Commit Graph

132 Commits

Author SHA1 Message Date
Christian Krafft
4ff31d7757 [PATCH] ipmi: check, if default ports are accessible on PPC
ipmi_si_intf tries to access default ports, if no device could be found
elsewhere.  On PPC we have a function to check, if these legacy IO ports
are accessible.  This patch adds a check for these ports on PPC.  This
patch fixes a breakage of IPMI module on PPC machines without a BMC.

Signed-off-by: Christian Krafft <krafft@de.ibm.com>
Acked-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-05 07:57:53 -08:00
Eric W. Biederman
0b4d414714 [PATCH] sysctl: remove insert_at_head from register_sysctl
The semantic effect of insert_at_head is that it would allow new registered
sysctl entries to override existing sysctl entries of the same name.  Which is
pain for caching and the proc interface never implemented.

I have done an audit and discovered that none of the current users of
register_sysctl care as (excpet for directories) they do not register
duplicate sysctl entries.

So this patch simply removes the support for overriding existing entries in
the sys_sysctl interface since no one uses it or cares and it makes future
enhancments harder.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Acked-by: Ralf Baechle <ralf@linux-mips.org>
Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: David Howells <dhowells@redhat.com>
Cc: "Luck, Tony" <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Andi Kleen <ak@muc.de>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Corey Minyard <minyard@acm.org>
Cc: Neil Brown <neilb@suse.de>
Cc: "John W. Linville" <linville@tuxdriver.com>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jan Kara <jack@ucw.cz>
Cc: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: Mark Fasheh <mark.fasheh@oracle.com>
Cc: David Chinner <dgc@sgi.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Patrick McHardy <kaber@trash.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:59 -08:00
Eric W. Biederman
bfe1a1e160 [PATCH] sysctl: ipmi: remove unnecessary insert_at_head flag
With unique sysctl binary numbers setting insert_at_head is pointless.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Cc: Corey Minyard <minyard@acm.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:56 -08:00
Tim Schmielau
cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00
Alexey Dobriyan
b653d081c1 [PATCH] proc: remove useless (and buggy) ->nlink settings
Bug: pnx8550 code creates directory but resets ->nlink to 1.

create_proc_entry() et al will correctly set ->nlink for you.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Jeff Dike <jdike@addtoit.com>
Cc: Corey Minyard <minyard@acm.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Kyle McMartin <kyle@mcmartin.ca>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:32 -08:00
Corey Minyard
78ba2faf71 [PATCH] IPMI: Fix some RCU problems
Fix some RCU problem pointed out by Paul McKenney of IBM.  These are:

The wholesale move of the command receivers list into a new list was not
safe because the list will point to the new tail during a traversal, so the
traversal will never end on a reader if this happens during a read.

Memory barriers were needed to handle proper ordering of the setting of the
IPMI interface as valid.  Readers might not see proper ordering of data
otherwise.

In ipmi_smi_watcher_register(), the use of the _rcu suffix on the list is
unnecessary.

This require the list_splice_init_rcu() patch previously posted.

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-11 10:51:31 -08:00
Alexey Starikovskiy
15a58ed121 ACPICA: Remove duplicate table definitions (non-conflicting), cont
Signed-off-by: Len Brown <len.brown@intel.com>
2007-02-02 21:14:29 -05:00
David Barksdale
41c57a8718 [PATCH] IPMI: fix timeout list handling
Fix a dangling pointer bug in ipmi_timeout_handler.  A list of timedout
messages is not re-initialized before reuse, causing the head of the list
to point to freed memory.

Signed-off-by: David Barksdale <amatus@ocgnet.org>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-01-30 16:01:36 -08:00
Sebastien Dugué
43cdff92ad [PATCH] Fix IPMI watchdog set_param_str() using kstrdup
set_param_str() cannot use kstrdup() to duplicate the parameter.  That's
fine when the driver is compiled as a module but it sure is not when built
into the kernel as the kernel parameters are parsed before the kmalloc
slabs are setup.

Signed-off-by: Sebastien Dugué <sebastien.dugue@bull.net>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-30 10:55:54 -08:00
Corey Minyard
1d5636cc07 [PATCH] IPMI: misc fixes
Fix various problems pointed out by Andrew Morton and others:
  * platform_device_unregister checks for NULL, no need to check here.
  * Formatting fixes.
  * Remove big macro and convert to a function.
  * Use strcmp instead of defining a broken case-insensitive comparison,
    and make the output parameter info match the case of the input one
    (change "I/O" to "i/o").
  * Return the length instead of 0 from the hotmod parameter handler.
  * Remove some unused cruft.
  * The trydefaults parameter only has to do with scanning the "standard"
    addresses, don't check for that on ACPI.

Signed-off-by: Corey Minyard <cminyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-10 09:55:40 -08:00
Randy Dunlap
0c8204b380 [PATCH] IPMI: remove zero inits
Remove all =0 and =NULL from static initializers.  They are not needed and
removing them saves space in the object files.

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-10 09:55:40 -08:00
Josef Sipek
7808841442 [PATCH] struct path: convert ipmi
Signed-off-by: Josef Sipek <jsipek@fsl.cs.sunysb.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-08 08:28:46 -08:00
Randy Dunlap
1aa16eeacd [PATCH] IPMI: fix PROC_FS=n warnings
Fix build warnings for PROC_FS=n.

  drivers/char/ipmi/ipmi_poweroff.c:707: warning: label 'out_err' defined but not used

  drivers/char/ipmi/ipmi_msghandler.c:1774: warning: 'ipmb_file_read_proc' defined but not used
  drivers/char/ipmi/ipmi_msghandler.c:1790: warning: 'version_file_read_proc' defined but not used
  drivers/char/ipmi/ipmi_msghandler.c:1801: warning: 'stat_file_read_proc' defined but not used

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Cc: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:48 -08:00
Corey Minyard
5a1099baa8 [PATCH] IPMI: increase KCS message size
Increase the maximum message size a KCS interface supports to the maximum
message size the rest of the driver supports.  Some systems really support
messages this big.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Patrick Schoeller <Patrick.Schoeller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:48 -08:00
Corey Minyard
4d7cbac7c8 [PATCH] IPMI: Fix BT long busy
The IPMI BT subdriver has been patched to survive "long busy" timeouts seen
during firmware upgrades and resets.  The patch never returns the HOSED state,
synthesizes response messages with meaningful completion codes, and recovers
gracefully when the hardware finishes the long busy.  The subdriver now issues
a "Get BT Capabilities" command and properly uses those results.  More
informative completion codes are returned on error from transaction starts;
this logic was propogated to the KCS and SMIC subdrivers.  Finally, indent and
other style quirks were normalized.

Signed-off-by: Rocky Craig <rocky.craig@hp.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
168b35a7f6 [PATCH] IPMI: fix pci warning
Change pci_module_init() to the new interface, and check the return code to
avoid warnings and give the user useful information if this fails.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
7d8ba9669a [PATCH] IPMI: add pigeonpoint poweroff
X86 boards generally use ACPI for the power management interactions with the
BMC.  However, non-x86 boards need some help.  This patch adds the help for
the Motorola PigeonPoint-based IPMCs.

Signed-off-by: Joseph Barnett <jbarnett@motorola.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
b361e27bba [PATCH] IPMI: system interface hotplug
Add the ability to hot add and remove interfaces in the ipmi_si driver.  Any
users who have the device open will get errors if they try to send a message.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
15c62e10bb [PATCH] IPMI: add poll delay
Make sure to delay a little in the IPMI poll routine so we can pass in a
timeout time and thus time things out.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
55162fb165 [PATCH] IPMI: fix request events
When the IPMI message handler requested that the interface look for events,
the ipmi_si driver would request flags, see if the event buffer full flag was
set, then request events.  It's better to just send the request for events, as
it cuts one message out of the transaction if there happens to be events, and
it will fetch events even if the event buffer was not full.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
b9675136e2 [PATCH] IPMI: Add maintenance mode
Some commands and operations on a BMC can cause the BMC to "go away" for a
while.  This can cause the automatic flag processing and other things of that
nature to timeout and generate annoying logs, or possibly cause other bad
things to happen when in firmware update mode.

Add detection of those commands (cold reset, warm reset, and any firmware
command) and turns off automatic processing for 30 seconds.  It also add a
manual override either way.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
b2c03941b5 [PATCH] IPMI: Allow hot system interface remove
This modifies the IPMI driver so that a lower-level interface can be
dynamically removed while in use so it can support hot-removal of hardware.

It also adds the ability to specify and dynamically change the IPMI interface
the watchdog timer and the poweroff code use.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
759643b874 [PATCH] IPMI: pass sysfs name from lower level driver
Pass in the sysfs name from the lower-level IPMI driver, as the coming IPMI
serial driver will need that to link properly from the serial device sysfs
directory.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
bca0324d09 [PATCH] IPMI: remove interface number limits
Remove the arbitrary limit of number of IPMI interfaces.  This has been tested
with 8 interfaces.

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Carol Hebert <cah@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Corey Minyard
f0b55da0d2 [PATCH] IPMI: Fix device model name
Add the product id to the driver model platform device name, in addition to
the device id.  The IPMI spec does not require that individual BMCs in a
system have unique devices IDs, but it does require that the product id/device
id combination be unique.

This also removes a redundant check and cleans up error handling
when the sysfs registration fails.

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Carol Hebert <cah@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-12-07 08:39:47 -08:00
Zhang, Yanmin
b48f5457b4 [PATCH] ipmi: use platform_device_add() instead of platform_device_register() to register device allocated dynamically
I got below warning when running 2.6.19-rc5-mm1 on my ia64 machine.

WARNING at lib/kobject.c:172 kobject_init()

Call Trace:
 [<a0000001000137c0>] show_stack+0x40/0xa0
                                sp=e0000002ff9f7bc0 bsp=e0000002ff9f0d10
 [<a000000100013850>] dump_stack+0x30/0x60
                                sp=e0000002ff9f7d90 bsp=e0000002ff9f0cf8
 [<a000000100407bb0>] kobject_init+0x90/0x160
                                sp=e0000002ff9f7d90 bsp=e0000002ff9f0cd0
 [<a0000001005ae080>] device_initialize+0x40/0x1c0
                                sp=e0000002ff9f7da0 bsp=e0000002ff9f0cb0
 [<a0000001005b88c0>] platform_device_register+0x20/0x60
                                sp=e0000002ff9f7dd0 bsp=e0000002ff9f0c90
 [<a000000100592560>] try_smi_init+0xbc0/0x11e0
                                sp=e0000002ff9f7dd0 bsp=e0000002ff9f0c50
 [<a000000100594900>] init_ipmi_si+0xaa0/0x12e0
                                sp=e0000002ff9f7de0 bsp=e0000002ff9f0bd8
 [<a000000100009910>] init+0x350/0x780
                                sp=e0000002ff9f7e00 bsp=e0000002ff9f0ba8
 [<a000000100011d30>] kernel_thread_helper+0x30/0x60
                                sp=e0000002ff9f7e30 bsp=e0000002ff9f0b80
 [<a0000001000090c0>] start_kernel_thread+0x20/0x40
                                sp=e0000002ff9f7e30 bsp=e0000002ff9f0b80
WARNING at lib/kobject.c:172 kobject_init()

Call Trace:
 [<a0000001000137c0>] show_stack+0x40/0xa0
                                sp=e0000002ff9f7b40 bsp=e0000002ff9f0db0
 [<a000000100013850>] dump_stack+0x30/0x60
                                sp=e0000002ff9f7d10 bsp=e0000002ff9f0d98
 [<a000000100407bb0>] kobject_init+0x90/0x160
                                sp=e0000002ff9f7d10 bsp=e0000002ff9f0d70
 [<a0000001005ae080>] device_initialize+0x40/0x1c0
                                sp=e0000002ff9f7d20 bsp=e0000002ff9f0d50
 [<a0000001005b88c0>] platform_device_register+0x20/0x60
                                sp=e0000002ff9f7d50 bsp=e0000002ff9f0d30
 [<a00000010058ac00>] ipmi_register_smi+0xcc0/0x18e0
                                sp=e0000002ff9f7d50 bsp=e0000002ff9f0c90
 [<a000000100592600>] try_smi_init+0xc60/0x11e0
                                sp=e0000002ff9f7dd0 bsp=e0000002ff9f0c50
 [<a000000100594900>] init_ipmi_si+0xaa0/0x12e0
                                sp=e0000002ff9f7de0 bsp=e0000002ff9f0bd8
 [<a000000100009910>] init+0x350/0x780
                                sp=e0000002ff9f7e00 bsp=e0000002ff9f0ba8
 [<a000000100011d30>] kernel_thread_helper+0x30/0x60
                                sp=e0000002ff9f7e30 bsp=e0000002ff9f0b80
 [<a0000001000090c0>] start_kernel_thread+0x20/0x40
                                sp=e0000002ff9f7e30 bsp=e0000002ff9f0b80

The root cause is the device struct is initialized twice.

If the device is allocated dynamically by platform_device_alloc,
platform_device_alloc will initialize struct device, then,
platform_device_add should be used to register the device.

The difference between platform_device_register and platform_device_add is
platform_device_register will initiate the device while platform_device_add
won't.

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Cc: Corey Minyard <minyard@acm.org>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-16 11:43:37 -08:00
Corey Minyard
7947d2cc2c [PATCH] IPMI: Fix more && typos
Fix improper use of "&&" when "&" was intended.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-13 07:40:42 -08:00
Alexey Dobriyan
64d9fe6973 [PATCH] ipmi_si_intf.c: fix "&& 0xff" typos
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-08 18:29:24 -08:00
Corey Minyard
46d52b09fa [PATCH] IPMI: retry messages on certain error returns
Some more errors from the IPMI send message command are retryable, but are not
being retried by the IPMI code.  Make sure they get retried.

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Frederic Lelievre <Frederic.Lelievre@ca.kontron.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-08 18:29:24 -08:00
Corey Minyard
f3ce6a0ead [PATCH] IPMI: Clean up the waiting message queue properly on unload
A wrong function was being used to free a list; this fixes the problem.
Otherwise, an oops at unload time was possible.  But not likely, since you
can't have any users when you unload the modules and it is very hard to get
messages into this queue without users.

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Patrick Schoeller <Patrick.Schoeller@hp.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-08 18:29:24 -08:00
Yvan Seth
d13adb6046 [PATCH] ipmi_si_intf.c sets bad class_mask with PCI_DEVICE_CLASS
Taken from http://bugzilla.kernel.org/show_bug.cgi?id=7439

It looks like device registration in drivers/char/ipmi/ipmi_si_intf.c was
cleaned up and a small error was made when setting the class_mask.  The fix
is simple as the correct mask value is defined in the code but is not used.

Acked-by: Corey Minyard <minyard@acm.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-11-03 12:27:57 -08:00
Dave Jones
1cd441f998 [PATCH] ipmi: fix return codes in failure case
These returns should be negative, like the others in this function.

Signed-off-by: Dave Jones <davej@redhat.com>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-20 10:26:44 -07:00
Jeff Garzik
5e59393ec2 [PATCH] ipmi: handle sysfs errors
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Corey Minyard <cminyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-11 11:14:25 -07:00
David Howells
7d12e780e0 IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.

The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around.  On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).

Where appropriate, an arch may override the generic storage facility and do
something different with the variable.  On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.

Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions.  Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller.  A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.

I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.

This will affect all archs.  Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

	struct pt_regs *old_regs = set_irq_regs(regs);

And put the old one back at the end:

	set_irq_regs(old_regs);

Don't pass regs through to generic_handle_irq() or __do_IRQ().

In timer_interrupt(), this sort of change will be necessary:

	-	update_process_times(user_mode(regs));
	-	profile_tick(CPU_PROFILING, regs);
	+	update_process_times(user_mode(get_irq_regs()));
	+	profile_tick(CPU_PROFILING);

I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().

Some notes on the interrupt handling in the drivers:

 (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
     the input_dev struct.

 (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
     something different depending on whether it's been supplied with a regs
     pointer or not.

 (*) Various IRQ handler function pointers have been moved to type
     irq_handler_t.

Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-10-05 15:10:12 +01:00
Corey Minyard
a51f4a81e7 [PATCH] IPMI: allow user to override the kernel IPMI daemon enable
After the previous patch to disable the kernel IPMI daemon if interrupts
were available, the issue of broken hardware was raised, and a reasonable
request to add an override was mode.  So here it is.

Allow the user to force the kernel ipmi daemon on or off.  This way,
hardware with broken interrupts or users that are not concerned with
performance can turn it on or off to their liking.

[akpm@osdl.org: save 4 bytes in vmlinux]
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03 08:03:42 -07:00
Jeff Garzik
397f4ebf4f [PATCH] ipmi: fix uninitialized data bug
gcc issues the following warning:

drivers/char/ipmi/ipmi_si_intf.c: In function ‘init_ipmi_si’:
drivers/char/ipmi/ipmi_si_intf.c:1729: warning: ‘data.irq’ may be used uninitialized in this function

This is indeed a bug.  data.irq is completely uninitialized in some code
paths.  Worse than that, data from a previous decode_dmi() run can easily
leak through successive calls.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-03 08:03:41 -07:00
Corey Minyard
df3fe8defe [PATCH] ipmi: don't start kipmid if the IPMI driver can use interrupts
If the driver has interrupts available to it, there is really no reason to
have a kernel daemon push the IPMI state machine.

Note that I have experienced machines where the interrupts do not work
correctly.  This was a long time ago and hopefully things are better now.
If some machines still have broken interrupts, a blacklist will need to be
added.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:26 -07:00
Corey Minyard
c69c31270c [PATCH] IPMI: per-channel command registration
This patch adds the ability to register for a command per-channel in the
IPMI driver.

If your BMC supports multiple channels, incoming messages can be useful to
have the ability to register to receive commands on a specific channel
instead the current behaviour of all channels.

Signed-off-by: David Barksdale <amatus@ocgnet.org>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-01 00:39:23 -07:00
Corey Minyard
4064d5ef26 [PATCH] IPMI: fix handling of OEM flags
If one of the OEM flags becomes set in the flags from the hardware, the
driver could hang if no OEM handler was set.  Fix the code to handle this.
This was tested by setting the flags by hand after they were fetched.

Signed-off-by: Corey Minyard <minyard@acm.org>
Ackde-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16 12:54:31 -07:00
Arnaud Patard
55ebcc38a5 [PATCH] IPMI: Fix oops on ipmi_msghandler removal for non ipmi systems
When the ipmi_si module is loaded on a system without any ipmi device, it
fails with nodev.  It would be fine if all resources were freed.  A call to
device_unregister() is missing, resulting to a oops when you remove the
ipmi_msghandler.

Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-16 12:54:30 -07:00
Corey Minyard
a9eec55623 [PATCH] IPMI: fix occasional oops on module unload
Olaf Kirch of SuSE tracked down a problem where module unloads of the IPMI
driver would occasionally result in Oopses.  He tracked that down to a
variable that wasn't always initialized properly in some situations.  This
patch initializes that variable.  Olaf sent a patch that kzalloc-ed the
data, but this structure is large enough that I would perfer to not do
that.  Thanks Olaf!

Signed-off-by: Corey Minyard <minyard@acm.org>
Cc: Olaf Kirch <okir@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-09-01 11:39:09 -07:00
Arjan van de Ven
62322d2554 [PATCH] make more file_operation structs static
Mark the static struct file_operations in drivers/char as const.  Making
them const prevents accidental bugs, and moves them to the .rodata section
so that they no longer do any false sharing; in addition with the proper
debug option they are then protected against corruption..

[akpm@osdl.org: build fix]
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-03 15:26:59 -07:00
Thomas Gleixner
0f2ed4c6ba [PATCH] irq-flags: drivers/char: Use the new IRQF_ constants
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-07-02 13:58:49 -07:00
Jörn Engel
6ab3d5624e Remove obsolete #include <linux/config.h>
Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>
2006-06-30 19:25:36 +02:00
Linus Torvalds
602cada851 Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)
  [PATCH] devfs: Remove it from the feature_removal.txt file
  [PATCH] devfs: Last little devfs cleanups throughout the kernel tree.
  [PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV
  [PATCH] devfs: Remove the tty_driver devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the line_driver devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed
  [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
  [PATCH] devfs: Remove devfs_remove() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree
  [PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
  [PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree
  [PATCH] devfs: Remove devfs support from the sound subsystem
  [PATCH] devfs: Remove devfs support from the ide subsystem.
  [PATCH] devfs: Remove devfs support from the serial subsystem
  [PATCH] devfs: Remove devfs from the init code
  [PATCH] devfs: Remove devfs from the partition code
  ...
2006-06-29 14:19:21 -07:00
Corey Minyard
96febe9fb7 [PATCH] IPMI: watchdog handle panic properly
Modify the watchdog timeout in IPMI to only do things at panic/reboot time if
the watchdog timer was already running.  Some BIOSes do not disable the
watchdog timer at startup, and this led to a reboot a while later if the new
OS running didn't start monitoring the watchdog, even if the watchdog was not
running before.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Corey Minyard
1a245866f8 [PATCH] IPMI: remove high res timer code
There was some old high-res-timer code in the IPMI driver that is dead.
Remove it.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:05 -07:00
Corey Minyard
409035e088 [PATCH] IPMI: tidy msghandler timer
Tidy up the timer usage in the IPMI driver.

Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:05 -07:00
Adrian Bunk
456229a91d [PATCH] drivers/char/ipmi/ipmi_msghandler.c: make proc_ipmi_root static
Make struct proc_ipmi_root static.

Besides this, tremove removes an unused #ifdef CONFIG_PROC_FS from
include/linux/ipmi.h.

Acked-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:48 -07:00
akpm@osdl.org
33979734cd [PATCH] IPMI: use schedule in kthread
Corey Minyard <minyard@acm.org>

The kthread used to speed up polling for IPMI was using udelay in its
busy-wait polling loop when the lower-level state machine told it to do a
short delay.  This just used CPU and didn't help scheduling, thus causing
bad problems with other tasks.  Call schedule() instead.

Signed-off-by: Corey Minyard <minyard@acm.org>
Acked-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 17:32:40 -07:00