Commit Graph

460 Commits

Author SHA1 Message Date
Kay Sievers
7eff2e7a8b Driver core: change add_uevent_var to use a struct
This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.

Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 14:51:01 -07:00
Stephen Hemminger
3b04ddde02 [NET]: Move hardware header operations out of netdevice.
Since hardware header operations are part of the protocol class
not the device instance, make them into a separate object and
save memory.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:52:52 -07:00
Stephen Hemminger
b95cce3576 [NET]: Wrap hard_header_parse
Wrap the hard_header_parse function to simplify next step of
header_ops conversion.

Signed-off-by: Stephen Hemminger <shemminger@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:52:51 -07:00
Ralf Baechle
10d024c1b2 [NET]: Nuke SET_MODULE_OWNER macro.
It's been a useless no-op for long enough in 2.6 so I figured it's time to
remove it.  The number of people that could object because they're
maintaining unified 2.4 and 2.6 drivers is probably rather small.

[ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ]

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-10-10 16:51:13 -07:00
Stefan Richter
be7963b7e7 ieee1394: ohci1394: fix initialization if built non-modular
Initialization of ohci1394 was broken according to one reporter if the
driver was statically linked, i.e. not built as loadable module.  Dmesg:

  PCI: Device 0000:02:07.0 not available because of resource collisions
  ohci1394: Failed to enable OHCI hardware.

This was reported for a Toshiba Satellite 5100-503.  The cause is commit
8df4083c52 in Linux 2.6.19-rc1 which only
served purposes of early remote debugging via FireWire.  This
functionality is better provided by the currently out-of-tree driver
ohci1394_earlyinit.  Reversal of the commit was OK'd by Andi Kleen.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-09-20 21:19:45 +02:00
Stefan Richter
a2ee3f9bbb ieee1394: sbp2: fix sbp2_remove_device for error cases
Bug found by Olaf Hering <olh@suse.de>:
sbp2util_remove_command_orb_pool requires a valid lu->hi pointer.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-08-25 18:00:26 +02:00
Stefan Richter
e4f8cac5e0 ieee1394: sbp2: more correct Kconfig dependencies
Make the option SBP2_PHYS_DMA available on all architectures where it
compiles.  This includes x86-64 where I runtime-tested it successfully.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-08-02 20:34:16 +02:00
Stefan Richter
a9c2f18800 ieee1394: revert "sbp2: enforce 32bit DMA mapping"
Revert commit 0555659d63 from 2.6.22-rc1.
The dma_set_mask call somehow failed on a PowerMac G5, PPC64:
http://lkml.org/lkml/2007/8/1/344

Should there ever occur a DMA mapping beyond the physical DMA range, a
proper SBP-2 firmware will report transport errors.  So let's leave it
at that.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Tested-by: Olaf Hering <olh@suse.de>
2007-08-02 20:34:16 +02:00
Al Viro
5b26e64ea3 raw1394 __user annotation
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-26 11:11:57 -07:00
Paul Mundt
20c2df83d2 mm: Remove slab destructors from kmem_cache_create().
Slab destructors were no longer supported after Christoph's
c59def9f22 change. They've been
BUGs for both slab and slub, and slob never supported them
either.

This rips out support for the dtor pointer from kmem_cache_create()
completely and fixes up every single callsite in the kernel (there were
about 224, not including the slab allocator definitions themselves,
or the documentation references).

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-20 10:11:58 +09:00
Rafael J. Wysocki
8314418629 Freezer: make kernel threads nonfreezable by default
Currently, the freezer treats all tasks as freezable, except for the kernel
threads that explicitly set the PF_NOFREEZE flag for themselves.  This
approach is problematic, since it requires every kernel thread to either
set PF_NOFREEZE explicitly, or call try_to_freeze(), even if it doesn't
care for the freezing of tasks at all.

It seems better to only require the kernel threads that want to or need to
be frozen to use some freezer-related code and to remove any
freezer-related code from the other (nonfreezable) kernel threads, which is
done in this patch.

The patch causes all kernel threads to be nonfreezable by default (ie.  to
have PF_NOFREEZE set by default) and introduces the set_freezable()
function that should be called by the freezable kernel threads in order to
unset PF_NOFREEZE.  It also makes all of the currently freezable kernel
threads call set_freezable(), so it shouldn't cause any (intentional)
change of behaviour to appear.  Additionally, it updates documentation to
describe the freezing of tasks more accurately.

[akpm@linux-foundation.org: build fixes]
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Acked-by: Nigel Cunningham <nigel@nigel.suspend2.net>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Gautham R Shenoy <ego@in.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17 10:23:02 -07:00
Linus Torvalds
bc06cffdec Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (166 commits)
  [SCSI] ibmvscsi: convert to use the data buffer accessors
  [SCSI] dc395x: convert to use the data buffer accessors
  [SCSI] ncr53c8xx: convert to use the data buffer accessors
  [SCSI] sym53c8xx: convert to use the data buffer accessors
  [SCSI] ppa: coding police and printk levels
  [SCSI] aic7xxx_old: remove redundant GFP_ATOMIC from kmalloc
  [SCSI] i2o: remove redundant GFP_ATOMIC from kmalloc from device.c
  [SCSI] remove the dead CYBERSTORMIII_SCSI option
  [SCSI] don't build scsi_dma_{map,unmap} for !HAS_DMA
  [SCSI] Clean up scsi_add_lun a bit
  [SCSI] 53c700: Remove printk, which triggers because of low scsi clock on SNI RMs
  [SCSI] sni_53c710: Cleanup
  [SCSI] qla4xxx: Fix underrun/overrun conditions
  [SCSI] megaraid_mbox: use mutex instead of semaphore
  [SCSI] aacraid: add 51245, 51645 and 52245 adapters to documentation.
  [SCSI] qla2xxx: update version to 8.02.00-k1.
  [SCSI] qla2xxx: add support for NPIV
  [SCSI] stex: use resid for xfer len information
  [SCSI] Add Brownie 1200U3P to blacklist
  [SCSI] scsi.c: convert to use the data buffer accessors
  ...
2007-07-15 16:51:54 -07:00
Al Viro
51ec138c64 ieee1394: forgotten dereference...
Going through the string and waiting for _pointer_ to become '\0'
is not what the authors meant...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Acked-by: Ben Collins <ben.collins@ubuntu.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-15 16:40:51 -07:00
Stefan Richter
53c96b4174 ieee1394: remove old isochronous ABI
Based on patch "the scheduled removal of RAW1394_REQ_ISO_{SEND,LISTEN}"
from Adrian Bunk, November 20 2006.

This patch also removes the underlying facilities in ohci1394 and
disables them in pcilynx.  That is, hpsb_host_driver.devctl() and
hpsb_host_driver.transmit_packet() are no longer used for iso reception
and transmission.

Since video1394 and dv1394 only work with ohci1394 and raw1394's rawiso
interface has never been implemented in pcilynx, pcilynx is now no
longer useful for isochronous applications.

raw1394 will still handle the request types but will complete the
requests with errors that indicate API version conflicts.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:41 +02:00
Stefan Richter
77bba7aea7 ieee1394: sbp2: change some module parameters from int to bool
This is upwards compatible, except that integer values other than 0 or 1
are no longer accepted.  But values like "Y", "N", "no", "nnoooh!" work
now.

Also, improve a comment on the serialize_io parameter and make the
ORB_SET_EXCLUSIVE macro ultra-safe.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:41 +02:00
Stefan Richter
93f2e0259a ieee1394: first minimal NUMA awareness
Association of a host device with a node on NUMA machines optimizes
allocations of skbs given from the networking stack to eth1394.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:40 +02:00
Stefan Richter
8e4dc400b7 ieee1394: eth1394: revert parent device to that in 2.6.20
After ieee1394 was converted away from class_device like the networking
subsystem was already in 2.6.21, eth1394's device may point to the
fw-host device as its parent again like in 2.6.20.

This affects userspace tools which examine the sysfs representation of
eth1394's device.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:40 +02:00
Stefan Richter
a0e857eeff ieee1394: nodemgr: parallelize between several hosts
Remove the global nodemgr_serialize mutex which enclosed most of the
host thread event loop.  This allows for parallelism between several
host adapter cards.

Properly serialize the driver hooks .update(), .suspend(), .resume(),
and .remove() by means of device->sem.  These hooks can be called from
outside the host threads' contexts.

Get() and put() the device.driver when calling its hooks.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:39 +02:00
Kay Sievers
dd7f2928d8 ieee1394: convert ieee1394 from "struct class_device" to "struct device"
Here is a straightforward conversion to "struct device". The "struct
class_device" will be removed from the kernel.

It seems to work fine for me with and without CONFIG_SYSFS_DEPRECATED
set.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:39 +02:00
Stefan Richter
59337087cb ieee1394: raw1394: fix a 32/64-bits compat fix
I was told that only i386 aligns 64 bit integers at 4 bytes boundaries
while all other architectures (32 bit architectures with 64 bit
siblings) align it on 8 bytes boundaries.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:39 +02:00
Stefan Richter
19f00e66f8 ieee1394: raw1394: Add ioctl() for 32bit userland on 64bit kernel, amendment
Pointed out by Arnd Bergmann:  PPC32 aligns this at 64bit, IA32 packs
it.  A kernel-wide available __compat_u64 which is 4-byte aligned on
AMD64 and IA64 would be nicer though.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:38 +02:00
Petr Vandrovec
650c12c528 ieee1394: raw1394: Add ioctl() for 32bit userland on 64bit kernel
Add compat_ioctl.  Although all structures are more or less same,
raw1394_iso_packets got pointer inside, and raw1394_cycle_timer got unwanted
padding in the middle.  I did not add any translation for ioctls passing array
of integers around as integers seem to have same size (32 bits) on all
architectures supported by Linux.

Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Acked-by: Dan Dennedy <dan@dennedy.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (split into 3 patches)
2007-07-10 00:07:38 +02:00
Petr Vandrovec
883b97eaf2 ieee1394: raw1394: Fix write() for 32bit userland on 64bit kernel
* write(fd, buf, 52) from 32bit app was returning 56.  Most of callers did not
  care, but some (arm registration) did, and anyway it looks bad if request for
  writing 52 bytes returns 56.  And returning sizeof anything in 'int' is not
  good as well.  So all functions now return '0' instead of
  sizeof(struct raw1394_request) on success, and write() itself provides correct
  return value (it just returns value it was asked to write on success as raw1394
  does not do any partial writes at all).

* Related to this was problem that write() could have returned 0 when kernel
  state would become corrupted and moved to different state than
  opened/initialized/connected.  Now it returns -EBADFD which seemed appropriate.

Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Acked-by: Dan Dennedy <dan@dennedy.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (split into 3 patches)
2007-07-10 00:07:37 +02:00
Petr Vandrovec
ee9be42596 ieee1394: raw1394: Fix read() for 32bit userland on 64bit kernel
read() always failed with -EFAULT.  This was happening due to
raw1394_compat_read copying data to wrong location - access_ok always
failed as 'r' is kernel address, not user.  Whole function just tried to
copy data from 'r' to 'r', which is not good.

Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Acked-by: Dan Dennedy <dan@dennedy.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (split into 3 patches)
2007-07-10 00:07:37 +02:00
Stefan Richter
6552731a05 ieee1394: add comments in struct hpsb_packet
to clarify who is supposed to set what

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:36 +02:00
Stefan Richter
17a624869e ieee1394: ohci1394: remove dead CONFIG variable
spotted by Robert P. J. Day <rpjday@mindspring.com>

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-07-10 00:07:36 +02:00
Carlos E. Ugarte
18b461796b ieee1394: fix to ether1394_tx in ether1394.c
This patch fixes a problem that occurs when packets cannot be sent across
the ieee1394 bus and we return NETDEV_TX_BUSY in the net driver "hard start
xmit" routine ether1394_tx. When we return NETDEV_TX_BUSY the stack will
call ether1394_tx again with the same skb. So we need to restore the header
to look like it did before we munged it for xmit over ieee1394.

[Stefan Richter: changed whitespace, deleted a local variable]

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-06-16 12:43:20 +02:00
Stefan Richter
d7794c8668 ieee1394: sbp2: offer SAM-conforming target port ID in sysfs
With "modprobe sbp2 long_ieee1394_id=y", the format of
/sys/bus/scsi/devices/*:*:*:*/ieee1394_id is changed from e.g.
0001041010004beb:0:0 to 0001041010004beb:00042c:0000.

The longer format fully conforms to object identifier sizes as per
SAM(-2...4) and reflects what the SAM target port identifier is meant to
contain:  A Discovery ID allegedly specified by ISO/IEC 13213:1994 ---
however there is no such thing; the authors of SAM probably meant
Directory ID).  Especially target nodes with multiple dynamically added
targets may use Directory IDs to persistently identify target ports.

The new format is independent of implementation details of nodemgr.
Thus the same ieee1394_id attribute format can be implemented in the new
firewire stack.

The ieee1394_id is typically used to create persistently named links in
/dev/disk/by-id.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-05-31 21:40:13 +02:00
Stefan Richter
a52938f3e2 ieee1394: fix calculation of sysfs attribute "address"
struct csr1212_keyval.offset is relative to 0xffff f000 0000 rather than
0xffff f000 0400.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-05-31 21:40:13 +02:00
James Bottomley
5bc65793cb [SCSI] Merge up to linux-2.6 head
Conflicts:

	drivers/scsi/jazz_esp.c

Same changes made by both SCSI and SPARC trees: problem with UTF-8
conversion in the copyright.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-30 23:57:05 -05:00
Petr Vandrovec
976da96a5d ieee1394: raw1394: Fix async send
While playing with libiec61883 I've noticed that async_send is broken
because it was doing copy_from_user(...., packet->data_size) before
packet->data_size was set to any useful value.  It got broken when
packet->allocated_data_size got introduced, as hpsb_alloc_packet does
not set packet->data_size anymore.  (Regression in 2.6.22-rc1)

Signed-off-by: Petr Vandrovec <petr@vandrovec.name>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-05-27 23:21:00 +02:00
Stefan Richter
ef50a6c59d ieee1394: eth1394: bring back a parent device
This adds a real parent device to eth1394's ethX device like in Linux
2.6.20 and older.  However, due to unfinished conversion of the ieee1394
away from class_device, we now refer to the FireWire controller's PCI
device as the parent, not to the ieee1394 driver's fw-host device.

Having a real parent device instead of a virtual one allows udev scripts
to distinguish eth1394 interfaces from networking bridges, bondings and
the likes.

Fixes a regression since 2.6.21:
https://bugs.gentoo.org/show_bug.cgi?id=177199

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-05-27 23:20:59 +02:00
Stefan Richter
7a97bc03e0 ieee1394: eth1394: handle tlabel exhaustion
When eth1394 was unable to acquire a transaction label, it just dropped
outgoing packets without attempt to resend them later.

The transmit queue is now halted if no tlabel is available to
->hard_start_xmit().  A workqueue job is then scheduled to catch the
moment when ieee1394 recycled the next lot of tlabels.

Fixes http://bugzilla.kernel.org/show_bug.cgi?id=8402

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-05-27 23:20:59 +02:00
Stefan Richter
69c29fa7d1 ieee1394: eth1394: remove bogus netif_wake_queue
When we are within hard_start_xmit, the queue is already awake.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-05-27 23:20:58 +02:00
Stefan Richter
20e2008e1f ieee1394: sbp2: include workqueue.h
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-05-27 23:20:58 +02:00
FUJITA Tomonori
d7dea2cf80 [SCSI] sbp2: convert to use the data buffer accessors
- remove the unnecessary map_single path.

- convert to use the new accessors for the sg lists and the
parameters.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2007-05-27 13:10:08 -05:00
Linus Torvalds
9b6a51746f Merge branch 'juju' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6
* 'juju' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6: (138 commits)
  firewire: Convert OHCI driver to use standard goto unwinding for error handling.
  firewire: Always use parens with sizeof.
  firewire: Drop single buffer request support.
  firewire: Add a comment to describe why we split the sg list.
  firewire: Return SCSI_MLQUEUE_HOST_BUSY for out of memory cases in queuecommand.
  firewire: Handle the last few DMA mapping error cases.
  firewire: Allocate scsi_host up front and allocate the sbp2_device as hostdata.
  firewire: Provide module aliase for backwards compatibility.
  firewire: Add to fw-core-y instead of assigning fw-core-objs in Makefile.
  firewire: Break out shared IEEE1394 constant to separate header file.
  firewire: Use linux/*.h instead of asm/*.h header files.
  firewire: Uppercase most macro names.
  firewire: Coding style cleanup: no spaces after function names.
  firewire: Convert card_rwsem to a regular mutex.
  firewire: Clean up comment style.
  firewire: Use lib/ implementation of CRC ITU-T.
  CRC ITU-T V.41
  firewire: Rename fw-device-cdev.c to fw-cdev.c and move header to include/linux.
  firewire: Future proof the iso ioctls by adding a handle for the iso context.
  firewire: Add read/write and size annotations to IOC numbers.
  ...

Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-10 13:30:08 -07:00
Martin Schwidefsky
eeca7a36a8 [S390] Kconfig: refine depends statements.
Refine some depends statements to limit their visibility to the
environments that are actually supported.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2007-05-10 15:46:07 +02:00
Michael Opdenacker
59c51591a0 Fix occurrences of "the the "
Signed-off-by: Michael Opdenacker <michael@free-electrons.com>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-09 08:57:56 +02:00
Randy Dunlap
e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Jean Delvare
6473d160b4 PCI: Cleanup the includes of <linux/pci.h>
I noticed that many source files include <linux/pci.h> while they do
not appear to need it. Here is an attempt to clean it all up.

In order to find all possibly affected files, I searched for all
files including <linux/pci.h> but without any other occurence of "pci"
or "PCI". I removed the include statement from all of these, then I
compiled an allmodconfig kernel on both i386 and x86_64 and fixed the
false positives manually.

My tests covered 66% of the affected files, so there could be false
positives remaining. Untested files are:

arch/alpha/kernel/err_common.c
arch/alpha/kernel/err_ev6.c
arch/alpha/kernel/err_ev7.c
arch/ia64/sn/kernel/huberror.c
arch/ia64/sn/kernel/xpnet.c
arch/m68knommu/kernel/dma.c
arch/mips/lib/iomap.c
arch/powerpc/platforms/pseries/ras.c
arch/ppc/8260_io/enet.c
arch/ppc/8260_io/fcc_enet.c
arch/ppc/8xx_io/enet.c
arch/ppc/syslib/ppc4xx_sgdma.c
arch/sh64/mach-cayman/iomap.c
arch/xtensa/kernel/xtensa_ksyms.c
arch/xtensa/platform-iss/setup.c
drivers/i2c/busses/i2c-at91.c
drivers/i2c/busses/i2c-mpc.c
drivers/media/video/saa711x.c
drivers/misc/hdpuftrs/hdpu_cpustate.c
drivers/misc/hdpuftrs/hdpu_nexus.c
drivers/net/au1000_eth.c
drivers/net/fec_8xx/fec_main.c
drivers/net/fec_8xx/fec_mii.c
drivers/net/fs_enet/fs_enet-main.c
drivers/net/fs_enet/mac-fcc.c
drivers/net/fs_enet/mac-fec.c
drivers/net/fs_enet/mac-scc.c
drivers/net/fs_enet/mii-bitbang.c
drivers/net/fs_enet/mii-fec.c
drivers/net/ibm_emac/ibm_emac_core.c
drivers/net/lasi_82596.c
drivers/parisc/hppb.c
drivers/sbus/sbus.c
drivers/video/g364fb.c
drivers/video/platinumfb.c
drivers/video/stifb.c
drivers/video/valkyriefb.c
include/asm-arm/arch-ixp4xx/dma.h
sound/oss/au1550_ac97.c

I would welcome test reports for these files. I am fine with removing
the untested files from the patch if the general opinion is that these
changes aren't safe. The tested part would still be nice to have.

Note that this patch depends on another header fixup patch I submitted
to LKML yesterday:
  [PATCH] scatterlist.h needs types.h
  http://lkml.org/lkml/2007/3/01/141

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Badari Pulavarty <pbadari@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-05-02 19:02:35 -07:00
Stefan Richter
bcfd09ee48 ieee1394: remove garbage from Kconfig
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:33 +02:00
Stefan Richter
3f94aa4d69 ieee1394: more help in Kconfig
- s/Device Drivers/Controllers/
  - clarify who needs pcilynx
  - don't recommend Y for raw1394; M is typically used

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:33 +02:00
Simon Arlott
749cf76620 ieee1394: ohci1394: Fix mistake in printk message.
Fix the "attempting to setting" message in ohci1394.

Signed-off-by: Simon Arlott <simon@fire.lp0.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Bernhard Kauer
2ab7752469 ieee1394: ohci1394: remove unnecessary rcvPhyPkt bit flipping in LinkControl register
Remove the unneeded code that clears, sets and again clears the
rcvPhyPkt bit in the ohci1394 LinkControl register in ohci_initialize().

Signed-off-by: Bernhard Kauer <kauer@os.inf.tu-dresden.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Stefan Richter
c13596b0e5 ieee1394: ohci1394: fix cosmetic problem in error logging
If posted write failed, an "Unhandled interrupt(s) 0x00000100" message
was logged by mistake.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Stefan Richter
21b2c5647b ieee1394: eth1394: send async streams at S100 on 1394b buses
eth1394 did not work on buses consisting of S100B...S400B hardware
because it attempted to send GASP packets at S800.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Akinobu Mita
809e905ce7 ieee1394: eth1394: fix error path in module_init
This patch fixes some error handlings in eth1394:

- check return value of kmem_cache_create()
- cleanup resources if hpsb_register_protocol() fails

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (whitespace)
2007-04-30 00:00:32 +02:00
Stefan Richter
fdc0092bfd ieee1394: eth1394: correct return codes in hard_start_xmit
This patch actually doesn't change anything because there was always 0
== NETDEV_TX_OK returned before.

TODO: Return NETDEV_TX_BUSY in error case and test in different error
conditions.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Stefan Richter
53f374e76c ieee1394: eth1394: hard_start_xmit is called in atomic context
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Stefan Richter
099398719b ieee1394: eth1394: some conditions are unlikely
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:32 +02:00
Stefan Richter
2e2173df68 ieee1394: eth1394: clean up fragment_overlap
offset > fi->offset + fi->len - 1  ==  !(offset < fi->offset + fi->len)
offset + len - 1 < fi->offset      ==  !(offset + len > fi->offset)
!(A || B)  ==  (!A && !B)

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
01590d20b4 ieee1394: eth1394: don't use alloc_etherdev
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
8a62bf7978 ieee1394: eth1394: omit useless set_mac_address callback
We can't reconfigure the MAC address, hence we don't need the callback.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
599bba9647 ieee1394: eth1394: CONFIG_INET is always defined
because CONFIG_IEEE1394_ETH1394 depends on it.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
17bab407d5 ieee1394: eth1394: allow MTU bigger than 1500
RFC 2734 says: "IP-capable nodes may operate with an MTU size larger
than the default [1500 octets], but the means by which a larger MTU is
configured are beyond the scope of this document."

Allow users to set an MTU bigger than 1500.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Adrian Bunk
f982e5ffcf ieee1394: unexport highlevel_host_reset
highlevel_host_reset no longer has any modular users.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
246a5fdade ieee1394: eth1394: contain host reset
Call only eth1394's own host reset handler from .tx_timeout, not the
reset hooks of all other IEEE 1394 drivers.

A minor drawback of this patch is that ether1394_host_reset by timeout
is not serialized against ether1394_host_reset by bus reset.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
5009d26961 ieee1394: eth1394: shorter error messages
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
027611b842 ieee1394: eth1394: correct a memset argument
The old argument calculated the correct value in a wrong way.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
d06c1ddad9 ieee1394: eth1394: refactor .probe and .update
Move common code into an extra function.  This implicitly adds a missing
node_info->fifo = CSR1212_INVALID_ADDR_SPACE; to .update.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:31 +02:00
Stefan Richter
5e7abccd38 ieee1394: eth1394: .probe and .update may sleep
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
efbeccf174 ieee1394: eth1394: coding style
Adjust white space and line wraps.  Remove unnecessary parentheses and
braces, unused macros, and some of the more redundant comments.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Jean Delvare
09d7a96f5a ieee1394: eth1394: Move common recv_init code to helper function
There is some common code between ether1394_open and ether1394_add_host
which can be moved to a separate helper function for a slightly smaller
eth1394 driver (-160 bytes on i386.)

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
70093cfde8 ieee1394: eth1394: don't autoload by hotplug when ohci1394 starts
Until now, ieee1394 put an IP-over-1394 capability entry into each new
host's config ROM.  As soon as the controller was initialized --- i.e.
right after modprobe ohci1394 --- this entry triggered a hotplug event
which typically caused auto-loading of eth1394.

This irritated or annoyed many users and distributors.  Of course they
could blacklist eth1394, but then ieee1394 wrongly advertized IP-over-
1394 capability to the FireWire bus.

Therefore
  - remove the offending kernel config option
    IEEE1394_CONFIG_ROM_IP1394,
  - let eth1394 add the ROM entry by itself, i.e. only after eth1394 was
    loaded.

This fixes http://bugzilla.kernel.org/show_bug.cgi?id=7793 .

To emulate the behaviour of older kernels, simply add the following to
to /etc/modprobe.conf:

install ohci1394 /sbin/modprobe eth1394; \
                 /sbin/modprobe --ignore-install ohci1394

Note, autoloading of eth1394 when an _external_ IP-over-1394 capable
device is discovered is _not_ affected by this patch.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
e00f04a70f ieee1394: eth1394: reduce excessive function inlining
Shrinks eth1394.ko by about 5%.

Many of these functions have only one caller and are therefore auto-
inlined anyway.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
2cd556ae61 ieee1394: eth1394: clean up host removal
ether1394_add_host() guarantees that hi->dev != NULL if hi != NULL.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
157188cb54 ieee1394: eth1394: unregister address space in failure case
Warn if hpsb_allocate_and_register_addrspace() failed.
Unregister the address space if something else failed.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
ea9057ad62 ieee1394: send async streams at S100
The comment says it all.  This affects only asynchronous streams sent
via raw1394; the eth1394 driver has own code and needs an own fix.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Milind Arun Choudhary
df18ce85de ieee1394: SPIN_LOCK_UNLOCKED cleanup
SPIN_LOCK_UNLOCKED cleanup,use DEFINE_SPINLOCK instead

Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
9be51c5d78 ieee1394: nodemgr: unify some error messages
Shrinks object file size a little bit.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:30 +02:00
Stefan Richter
9324547235 ieee1394: nodemgr: less noise in dmesg
Everytime when eth1394 or a libraw1394 client updates the configuration
ROM, a certain sysfs attribute cannot be added since it already exists.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
d4c60085a9 ieee1394: unroll a weird macro
This is a coding style touch-up for ieee1394's handle_incoming_packet().

A preprocessor macro contained hardwired variable names and, even worse,
the 'break' keyword.  This macro is now unrolled and removed.

Also, all 'break's which had the effect of a return are replaced by
return.  And a FIXME comment is brought up to date.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Andrew Morton
b9e5eb067b ieee1394: iso.c needs sched.h
alpha:

drivers/ieee1394/iso.c: In function 'hpsb_iso_xmit_sync':
drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct'
drivers/ieee1394/iso.c:440: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/ieee1394/iso.c:440: error: (Each undeclared identifier is reported only once
drivers/ieee1394/iso.c:440: error: for each function it appears in.)
drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'signal_pending'
drivers/ieee1394/iso.c:440: error: invalid use of undefined type 'struct task_struct'
drivers/ieee1394/iso.c:440: warning: implicit declaration of function 'schedule'
drivers/ieee1394/iso.c: In function 'hpsb_iso_wake':
drivers/ieee1394/iso.c:562: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (brought into alphabetic order)
2007-04-30 00:00:29 +02:00
Stefan Richter
9543a931dc ieee1394: some more includes
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Torsten Kaiser
3a23a81e83 ieee1394: ieee1394_transactions needs sched.h
drivers/ieee1394/ieee1394_transactions.c fails for me if CONFIG_SMP=n

gcc complains:
  CC      drivers/ieee1394/ieee1394_transactions.o
drivers/ieee1394/ieee1394_transactions.c: In function 'hpsb_get_tlabel':
drivers/ieee1394/ieee1394_transactions.c:183: error:
'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/ieee1394/ieee1394_transactions.c:183: error: (Each undeclared
identifier is reported only once

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (added comment)
2007-04-30 00:00:29 +02:00
Randy Dunlap
504945c9c6 ieee1394: ieee1394_core printk format
Fix printk format string:
drivers/ieee1394/ieee1394_core.c:702: warning: format '%d' expects type 'int', but argument 2 has type 'size_t'

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
7542e0e696 ieee1394: remove usage of skb_queue as packet queue
This considerably reduces the memory requirements for a packet and
eliminates ieee1394's dependency on CONFIG_NET.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
d265250341 ieee1394: csr1212: log if devices have CRC errors in their ROM
This will point out firmware bugs.

I tested with 11 SBP-2 devices and one OS X PC and got these errors from
two old CD-RWs only.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
511f7b3227 ieee1394: csr1212: more sensible names for jump targets
Code beneath two labels called "fail" is actually also reached in case
of success.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
c94ccf9e33 ieee1394: csr1212: warn on unreachable code
We want bugs to show themselves.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:29 +02:00
Stefan Richter
a1c6250cb6 ieee1394: shrink csr1212_new_string_descriptor_leaf
Make unnecessarily generic code specific and thus simpler.
Shrink a lookup table from 128 to 16 bytes.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
c868ae2a1d ieee1394: csr1212: coding style
Whitespace, line breaks, braces...

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
fd2f3bddae ieee1394: replace vmalloc by kmalloc in csr1212
The biggest chunk ever allocated by CSR1212_MALLOC is 1024 Bytes +
sizeof(struct csr1212_csr_rom_cache) big.  Most of the time much
smaller data structures are allocated.  Therefore vmalloc is a waste.

The one exception is csr1212_append_new_cache() which is called to
append a chunk of CSR1212_EXTENDED_ROM_SIZE + sizeof(struct
csr1212_csr_rom_cache) if the currently allocated ROM cache is too
small.  CSR1212_EXTENDED_ROM_SIZE is generously defined as 256 kBytes.
In SVN commit 1220, Steve Kinneberg lowered this to 2 kBytes in the
config_rom_2.4 branch.  This same commit also switched CSR1212_MALLOC
from kmalloc to vmalloc in the SVN trunk branch:

> r1220 | kberg | 2004-05-31 01:51:44 +0200 (Mon, 31 May 2004) | 13 lines
>
> CSR1212 Extended ROM bug fixes:
> trunk line changes:
>   - Use vmalloc instead of kmalloc
>   - Change delayed_reset_bus() to operate in a work_queue instead of a
>     timer interrupt.
>   - Fix hpsb_allocate_and_register_addrspace() to not allocate space
>     on top of already allocated space.
>   - Fix problems in csr1212.c filling ConfigROM images when extend
>     ROMs are present.
> config-rom-2.4 changes:
>   - Changed extended rom allocation from 256K to 8K.
(It was actually 2 kB, not 8 kB.)
>   - Fix hpsb_allocate_and_register_addrspace() to not allocate space
>     on top of already allocated space.
>   - Fix problems in csr1212.c filling ConfigROM images when extend
>     ROMs are present.

I am now setting CSR1212_EXTENDED_ROM_SIZE to 2 kB minus the overhead of
struct csr1212_csr_rom_cache.  Note, this code path is not used by the
in-kernel drivers though.  raw1394 could trigger it, but the respective
libraw1394 functions don't exist yet.

Furthermore, userspace programs can replace the entire local ROM via
raw1394.  If kmalloc does not fulfill their needs --- well, tough luck.
I decree that nobody needs such huge extended ROMs.  (Extended ROMs are
defined by IEEE 1212 clause 7.7.18.  The spec does not impose
practically relevant restrictions on the size of extended ROM chunks.)

Another potentially demanding use of CSR1212_MALLOC is if external
FireWire devices come with Extended ROM entries.  If they are too big
for kmalloc (or have been too big for vmalloc) we just fail to read
their ROM.  This is quite unlikely though, to my knowledge.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
c1a37f2c65 ieee1394: de-inline some functions
This small reorganization of public csr1212 functions saves one
exported symbol and a few bytes in the driver modules.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
64ff712321 ieee1394: stricter error checks in csr1212
return -EINVAL becomes BUG_ON in checks of function call parameters.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
982610bd0d ieee1394: csr1212: rename some types
Use u8, u32 etc. instead of u_int8_t, csr1212_quad_t etc.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
7fb9addba8 ieee1394: drop csr1212's support for external compilation
csr1212 was written to be compiled either as part of the ieee1394 kernel
driver or of an anticipated IEEE 1212 userspace library.  We now drop
support for the latter.  The costs in terms of code footprint and depth
of abstraction are not countered by any actual benefit.

Also remove some obsolete #includes.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
6c88e47566 ieee1394: remove unused csr1212 code
Delete unused code.
Make some extern functions static.
Remove superfluous inline keywords.
Move private definitions from csr1212.h to csr1212.c.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
e167c88ebb ieee1394: small header cleanup
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
afd6546d8d ieee1394: move some comments from declaration to definition
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:28 +02:00
Stefan Richter
ef8153348f ieee1394: remove declarations of nonexisting functions
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Andrew Morton
f84c922ba1 ieee1394: sbp2: include fixes
drivers/ieee1394/sbp2.c: In function 'sbp2util_access_timeout':
drivers/ieee1394/sbp2.c:399: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)
drivers/ieee1394/sbp2.c:399: error: (Each undeclared identifier is reported only once
drivers/ieee1394/sbp2.c:399: error: for each function it appears in.)
drivers/ieee1394/sbp2.c:399: warning: implicit declaration of function 'signal_pending'
drivers/ieee1394/sbp2.c:399: warning: implicit declaration of function 'schedule_timeout'
drivers/ieee1394/sbp2.c: In function 'sbp2_prep_command_orb_sg':
drivers/ieee1394/sbp2.c:1438: warning: implicit declaration of function 'page_address'
drivers/ieee1394/sbp2.c:1438: warning: passing argument 2 of 'dma_map_single' makes pointer from integer without a cast
drivers/ieee1394/sbp2.c: In function 'sbp2_handle_status_write':
drivers/ieee1394/sbp2.c:1842: error: 'TASK_INTERRUPTIBLE' undeclared (first use in this function)

Possibly due to changes in -mm, but this file should explicitly include the
headers for the stuff it uses.

Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (brought into alphabetic order)
2007-04-30 00:00:27 +02:00
Stefan Richter
3d269cb50c ieee1394: sbp2: move some memory allocations into non-atomic context
When the command ORB pool is created, the ORB list won't be accessed
concurrently.  Therefore we don't have to take the spinlock there.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Stefan Richter
2446a79f4f ieee1394: sbp2: optimize DMA direction of s/g tables
Unlike the name suggests, "cmd->scatter_gather_element" holds only the
s/g table, not the actual s/g elements.  Since the table is only read
but never written by the device, DMA_BIDIRECTIONAL can be replaced by
DMA_TO_DEVICE which may be cheaper on some architectures.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Stefan Richter
0555659d63 ieee1394: sbp2: enforce 32bit DMA mapping
In order to use OHCI-1394 physical DMA, all s/g elements, s/g tables,
ORBs, and response buffers have to reside within the first 4 GB of the
FireWire controller's physical address space.  Set the correct mask for
DMA mappings.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Stefan Richter
f412bf440b ieee1394: sbp2: remove unnecessary alignments of struct members
The members "dma_addr_t command_orb_dma" and "dma_addr_t sge_dma" of
sbp2.h::sbp2_command_info do not have to be aligned themselves --- only
the memory which they point to has to be.

The member "struct sbp2_command_orb command_orb" has to be aligned on
4 bytes boundary which is guaranteed because it contains u32 members.

The member "struct sbp2_unrestricted_page_table scatter_gather_element",
i.e. the SBP-2 s/g table, has to be aligned on 8 bytes boundary
according to the SBP-2 spec.  This is not a requirement for FireWire
controllers but could be expected by SBP-2 targets.

I see no need to align the members command_orb and
scatter_gather_element on CPU cacheline boundaries.  It could have
performance benefits, but on the other hand sbp2 has a somewhat wasteful
allocation scheme which should be optimized first before further tweaks
like cacheline alignments.  (E.g. don't always allocate SG_ALL s/g table
elements.)

Note, before as well as after the patch, the code relies on the
assumption that memory alignment in the virtual address space is
preserved in the physical address space after DMA mapping.

Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
2007-04-30 00:00:27 +02:00
Greg Kroah-Hartman
a2a0f74dc1 IEEE1394: remove rwsem use from ieee1394 core
The subsystem rwsem is not used by the driver core at all, so the use of
it in the ieee1394 code doesn't make any sense.  They might possibly
want to use a local lock, but as most of these operations are already
protected by a local lock, it really doesn't look like it would be
needed.

Cc: Ben Collins <bcollins@debian.org>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: linux1394-devel <linux1394-devel@lists.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:30 -07:00
Eric Rannaud
bf62456eb9 uevent: use add_uevent_var() instead of open coding it
Make use of add_uevent_var() instead of (often incorrectly) open coding it.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Eric Rannaud <eric.rannaud@gmail.com>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Arnaldo Carvalho de Melo
eddc9ec53b [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2007-04-25 22:25:10 -07:00