Commit Graph

31371 Commits

Author SHA1 Message Date
Heiko Carstens
c406abd3a6 [S390] cleanup bitops.h.
Encapsulate complete bitops.h with #ifdef __KERNEL__ and remove the now
superfluous ALIGN_CS define and its users.
This patch is needed for compiling klibc.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2006-06-29 14:56:13 +02:00
Paul Mackerras
339d76c543 [POWERPC] Use little-endian bit from firmware ibm,pa-features property
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 17:12:30 +10:00
Michael Ellerman
33dbcf72f6 [POWERPC] Make sure smp_processor_id works very early in boot
There's a small period early in boot where we don't know which cpu we're
running on. That's ok, except that it means we have no paca, or more
correctly that our paca pointer points somewhere random.

So that we can safely call things like smp_processor_id(), we need a paca,
so just assume we're on cpu 0. No code should _write_ to the paca before
we've set the correct one up.

We setup the proper paca after we've scanned the flat device tree in
early_setup(), so there's no need to do it again in start_here_common.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:22:47 +10:00
Olof Johansson
feb76c7b23 [POWERPC] U4 DART improvements
Better late than never...

Respin based on previous comment. Only remaining issue last time was an
extra mb() that I've taken out.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:22:46 +10:00
Mark A. Greer
c220153654 [POWERPC] todc: add support for Time-Of-Day-Clock
This is a resubmit with a proper subject and with all comments addressed.
Applies cleanly to powerpc.git 649e857972

Mark
--

The todc code from arch/ppc supports many todc/rtc chips and is needed
in arch/powerpc.  This patch adds the todc code to arch/powerpc.

Signed-off-by: Mark A. Greer <mgreer@mvista.com>
--

 arch/powerpc/Kconfig         |    7
 arch/powerpc/sysdev/Makefile |    1
 arch/powerpc/sysdev/todc.c   |  392 ++++++++++++++++++++++++++++++++++
 include/asm-powerpc/todc.h   |  487 +++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 887 insertions(+)
--
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:22:46 +10:00
Stephen Rothwell
16e9f99444 [POWERPC] Make lparcfg.c work when both iseries and pseries are selected
This also consolidates the initial bits of lparcfg_data() and adds the
partition number to the iSeries flattened device tree.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:22:46 +10:00
Sonny Rao
f86c9747fe [POWERPC] Fix idr locking in init_new_context
We always need to serialize accesses to mmu_context_idr.

I hit this bug when testing with a small number of mmu contexts.

Signed-off-by: Sonny Rao <sonny@burdell.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:22:46 +10:00
Zang Roy-r61911
975b365895 [POWERPC] mpc7448hpc2 (taiga) board config file
Add default config for mpc7448 hpc2 (taiga) board.

Signed-off-by: Roy Zang	<tie-fei.zang@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:20:36 +10:00
Zang Roy-r61911
2b9d7467a6 [POWERPC] Add tsi108 pci and platform device data register function
Add Tundra Semiconductor tsi108 pci and platform device data register
function support.

Signed-off-by: Alexandre Bounine <alexandreb@tundra.com>
Signed-off-by: Roy Zang	<tie-fei.zang@freescale.com>

 ---
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:20:36 +10:00
Zang Roy-r61911
c5d56332fd [POWERPC] Add general support for mpc7448hpc2 (Taiga) platform
Add support for Freescale mpc7448 (Taiga) board support

Signed-off-by: Roy Zang  <tie-fei.zang@freescale.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:20:36 +10:00
Paul Mackerras
1729dc7833 [POWERPC] Correct the MAX_CONTEXT definition
When we increased the address space per process to 2^44 bytes, the
number of contexts that we could actually use reduced, but we forgot
to decrease the MAX_CONTEXT definition.  (Fortunately this would only
cause problems if we actually had more than 512k user processes
running.)  This patch corrects the definition.

Signed-off-by: Paul Mackerras <paulus@samba.org>
2006-06-29 16:16:15 +10:00
Linus Torvalds
0a6047eef1 Fix vsnprintf off-by-one bug
The recent vsnprintf() fix introduced an off-by-one, and it's now
possible to overrun the target buffer by one byte.

The "end" pointer points to past the end of the buffer, so if we
have to truncate the result, it needs to be done though "end[-1]".

[ This is just an alternate and simpler patch to one proposed by Andrew
  and Jeremy, who actually noticed the problem ]

Acked-by: Andrew Morton <akpm@osdl.org>
Acked-by: Jeremy Fitzhardinge <jeremy@goop.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 17:09:34 -07:00
Linus Torvalds
27d68a36c4 Merge branch 'nommu' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'nommu' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] nommu: backtrace code must not reference a discarded section
  [ARM] nommu: Initial uCLinux support for MMU-based CPUs
  [ARM] nommu: prevent Xscale-based machines being selected
  [ARM] nommu: export flush_dcache_page()
  [ARM] nommu: remove fault-armv, mmap and mm-armv files from nommu build
  [ARM] Remove TABLE_SIZE, and several unused function prototypes
  [ARM] nommu: Provide a simple flush_dcache_page implementation
  [ARM] nommu: add arch/arm/Kconfig-nommu to Kconfig files
  [ARM] nommu: add stubs for ioremap and friends
  [ARM] nommu: avoid selecting TLB and CPU specific copy code
  [ARM] nommu: uaccess tweaks
  [ARM] nommu: adjust headers for !MMU ARM systems
  [ARM] nommu: we need the TLS register emulation for nommu mode
2006-06-28 16:20:49 -07:00
Linus Torvalds
76a22271fd Merge branch 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'devel' of master.kernel.org:/home/rmk/linux-2.6-arm:
  [ARM] 3672/1: PXA: don't probe output GPIOs for interrupt
  [ARM] 3671/1: ep93xx: add cirrus logic edb9315 support
  [ARM] 3370/2: ep93xx: add crunch support
  [ARM] 3665/1: crunch: add ptrace support
  [ARM] 3664/1: crunch: add signal frame save/restore
  [ARM] 3663/1: fix resource->end off-by-one thinko during physmap conversion
  [ARM] 3662/1: ixp23xx: don't include asm/hardware.h in uncompress.h
  [ARM] 3660/1: Remove legacy defines
  [ARM] 3661/1: S3C2412: Fix compilation if CPU_S3C2410 only
  [ARM] 3658/1: S3C244X: Change usb-gadget name to s3c2440-usbgadget
  [ARM] Remove the __arch_* layer from uaccess.h
2006-06-28 16:20:26 -07:00
Linus Torvalds
fffcb480e4 Merge master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog
* master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
  [WATCHDOG] Documentation/watchdog update
  [WATCHDOG] convert AT91RM9200 watchdog to platform driver
  [WATCHDOG] add WDIOC_GETTIMELEFT ioctl
  [WATCHDOG] Pre-Timeout flags
2006-06-28 16:03:06 -07:00
Thomas Gleixner
b44597906e [PATCH] Fix plist include dependency
plist.h uses container_of, which is defined in kernel.h.
Include kernel.h in plist.h as the kernel.h include does not longer
happen automatically on all architectures.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:54:27 -07:00
David Brownell
980a01c9bf [PATCH] SPI: infrastructure to initialize spi_device.mode early
This patch adds earlier initialization of spi_device.mode, as needed
on boards using nondefault chipselect polarity.  An example would be
ones using the RS5C348 RTC without an external signal inverter between
the RTC chipselect and the SPI controller.

Without this mechanism, the first setup() call for that chip would
wrongly enable chips, corrupting transfers to/from other chips sharing
that SPI bus.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:51:01 -07:00
Linus Torvalds
8f7c58814e Merge master.kernel.org:/pub/scm/linux/kernel/git/dtor/input
* master.kernel.org:/pub/scm/linux/kernel/git/dtor/input:
  Input: db9 - fix potential buffer overrun
  Input: atkbd - fix hardware autorepeat
  Input: wistron - add mapping for Wistron MS 2111
2006-06-28 15:12:25 -07:00
Greg Ungerer
1c952af548 [PATCH] m68knommu: remove fixed ROM region setups from linker script
Remove the hard coded ROM region setups. Use Kconfig options to specify
these in a generic way for platorms that want them.

This builds on top of the other recent m68knommu linker script changes
to completely remove fixed board configurations.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
c750a012da [PATCH] m68knommu: configuration options for ROM region
Use Kconfig options to setup the optional ROM region used on some
platforms. We used to define this in the linker script on a per
board basis. The configure options are more flexible and clean up
the linker script a lot.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
3448ff8967 [PATCH] m68knommu: fix 68EZ328/config.c asm
Fix 68EZ328/config.c asm to be clean for new gcc versions.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
69614fc66a [PATCH] m68knommu: fix 68VZ328/config.c asm
Fix 68VZ328/config.c asm to be clean for new gcc versions.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
bda6583826 [PATCH] m68knommu: fix 68360/config.c asm
Fix 68360/config.c asm to be clean for new gcc versions.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
0f7cfcc5bf [PATCH] m68knommu: include irqnode.h in 68360/ints.c
The irqnode_t struct has moved to irqnode.h, need to include that
68360 ints.c.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
0aee77b221 [PATCH] m68knommu: fix clobber list in uCdimm/uCsimm helper asm
Fix clobber list in uCsimm/uCdimm boot load helper asm.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
541960fef7 [PATCH] m68knommu: build support for 68328 romvec.S
Conditionaly compile the 68328 romvec code based on the ROM configuration
being enabled.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
0d44269e1f [PATCH] m68knommu: remove romvec asm code from ints.c
Remove the inline 68328 romvec section asm code into its own file.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
727dda800f [PATCH] m68knommu: fix compilation problems with 68328serial driver
Clean out the 68328serial driver:

. remove use of cli/sti
. fix usage of tty_* calls
. remove unused variables

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:47 -07:00
Greg Ungerer
9a9bb6fb34 [PATCH] m68knommu: create romvec.S for 68328
Create the 68328 romvec section in its own assembler file. It can be
compiled in when required.

Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 15:03:46 -07:00
Linus Torvalds
873d8898b7 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [IA64-SGI] fix prom revision checks in SN kernel
  [IA64] tiger_defconfig s/NR_CPUS=4/NR_CPUS=16/
  [IA64-SGI] - Pass OS logical cpu number to the SN prom (bios)
  [IA64] palinfo.c: s/register_cpu_notifier/register_hotcpu_notifier/
2006-06-28 15:00:49 -07:00
Andrew Morton
d9a5685436 [PATCH] x86_64: oprofile build fix
WARNING: "unset_nmi_callback" [arch/x86_64/oprofile/oprofile.ko] undefined!
WARNING: "set_nmi_callback" [arch/x86_64/oprofile/oprofile.ko] undefined!

Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:07 -07:00
Alan Cox
3706a8728b [PATCH] Set err_stops_fifo for newer Promise as well
Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:07 -07:00
Alan Cox
57e834e2fb [PATCH] ide: clean up pdc202xx_old so its more readable (done so I could work on libata ports)
Also sets the new fifo flag so that we don't hang on some errors with this
chipset.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:07 -07:00
Alan Cox
f201f5046d [PATCH] ide: housekeeping on IDE drivers
Move auto arrays to static (const).  Clean up using PCI_DEVICE in places,
remove unreachable junk and dead code.

Fix the serverworks cable detect logic (if ordering is wrong).  Backport
from libata.  Plenty of scope for more cleanup left.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:07 -07:00
Alan Cox
da574af755 [PATCH] ide: fix error handling for drives which clear the FIFO on error
If the controller FIFO cleared automatically on error we must not try
and drain it as this will hang some chips.

Based in concept on a broken patch from -mm some while back

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Alan Cox
2930d1bed7 [PATCH] SC1200 debug printk
Kill a pair of long escaped debug printk calls

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Alan Cox
19c1ef5f67 [PATCH] ide: clean up siimage
Remove all the ifdef preparation for enhanced features that never occcurred
and is only in libata.  For the SATA chips (but not yet PATA ones) politely
suggest to the user that libata may offer more features.

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Sergei Shtylylov <sshtylyov@ru.mvista.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Alan Cox
1a1276e7b6 [PATCH] Old IDE, fix SATA detection for cabling
This is based on the proposed patches flying around but also checks that
the device in question is new enough to have word 93 rather thanb blindly
assuming word 93 == 0 means SATA (see ATA-5, ATA-7)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Randy Dunlap
1e866f0bf8 [PATCH] oss/via: make bitfield unsigned
Make a 1-bit field unsigned like all of the others near it.
sound/oss/via82cxxx_audio.c:311:21: error: dubious one-bit signed bitfield

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Randy Dunlap
be6990e747 [PATCH] ac97_codec: make bitfield unsigned
Make a 1-bit bitfield unsigned (no space for sign bit).
Removes 24 sparse warnings from this one file:
include/linux/ac97_codec.h:262:13: error: dubious one-bit signed bitfield

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Randy Dunlap
e85f8dcc27 [PATCH] sound: fix cs4232 section mismatch
Fix section mismatch: adds __init to probe function,
frees some init memory, not critical.
WARNING: sound/oss/cs4232.o - Section mismatch: reference to .init.text: from .text after 'cs4232_pnp_probe' (at offset 0x152)

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:06 -07:00
Michael Hanselmann
cab267c65f [PATCH] powermac backlight fixes
Fix a erroneous calculation of the legacy brightness values as reported by
Paul Collins.  Additionally, it moves the calculation of the negative value
in the radeonfb driver after the value check.

Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Paul Collins <paul@briny.ondioline.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
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
Alan Cox
4ac4360b95 [PATCH] istallion: cleanups
Turned out to be rather a monster

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:05 -07:00
Alan Cox
effc8b704b [PATCH] stallion: fix recent SMP locking cleanup
Works better on SMP if...

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:05 -07:00
Latchesar Ionkov
9d7fa40098 [PATCH] v9fs: fix fid check in v9fs_create
Fix an incorrect check whether a fid was allocated in v9fs_create and if it
should be freed on error.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.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
Latchesar Ionkov
94374e7cc3 [PATCH] v9fs: return the correct error when interrupted by signal
If a signal interrupts the user process, v9fs sends a flush request to the
file server and waits for its response.  It error code is incorrectly set
to the error code of the flush message instead of ERESTARTSYS.  The patch
sets the error code to the correct value.

Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Cc: Eric Van Hensbergen <ericvh@ericvh.myip.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
Paul Fulghum
33b37a33c2 [PATCH] remove active field from tty buffer structure
Remove 'active' field from tty buffer structure.  This was added in 2.6.16
as part of a patch to make the new tty buffering SMP safe.  This field is
unnecessary with the more intelligently written flush_to_ldisc that adds
receive_room handling.

Removing this field reverts to simpler logic where the tail buffer is
always the 'active' buffer, which should not be freed by flush_to_ldisc.
(active == buffer being filled with new data)

The result is simpler, smaller, and faster tty buffer code.

Signed-off-by: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-28 14:59:05 -07:00