Commit Graph

21881 Commits

Author SHA1 Message Date
Akira Iguchi
06a9952b83 scc_pata: bugfix for checking DMA IRQ status
On Tuesday 27 February 2007, Akira Iguchi wrote:
>
> But since I sent the first patch, I found a bug for checking DMA IRQ status.
> (http://www.spinics.net/lists/linux-ide/msg06903.html)
> Then I sent the fixed patch for libata only. So my drivers/ide patch
> still has same bug and I want to fix it, too.
>
> The following patch fixes this bug. Please apply this patch.

From: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:55 +01:00
Alan Cox
846c11abc7 ide: remove a ton of pointless #undef REALLY_SLOW_IO
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:54 +01:00
Alan Cox
8693d3e47b siimage: DRAC4 note
Revised DRAC4 warning as Jeff suggested, this one includes more info
about why the problem occurs

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:54 +01:00
Jan Beulich
ed8ccee091 adjust legacy IDE resource setting (v2)
The change to force legacy mode IDE channels' resources to fixed non-zero
values confuses (at least some versions of) X, because the values reported
by the kernel and those readable from PCI config space aren't consistent
anymore.  Therefore, this patch arranges for the respective BARs to also
get updated if possible.

Signed-off-by: Jan Beulich <jbeulich@novell.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:54 +01:00
Andrew Morton
9e5755bce0 ide: fix pmac breakage
Fix breakage added in the IDE devel tree.

Add header, then fix

drivers/ide/ppc/pmac.c: In function `pmac_ide_setup_dma':
drivers/ide/ppc/pmac.c:2044: warning: assignment from incompatible pointer type
drivers/ide/ppc/pmac.c: In function `pmac_ide_dma_host_on':
drivers/ide/ppc/pmac.c:1989: warning: control reaches end of non-void function
include/linux/pci.h: In function `pmac_ide_init':
drivers/ide/ppc/pmac.c:1563: warning: ignoring return value of `pci_register_driver', declared with attribute warn_unused_result

Then add some apparently-long-missing error handling.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:54 +01:00
Magnus Damm
ed89616786 ide-cs: Update device table
Add CFA devices from I-O Data, Mitsubishi and Viking. Add SanDisk comment.

Signed-off-by: Magnus Damm <damm@opensource.se>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:54 +01:00
Sergei Shtylyov
81d368e0e2 ide: ide_get_best_pio_mode() returns incorrect IORDY setting (take 2)
The function ide_get_best_pio_mode() fails to return the correct IORDY setting
for the explicitly specified modes -- fix this along with the heading comment,
and also remove the long commented out code.

Also, while at it, correct the misliading comment about the PIO cycle time in
<linux/ide.h> -- it actually consists of only the active and recovery periods,
with only some chips also including the address setup time into equation...

[ bart: sl82c105 seems to be currently the only driver affected by this fix ]

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:53 +01:00
Sergei Shtylyov
07af427606 piix/slc90e66: more tuneproc() fixing (take 2)
The tuneproc() method in both these drivers failed to set the drive's own speed.
Fix this by renaming the function and "wrapping around it" the new tuneproc()
method.  Switch back to calling tuneproc() in the PIO fallback code.
While at it, also convert the rest of the PIO timing code into proper C. :-)

Has been kind of tested on SLC90E66.  I'm too lazy to reboot my box and test
on ICH4... :-)

[ bart: I quickly tested it on ICH4. ]

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:53 +01:00
Tejun Heo
fab59375b9 ide: fix drive side 80c cable check, take 2
eighty_ninty_three() had word 93 validitity check but not the 80c bit
test itself (bit 13).  This increases the chance of incorrect wire
detection especially because host side cable detection is often
unreliable and we sometimes soley depend on drive side cable
detection.  Fix it.

[ bart: fix off-by-1 bit name in the patch description ]

Signed-off-by: Tejun Heo <htejun@gmail.com>
Acked-by: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:53 +01:00
Sergei Shtylyov
f92d50e6fd cmd64x: fix PIO mode setup (take 3)
The driver's tuneproc() method fails to set the drive's own speed -- fix this
by renaming the function to cmd64x_tune_pio(), making it return the mode set,
and "wrapping" the new tuneproc() method around it; while at it, also get rid
of the non-working prefetch control code (filtering out related argument values
in the "wrapper"), remove redundant PIO5 mode limitation, make cmdprintk() give
more sensible mode info, and remove mention about the obsolete /proc/ interface.
Get rid of the broken config_chipset_for_pio() which always tried to set PIO4,
switch to always auto-tuning PIO instead.
Oh, and add the missing PIO5 support to the speedproc() method while at it. :-)

Warning: compile tested only -- getting to the real hardware isn't that easy...

On Tuesday 06 February 2007 22:11, Mikael Pettersson <mikpe@it.uu.se> wrote:
> 
> Worked fine on my SPARC Ultra5 with a CMD646 IDE controller.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:53 +01:00
Sergei Shtylyov
21b8247713 alim15x3: fix PIO mode setup
The driver's tuneproc() method fails to set the drive's own speed -- fix this
by renaming the function to ali15x3_tune_pio() and "wrapping" the new tuneproc()
method around it and making it return the mode set, update the heading comment.

Also, setting PIO mode via the speedproc() method does not work due to passing 
to the tuneproc() method's a mode number not biased by XFER_PIO_0 -- fix this
along with a typo in the heading comment...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-03-03 17:48:52 +01:00
Linus Torvalds
bb648a0d22 Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  libata: add CONFIG_PM to libata core layer
  libata: add missing CONFIG_PM in LLDs
  libata: add missing PM callbacks
  pata_qdi: Fix initialisation
  [libata] pata_cmd64x: fix driver description in comments
  [libata] pata_{legacy,sc1200,sl82c105}: add missing hooks
  [libata] change master/slave IDENTIFY order
  libata-core: Fix simplex handling
2007-03-02 17:58:52 -08:00
Jeff Garzik
8b453397da [netdrvr] tulip, de2104x: fix typo: s/__sparc_/__sparc__/
Noticed by Doug Nazar (via David Miller).

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 20:21:56 -05:00
Dale Farnsworth
5ada386bad mv643xx_eth: move mac_addr inside mv643xx_eth_platform_data
The information contained within platform_data should be self-contained.
Replace the pointer to a MAC address with the actual MAC address in
struct mv643xx_eth_platform_data.

Signed-off-by: Dale Farnsworth <dale@farnsworth.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 20:16:10 -05:00
Dave Jones
471a567144 Fix mv643xx_eth compilation.
Commit 908b637fe7 removed ETH_DMA_ALIGN
but missed a usage of it in a macro, which broke the build.

Signed-off-by: Dave Jones <davej@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 20:16:10 -05:00
Ron Mercer
63f779261f qla3xxx: bugfix for line omitted in previous patch.
This missing line caused transmit errors on the Qlogic 4032 chip.

Signed-off-by: Ron Mercer <ron.mercer@qlogic.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 20:16:10 -05:00
Linsys Contractor Mithlesh Thukral
e0e20a1a08 NetXen: Fix second rmmod failure observed on PowerPC machines.
Signed-off by: Mithlesh Thukral <mithlesh@netxen.com>

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 20:02:28 -05:00
Linsys Contractor Mithlesh Thukral
0c25cfe18a NetXen: Updates, removal of unsupported features and minor bug fixes.
Signed-off-by: Mithlesh Thukral <mithlesh@netxen.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 20:02:28 -05:00
Divy Le Ray
d518725fa6 cxgb3 - Tag driver version
This patch adds a "-ko" tag to the driver version.

Signed-off-by: Divy Le Ray <divy@chelsio.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 19:55:07 -05:00
Brice Goglin
4a2e612a3b myri10ge: fix copyright and license
Fix copyright and license ("regents" should not have ever been used).

Signed-off-by: Brice Goglin <brice@myri.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 19:55:07 -05:00
Ralf Baechle
c8d64f8a05 jmr3927: do not call tc35815_killall().
No need to stop tc35815 before resetting the board.  This fixes the
build of tc35815 as a module.  This also means there is no caller of
tc35815_killall left, so remove that function also.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 19:55:07 -05:00
Jeff Garzik
db7ce76f6b Merge branch 'upstream-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 into upstream-fixes 2007-03-02 19:40:24 -05:00
Tejun Heo
6ffa01d88c libata: add CONFIG_PM to libata core layer
Conditionalize all PM related stuff in libata core layer using
CONFIG_PM.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 18:30:35 -05:00
Tejun Heo
438ac6d5e3 libata: add missing CONFIG_PM in LLDs
Add missing #ifdef CONFIG_PM conditionals around all PM related parts
in libata LLDs.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 18:30:35 -05:00
Tejun Heo
b23ff24436 libata: add missing PM callbacks
Some LLDs were missing scsi device PM callbacks while having host/port
suspend support.  Add missing ones.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 18:27:34 -05:00
David S. Miller
43ecf5295b [AOE]: Add get_unaligned() calls where needed.
Based upon a report by Andrew Walrond.

Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-02 15:22:55 -08:00
David S. Miller
7ab876703d [RADEON]: Fix blanking return value.
If you'll recall, over a year ago, I pointed out that the current
Radeon driver erroneously returns -EINVAL for valid blanking codes,
here is a link to that thread:

	http://lkml.org/lkml/2006/1/28/6

No other driver does this, and it confuses the X server into thinking
that the device does not support blanking properly.

I looked again and there is simply no reason for the Radeon driver to
return -EINVAL for FB_BLANK_NORMAL.  It claims it wants to do this in
order to convince fbcon to blank in software, right here:

			if (fb_blank(info, blank))
				fbcon_generic_blank(vc, info, blank);

to software blank the screen.  But it only causes that to happen
in the FB_BLANK_NORMAL case.

That makes no sense because the Radeon code does this:

		val |= CRTC_DISPLAY_DIS;

in the FB_BLANK_NORMAL case so should be blanking the hardware, and
there is therefore no reason to SW blank by returning -EINVAL.

Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Antonino Daplas <adaplas@gmail.com>
2007-03-02 15:22:54 -08:00
Alan Cox
cc7c15ec16 pata_qdi: Fix initialisation
The QDI init code contains some bugs which mean it only works if you have
a test setup that causes both a successful and failed probe. Fix this

Found by Philip Guo

(Who found it working on code analysis tools not running VLB IDE
controllers)

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 18:18:38 -05:00
Jeff Garzik
fb9f8905a8 [libata] pata_cmd64x: fix driver description in comments
Trivial comment fix, taken out of a larger Alan Cox patch.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 18:17:22 -05:00
Jeff Garzik
bf7551c441 [libata] pata_{legacy,sc1200,sl82c105}: add missing hooks
Alan Cox noticed several hooks in pata_* drivers were missing, when
he authored his ->cable_detect hook patches.  This patch extracts
just those fixes from Alan's patches, adding the necessary hooks
(usually ->freeze, ->thaw, and ->post_internal_cmd) to the drivers.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 18:09:05 -05:00
Jeff Garzik
f31f0cc2f0 [libata] change master/slave IDENTIFY order
2.6.21-rc has horrible problems with libata and PATA cable types (and
thus speeds). This occurs because Tejun fixed a pile of other bugs and
we now do cable detect enforcement for drive side detection properly.

Unfortunately we don't do the process around cable detection right. Tejun
identified the problem and pointed to the right Annex in the spec, this patch
implements the needed changes.

The basic requirement is that we have to identify the slave before the
master.

The patch switches the identify order so that we can do the drive side
detection correctly.

[NOTE: patch and description extracted from a larger work written
and signed-off-by Alan Cox]

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 17:47:28 -05:00
Alan
032af1ce16 libata-core: Fix simplex handling
The initial simplex handling code is fooled if you suspend and resume.
This also causes problems with some single channel controllers which
claim to be simplex.

The fix is fairly simple, instead of keeping a flag to remember if we
gave away the simplex channel we remember the actual owner. As the owner
is always part of the host_set we don't even need a refcount.

Knowing the owner also means we can reassign simplex DMA channels in
future hotplug code etc if we need to

Signed-off-by: Alan Cox <alan@redhat.com>
(and a signed-off for the patch I sent before while I remember)
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-02 17:42:48 -05:00
Linus Torvalds
562aa1d4c6 Merge branch 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  ahci: improve spurious SDB FIS handling
  ahci/pata_jmicron: match class not function number
  jmicron ATA: reimplement jmicron ATA quirk
  pata_jmicron: drop unnecessary device programming in [re]init
  libata: blacklist FUJITSU MHT2060BH for NCQ
  sata_sil24: kill unused local variable idx in sil24_fill_sg()
  libata: clear drvdata in ata_host_release(), take#2
2007-03-01 19:48:21 -08:00
Linus Torvalds
b4350861dd Merge branch 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jikos/hid:
  HID: fix Logitech DiNovo Edge touchwheel and Logic3 /SpectraVideo middle button
  HID: add git tree information to MAINTAINERS
  HID: fix broken Logitech S510 keyboard report descriptor; make extra keys work
  HID: fix possible double-free on error path in hid parser
  HID: hid-debug.c should #include <linux/hid-debug.h>
  HID: fix bug in zeroing the last field byte in output reports
  USB HID: use CONFIG_HID_DEBUG for outputting report descriptor
  USB HID: Fix USB vendor and product IDs endianness for USB HID devices
2007-03-01 17:30:51 -08:00
Linus Torvalds
100b425480 Merge master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb:
  V4L/DVB (5305): Mark VIDIOC_DBG_S/G_REGISTER as experimental
  V4L/DVB (5271): Add VIDIOC_TRY_ENCODER_CMD and VIDIOC_ENCODER_CMD ioctls.
  V4L/DVB (5270): Add VIDIOC_G_ENC_INDEX ioctl
  V4L/DVB (5276): Cxusb: fix firmware patch for big endian systems
  V4L/DVB (5258): Cafe_ccic: fix compiler warning
  V4L/DVB (5295): Digitv: open nxt6000 i2c_gate for TDED4 tuner handling
  V4L/DVB (5304): Improve chip matching in v4l2_register
  V4L/DVB (5255): Fix cx25840 firmware loading.
2007-03-01 17:25:23 -08:00
Tejun Heo
afb2d552bc ahci: improve spurious SDB FIS handling
Spurious SDB FIS during NCQ might not contain spurious completions.
It could be spurious TF update or invalid async notification.  Treat
as HSM violation iff a spurious SDB FIS contains spurious completions;
otherwise, just whine once about it.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:19:45 -05:00
Tejun Heo
e34bb370de ahci/pata_jmicron: match class not function number
Make jmiron_ata quirk update pdev->class after programming the device
and update ahci and pata_jmicron such that they match class code
instead of checking function number manually.  For ahci, it matches
for vendor and class.  For pata_jmicron, it matches vendor, device and
class as IDE class isn't as well defined as AHCI class.

This makes jmicron device matching more conventional and script
friendly.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:19:45 -05:00
Tejun Heo
5ee2ae7fb2 jmicron ATA: reimplement jmicron ATA quirk
Reimplement jmicron ATA quirk.

* renamed to quirk_jmicron_ata()
* quirk is invoked only for the affected controllers
* programming is stricter.  e.g. conf5 bit24 is cleared if
  unnecessary.
* code factored for readability
* JMB360 and JMB368 are programmed into proper mode

Verified on JMB360, 363 and 368.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:19:45 -05:00
Tejun Heo
960627b7ad pata_jmicron: drop unnecessary device programming in [re]init
Channel redirect and AHCI mode enable programmings are done via PCI
quirk for both probe and resume paths.  Drop duplicate and possibly
unsafe device programming from pata_jmicron().

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:19:45 -05:00
Tejun Heo
09125ea617 libata: blacklist FUJITSU MHT2060BH for NCQ
Blacklist FUJITSU MHT2060BH for NCQ.  On this drive, NCQ works iff
queue depth is equal to or less than 4.  Just turn it off.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Mike Accetta <maccetta@laurelnetworks.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:16:29 -05:00
Tejun Heo
4fc00cb4d5 sata_sil24: kill unused local variable idx in sil24_fill_sg()
Kill unused local variable idx in sil24_fill_sg().

Spotted by Jeff Garzik.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:16:29 -05:00
Tejun Heo
1aa56cca5b libata: clear drvdata in ata_host_release(), take#2
Clearing drvdata in ->remove_one causes NULL pointer deference.  Clear
drvdata only in ata_host_release() after all resources are freed.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-03-01 20:16:28 -05:00
Aristeu Sergio Rozanski Filho
5a39e8c6d6 [PATCH] tty_io: fix race in master pty close/slave pty close path
This patch fixes a possible race that leads to double freeing an idr index.
 When the master begin to close, release_dev() is called and then
pty_close() is called:

        if (tty->driver->close)
                tty->driver->close(tty, filp);

This is done without helding any locks other than BKL.  Inside pty_close(),
being a master close, the devpts entry will be removed:

#ifdef CONFIG_UNIX98_PTYS
                if (tty->driver == ptm_driver)
                        devpts_pty_kill(tty->index);
#endif

But devpts_pty_kill() will call get_node() that may sleep while waiting for
&devpts_root->d_inode->i_sem.  When this happens and the slave is being
opened, tty_open() just found the driver and index:

        driver = get_tty_driver(device, &index);
        if (!driver) {
                mutex_unlock(&tty_mutex);
                return -ENODEV;
        }

This part of the code is already protected under tty_mute.  The problem is
that the slave close already got an index.  Then init_dev() is called and
blocks waiting for the same &devpts_root->d_inode->i_sem.

When the master close resumes, it removes the devpts entry, and the
relation between idr index and the tty is gone.  The master then sleeps
waiting for the tty_mutex on release_dev().

Slave open resumes and found no tty for that index.  As result, a NULL tty
is returned and init_dev() doesn't flow to fast_track:

        /* check whether we're reopening an existing tty */
        if (driver->flags & TTY_DRIVER_DEVPTS_MEM) {
                tty = devpts_get_tty(idx);
                if (tty && driver->subtype == PTY_TYPE_MASTER)
                        tty = tty->link;
        } else {
                tty = driver->ttys[idx];
        }
        if (tty) goto fast_track;

The result of this, is that a new tty will be created and init_dev() returns
sucessfull. After returning, tty_mutex is dropped and master close may resume.

Master close finds it's the only use and both sides are closing, then releases
the tty and the index. At this point, the idr index is free, but slave still
has it.

Slave open then calls pty_open() and finds that tty->link->count is 0,
because there's no master and returns error.  Then tty_open() calls
release_dev() which executes without any warning, as it was a case of last
slave close when the master is already closed (master->count == 0,
slave->count == 1).  The tty is then released with the already released idr
index.

This normally would only issue a warning on idr_remove() but in case of a
customer's critical application, it's never too simple:

thread1: opens master, gets index X
thread1: begin closing master
thread2: begin opening slave with index X
thread1: finishes closing master, index X released
thread3: opens master, gets index X, just released
thread2: fails opening slave, releases index X         <----
thread4: opens master, gets index X, init_dev() then find an already in use
	 and healthy tty and fails

If no more indexes are released, ptmx_open() will keep failing, as the
first free index available is X, and it will make init_dev() fail because
you're trying to "reopen a master" which isn't valid.

The patch notices when this race happens and make init_dev() fail
imediately.  The init_dev() function is called with tty_mutex held, so it's
safe to continue with tty till the end of function because release_dev()
won't make any further changes without grabbing the tty_mutex.

Without the patch, on some machines it's possible get easily idr warnings
like this one:

idr_remove called for id=15 which is not allocated.
 [<c02555b9>] idr_remove+0x139/0x170
 [<c02a1b62>] release_mem+0x182/0x230
 [<c02a28e7>] release_dev+0x4b7/0x700
 [<c02a0ea7>] tty_ldisc_enable+0x27/0x30
 [<c02a1e64>] init_dev+0x254/0x580
 [<c02a0d64>] check_tty_count+0x14/0xb0
 [<c02a4f05>] tty_open+0x1c5/0x340
 [<c02a4d40>] tty_open+0x0/0x340
 [<c017388f>] chrdev_open+0xaf/0x180
 [<c017c2ac>] open_namei+0x8c/0x760
 [<c01737e0>] chrdev_open+0x0/0x180
 [<c0167bc9>] __dentry_open+0xc9/0x210
 [<c0167e2c>] do_filp_open+0x5c/0x70
 [<c0167a91>] get_unused_fd+0x61/0xd0
 [<c0167e93>] do_sys_open+0x53/0x100
 [<c0167f97>] sys_open+0x27/0x30
 [<c010303b>] syscall_call+0x7/0xb

using this test application available on:
 http://www.ruivo.org/~aris/pty_sodomizer.c

Signed-off-by: Aristeu Sergio Rozanski Filho <aris@ruivo.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Chuck Ebbert <cebbert@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:39 -08:00
Karsten Keil
17f0cd2f35 [PATCH] Fix buffer overflow and races in capi debug functions
The CAPI trace debug functions were using a fixed size buffer, which can be
overflowed if wrong formatted CAPI messages were sent to the kernel capi
layer.  The code was also not protected against multiple callers.  This fix
bug 8028.

Additionally the patch make the CAPI trace functions optional.

Signed-off-by: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:39 -08:00
Geert Uytterhoeven
3f555c700b [PATCH] ps3: introduce CONFIG_PS3_ADVANCED
ps3: Introduce CONFIG_PS3_ADVANCED, as suggested by Roman Zippel, and use
it to control questions about PS3 subsystems that may not be obvious for
the casual user.

This gets rid of the following warning on non-powerpc platforms: |
drivers/video/Kconfig:1604:warning: 'select' used by config symbol 'FB_PS3'
refer to undefined symbol 'PS3_PS3AV'

Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com>
Acked-by: Geoff Levand <geoffrey.levand@am.sony.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:38 -08:00
Kristen Carlson Accardi
b1a316f6f9 [PATCH] ACPI: make bay depend on dock
Since the bay driver depends on the dock driver for proper notification,
make this driver depend on the dock driver.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Acked-by: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:38 -08:00
Tilman Schmidt
dae9f8e63c [PATCH] drivers/isdn/gigaset: build asyncdata.o into the gigaset module (fix)
a) Remove #define acrobatics that have become unnecessary by the move of
   asyncdata.o into the common part.

b) Correct the rule for building the common part into the kernel when
   some or all hardware specific parts are built as modules.

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Cc: Adrian Bunk <bunk@stusta.de>
Cc: Karsten Keil <kkeil@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:38 -08:00
David Brownell
e109ebd1ee [PATCH] rtc_cmos oops fix
Fix an oops on the rtc_device_unregister() path by waiting until the last
moment before nulling the rtc->ops vector.  Fix some potential oopses by
having the rtc_class_open()/rtc_class_close() interface increase the RTC's
reference count while an RTC handle is available outside the RTC framework.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:37 -08:00
NeilBrown
f416885ef4 [PATCH] md: add support for reshape of a raid6
i.e. one or more drives can be added and the array will re-stripe
while on-line.

Most of the interesting work was already done for raid5.  This just extends it
to raid6.

mdadm newer than 2.6 is needed for complete safety, however any version of
mdadm which support raid5 reshape will do a good enough job in almost all
cases (an 'echo repair > /sys/block/mdX/md/sync_action' is recommended after a
reshape that was aborted and had to be restarted with an such a version of
mdadm).

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:36 -08:00
NeilBrown
b4c4c7b809 [PATCH] md: restart a (raid5) reshape that has been aborted due to a read/write error
An error always aborts any resync/recovery/reshape on the understanding that
it will immediately be restarted if that still makes sense.  However a reshape
currently doesn't get restarted.  With this patch it does.

To avoid restarting when it is not possible to do work, we call into the
personality to check that a reshape is ok, and strengthen raid5_check_reshape
to fail if there are too many failed devices.

We also break some code out into a separate function: remove_and_add_spares as
the indent level for that code was getting crazy.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-03-01 14:53:36 -08:00