An unprivileged process must be able to kill a setuid root program started
by the same user. This is legacy behavior needed for instance for xinit to
kill X when the window manager exits.
When an unprivileged user runs a setuid root program in !SECURE_NOROOT
mode, fP, fI, and fE are set full on, so pP' and pE' are full on. Then
cap_task_kill() prevents the user from signaling the setuid root task.
This is a change in behavior compared to when
!CONFIG_SECURITY_FILE_CAPABILITIES.
This patch introduces a special check into cap_task_kill() just to check
whether a non-root user is signaling a setuid root program started by the
same user. If so, then signal is allowed.
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com> Cc: Andrew Morgan <morgan@kernel.org> Cc: Stephen Smalley <sds@epoch.ncsc.mil> Cc: Chris Wright <chrisw@sous-sol.org> Cc: James Morris <jmorris@namei.org> Cc: Casey Schaufler <casey@schaufler-ca.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Randy Dunlap [Thu, 29 Nov 2007 00:21:46 +0000 (16:21 -0800)]
hexdump: don't print bytes with bit 7 set
As Herbert Xu pointed out, bytes (chars) with bit 7 (0x80) set are true
with isprint() but they may not be isascii() but be Unicode instead, so
don't try to print them in hex dumps.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
"Val's cross-port of the ext3 reservations code into ext2."
include/linux/ext2_fs.h got a new function whose return value is only
defined if __KERNEL__ is defined. Putting #ifdef __KERNEL__ around the
function seems to help, patch below.
Signed-off-by: Eric Sandeen <sandeen@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
dmaengine: correct invalid assumptions in the Kconfig text
This patch corrects recently changed (and now invalid) Kconfig descriptions
for the DMA engine framework:
- Non-Intel(R) hardware also has DMA engines;
- DMA is used for more than memcpy and RAID offloading.
In fact, on most platforms memcpy and RAID aren't factors, and DMA
exists so that peripherals can transfer data to/from memory while
the CPU does other work.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Dan Williams <dan.j.williams@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Anti Sullin [Thu, 29 Nov 2007 00:21:40 +0000 (16:21 -0800)]
atmel_lcdfb: LCDC startup fix
This patch adds an additional loop, that delays turning off the DMA
until the LCDC core has been turned off. This prevents the picture
to be shifted some random length when the kernel re-initializes
the LCDC.
Without this patch, the LCDC keeps running for some small time after the
PWRCON:LCD_PWR has been cleared ; the FIFO suffers an underrun and on
re-starting the LCDC the FIFO data stays shifted.
This behavior has been seen and fixed on AT91SAM9261-EK and two custom
AT91SAM9261 boards, all of them having different LCD panels.
Thanks a lot to Anti Sullin for submitting this patch (long
time ago).
Signed-off-by: Anti Sullin <anti.sullin@artecdesign.ee> Signed-off-by: Andrew Victor <andrew@sanpeople.com> Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Emelyanov [Thu, 29 Nov 2007 00:21:39 +0000 (16:21 -0800)]
The namespaces compatibility list doc
People discuss how the namespaces are working/going-to-work together.
Ted Ts'o proposed to create some document that describes what problems user
may have when he/she creates some new namespace, but keeps others shared.
I liked this idea, so here's the initial version of such a document with
the problems I currently have in mind and can describe somewhat audibly -
the "namespaces compatibility list".
The Documentation/namespaces/ directory is about to contain more docs about
the namespaces stuff.
Thanks to Cedirc for notes and spell checks on the doc, to Daniel for
additional info about IPC and User namespaces interaction and to Randy, who
alluded me to using a spell checker before sending the documentation :)
Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: Randy Dunlap <randy.dunlap@oracle.com> Cc: Daniel Lezcano <dlezcano@fr.ibm.com> Cc: Theodore Tso <tytso@mit.edu> Cc: Cedric Le Goater <clg@fr.ibm.com> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Emelyanov [Thu, 29 Nov 2007 00:21:38 +0000 (16:21 -0800)]
Isolate the UTS namespace's domainname and hostname back
Commit 7d69a1f4a72b18876c99c697692b78339d491568 ("remove CONFIG_UTS_NS
and CONFIG_IPC_NS") by Cedric Le Goater accidentally removed the code
that prevented the uts->hostname and uts->domainname values from being
overwritten from another namespace.
In other words, setting hostname/domainname via sysfs (echo xxx >
/proc/sys/kernel/(host|domain)name) cased the new value to be set in
init UTS namespace only.
Return the isolation back.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Cedric Le Goater <clg@fr.ibm.com> Acked-by: Serge Hallyn <serue@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Jean Delvare [Thu, 29 Nov 2007 00:21:35 +0000 (16:21 -0800)]
fb_ddc: fix DDC lines quirk
The code in fb_ddc_read() is said to be based on the implementation of the
radeon driver:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=fc5891c8a3ba284f13994d7bc1f1bfa8283982de
However, comparing the old radeon driver code with the new fb_ddc code
reveals some differences. Most notably, the I2C bus lines are held at the
end of the function, while the original code was releasing them (as the
comment above correctly says.)
There are a few other differences, which appear to be responsible for read
failures on my system. While tracing low-level I2C code in i2c-algo-bit, I
noticed that the initial attempt to read the EDID always failed. It takes
one retry for the read to succeed. As we are about to remove this
automatic retry property from i2c-algo-bit, reading the EDID would really
fail.
As a summary, the I2C lines quirk which is supposedly needed to read EDID
on some older monitors is currently breaking the (first) read on all other
monitors (and might not even work with older ones - did anyone try since
October 2006?)
After applying the patch below, which makes the code in fb_ddc_read()
really similar to what the radeon driver used to have, the first EDID read
succeeds again.
On top of that, as it appears that this code has been broken for one year
now and nobody seems to have complained, I'm curious if it makes sense to
keep this quirk in place. It makes the code more complex and slower just
for the sake of monitors which I guess nobody uses anymore. Can't we just
get rid of it?
Signed-off-by: Jean Delvare <khali@linux-fr.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Tested-by: Roger Leigh <rleigh@whinlatter.ukfsn.org> Tested-by: Michael Buesch <mb@bu3sch.de> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
David Woodhouse [Thu, 29 Nov 2007 00:21:32 +0000 (16:21 -0800)]
Fix <linux/kd.h> usage in userspace
For reasons unclear to me, glibc's <sys/kd.h> deliberately defeats the
attempt we make in <linux/kd.h> to include <linux/types.h>
For now, change the one instance of __u32 to 'unsigned int' instead
because it's breaking userspace. We should probably also remove our
inclusion of <linux/types.h>, since we don't use it -- but that's not a
change to make in -rc.
[akpm@linux-foundation.org: coding-style fixes] Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Samuel Thibault <samuel.thibault@ens-lyon.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pavel Emelyanov [Thu, 29 Nov 2007 00:21:31 +0000 (16:21 -0800)]
ipc: lost unlock and fput in mqueue.c on error path
The error path in sys_mq_getsetattr() after the call to
audit_mq_getsetattr() is wrong - the info->lock is not unlocked and the
struct file *filp is not put.
Fix them both.
Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Cc: Pierre Peiffer <pierre.peiffer@bull.net> Cc: Nadia Derbey <Nadia.Derbey@bull.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Ben Dooks [Thu, 29 Nov 2007 00:21:29 +0000 (16:21 -0800)]
S3C24XX: ensure we only configure valid GPIOs
If we specify an GPIO which cannot be used for the purpose, then assume
that the GPIO is not to be used and do not try and configure it. This can
be the case where the SPI bus is TX only.
Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Marcel Selhorst [Thu, 29 Nov 2007 00:21:27 +0000 (16:21 -0800)]
TPM: fix TIS device driver locality request
During the initialization of the TPM TIS driver, the necessary locality has
to be requested earlier in the init-process. Depending on the used TPM
chip, this leads to wrong information. For example: Lenovo X61s with Atmel
TPM:
Alexey Dobriyan [Thu, 29 Nov 2007 00:21:23 +0000 (16:21 -0800)]
proc: fix NULL ->i_fop oops
proc_kill_inodes() can clear ->i_fop in the middle of vfs_readdir resulting in
NULL dereference during "file->f_op->readdir(file, buf, filler)".
The solution is to remove proc_kill_inodes() completely:
a) we don't have tricky modules implementing their tricky readdir hooks which
could keeping this revoke from hell.
b) In a situation when module is gone but PDE still alive, standard
readdir will return only "." and "..", because pde->next was cleared by
remove_proc_entry().
c) the race proc_kill_inode() destined to prevent is not completely
fixed, just race window made smaller, because vfs_readdir() is run
without sb_lock held and without file_list_lock held. Effectively,
->i_fop is cleared at random moment, which can't fix properly anything.
hch: "Nice, getting rid of this is a very good step formwards.
Unfortunately we have another copy of this junk in
security/selinux/selinuxfs.c:sel_remove_entries() which would need the
same treatment."
Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru> Acked-by: Christoph Hellwig <hch@infradead.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Stephen Smalley <sds@tycho.nsa.gov> Cc: James Morris <jmorris@namei.org> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Zhao Yakui [Thu, 29 Nov 2007 00:21:21 +0000 (16:21 -0800)]
PNP: increase the maximum number of resources
On some systems the number of resources(IO,MEM) returnedy by PNP device is
greater than the PNP constant, for example motherboard devices. It brings
that some resources can't be reserved and resource confilicts. This will
cause PCI resources are assigned wrongly in some systems, and cause hang.
This is a regression since we deleted ACPI motherboard driver and use PNP
system driver.
[akpm@linux-foundation.org: fix text and coding-style a bit] Signed-off-by: Li Shaohua <shaohua.li@intel.com> Signed-off-by: Zhao Yakui <yakui.zhao@intel.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: Thomas Renninger <trenn@suse.de> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
_PAGE_PCD maps a page with caching disabled, which is typically used for
mapping harware registers. Xen never allows it to be set on a mapping, and
unprivileged guests never need it since they can't see the real underlying
hardware. However, some uncached mappings are made early when probing the
(non-existent) APIC, and its OK to mask off the PCD flag in these cases.
This became necessary because Xen started checking for this bit, rather
than silently masking it off.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
WANG Cong [Thu, 29 Nov 2007 00:21:16 +0000 (16:21 -0800)]
UML: build fix
include/asm-um/arch points to the non-existed include/asm-i386 directory.
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com> Cc: Jeff Dike <jdike@karaya.com> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mel Gorman [Thu, 29 Nov 2007 00:21:13 +0000 (16:21 -0800)]
Fix boot problem with iSeries lacking hugepage support
Ordinarily the size of a pageblock is determined at compile-time based on the
hugepage size. On PPC64, the hugepage size is determined at runtime based on
what is supported by the machine. With legacy machines such as iSeries that
do not support hugepages, HPAGE_SHIFT is 0. This results in pageblock_order
being set to -PAGE_SHIFT and a crash results shortly afterwards.
This patch adds a function to select a sensible value for pageblock order by
default when HUGETLB_PAGE_SIZE_VARIABLE is set. It checks that HPAGE_SHIFT
is a sensible value before using the hugepage size; if it is not MAX_ORDER-1
is used.
This is a fix for 2.6.24.
Credit goes to Stephen Rothwell for identifying the bug and testing candidate
patches. Additional credit goes to Andy Whitcroft for spotting a problem
with respects to IA-64 before releasing. Additional credit to David Gibson
for testing with the libhugetlbfs test suite.
Signed-off-by: Mel Gorman <mel@csn.ul.ie> Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
- Limit video memory size to avoid crossing a 256 MiB boundary in IOIF space.
- Pass the actual amount of video memory used to lv1_gpu_memory_allocate().
David Brownell [Thu, 29 Nov 2007 00:21:10 +0000 (16:21 -0800)]
atmel_spi: label GPIOs better
Make the atmel_spi driver label GPIOs according to the device for which
they're acting as a chipselect. This way the debugfs dump of gpio state is
more informative.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Andy Whitcroft [Thu, 29 Nov 2007 00:21:06 +0000 (16:21 -0800)]
update checkpatch.pl to version 0.12
This version brings a new terse output mode as well as many improvements to
the unary detection and bare type regcognition. It also brings the usual
updates for false positives, though these seem to be slowing markedly
now that the unary detector is no longer just putting its finger in the
air and guessing. Of note:
- new --terse mode producing a single line per report
- loosening of the block brace checks
- new checks for enum/union/struch brace placements
- hugely expanded "bare type" detection
- checks for inline usage
- better handling of already open comment blocks
- handle patches which introduce or remove lines without newlines
Andy Whitcroft (19):
Version: 0.12
style fixes as spotted by checkpatch
add a --terse options of a single line of output per report
block brace checks should only apply for single line blocks
all new bare type detector
check spacing for open braces with enum, union and struct
check for LINUX_VERSION_CODE
macros definition bracketing checks need to ignore -ve context
clean up the mail-back mode, -q et al
expand possible type matching to declarations
allow const and sparse annotations on possible types
handle possible types as regular types everywhere
prefer plain inline over __inline__ and __inline
all new open comment detection
fix up conditional extraction for if assignment checks
add const to the possible type matcher
unary checks: a for loop is a conditional too
possible types: detect function pointer definitions
handle missind newlines at end of file, report addition
Signed-off-by: Andy Whitcroft <apw@shadowen.org> Acked-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-2.6:
sysfs: fix off-by-one error in fill_read_buffer()
kobject: two typo fixes
UIO: add UIO documentation target to DocBook Makefile
UIO: fix up the UIO documentation
create /sys/.../power when CONFIG_PM is set
allow LEGACY_PTYS to be set to 0
Ben Dooks [Mon, 19 Nov 2007 22:28:14 +0000 (22:28 +0000)]
USB: s3c2410 gadget: allow sharing of vbus irq
If another driver wants to claim the vbus pin, say
to notify the user of an connect/disconnect then allow
the IRQ to be shared by specifiying IRQ_SHARED in the
flags.
Signed-off-by: Ben Dooks <ben-linux@fluff.org> Acked-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Mon, 26 Nov 2007 15:23:05 +0000 (10:23 -0500)]
USB: usb-storage: unusual_devs entry for JetFlash TS1GJF2A
This patch (as1018) adds an unusual_devs entry for the JetFlash
TS1GJF2A. This device doesn't like read requests for more than 188
sectors. Setting max_sectors down to 64 is overkill, but at least
it will work without errors.
For the torturous debugging history, see this thread:
David Brownell [Wed, 14 Nov 2007 00:22:30 +0000 (16:22 -0800)]
USB: fix up EHCI startup synchronization
A recent patch added software synchronization during EHCI startup,
so ports aren't switched away from the companion controllers after
resets have started. This patch adds a short delay letting hardware
finish that port switching before any new resets begin ... so both
ends of that hardware race window are closed.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Cc: Dave Miller <davem@davemloft.net> Cc: Dely Sy <dely.l.sy@intel.com> Cc: stable <stable@kernel.org> Cc: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Tue, 6 Nov 2007 20:01:52 +0000 (15:01 -0500)]
USB: uevent environment key fix
This patch (as1010) was written by both Kay Sievers and me. It solves
the problem of duplicated keys in USB uevent structures by refactoring
the uevent subroutines, taking advantage of the way the hotplug core
calls uevent handlers for the device's bus and for the device's type.
Keys needed for both USB-device and USB-interface events are added in
usb_uevent(), which is the bus handler. Keys appropriate only for
USB-device or USB-interface events are added in usb_dev_uevent() or
usb_if_uevent() respectively, the type handlers.
In addition, unnecessary tests for NULL pointers are removed as are
duplicated debugging log statements.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Tue, 6 Nov 2007 16:43:42 +0000 (11:43 -0500)]
USB: keep track of whether interface sysfs files exist
This patch (as1009) solves the problem of multiple registrations for
USB sysfs files in a more satisfying way than the existing code. It
simply adds a flag to keep track of whether or not the files have been
created; that way the files can be created or removed as needed.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Per the maintainer of the usbserial/sierra.c driver, the patch below adds
a new id to the list of supported cards for the sierra driver. Tested and
working for me on Fedora 8, kernel 2.6.23 and on the more recent sierra.c
available in
http://www.sierrawireless.com/resources/support/Software/Linux/v.1.2.6b(kernel2.6.21).zip
Hardware is a MiniPCI card in a Lenovo T61p.
Signed-off-by: Andrew Gilmore <agilmore@wirelessbeehive.com> Cc: Kevin Lloyd <linux@sierrawireless.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Stern [Wed, 21 Nov 2007 23:13:10 +0000 (15:13 -0800)]
USB HCD: avoid duplicate local_irq_disable()
Arnd Bergmann wrote:
usb_hcd_flush_endpoint() has a retry loop that starts with a spin_lock_irq(),
but only gives up the spinlock, not the irq_disable before jumping to the
rescan label.
Alan Stern:
I agree with your sentiment, but it would be better to solve this
problem without using local_irq_disable().
Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Cc: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
David Brownell [Wed, 7 Nov 2007 20:59:54 +0000 (12:59 -0800)]
USB: remove USB HUB entry from MAINTAINERS
Digging through old mail, I found a note about needing to remove the
separate entry for the USB HUB driver. It's not been separable from
usbcore (host side!) since quite early in the 2.4 kernel series.
And Johanness certainly isn't involved with it any more.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Mike Pagano [Thu, 1 Nov 2007 17:53:43 +0000 (10:53 -0700)]
USB: add support for an older firmware revision for the Nikon D200
This is a resubmission of the patch to upgrade the unusual_devs.h file to
support an older firmware revision of the Nikon D200. This patch includes the
requested /proc/bus/usb/devices information.
Pete Zaitcev [Wed, 31 Oct 2007 22:59:30 +0000 (15:59 -0700)]
USB: FIx locks and urb->status in adutux (updated)
Two main issues fixed here are:
- An improper use of in-struct lock to protect an open count
- Use of urb status for -EINPROGRESS
Also, along the way:
- Change usb_unlink_urb to usb_kill_urb. Apparently there's no need
to use usb_unlink_urb whatsoever in this driver, and the old use of
usb_kill_urb was outright racy (it unlinked and immediately freed).
- Fix indentation in adu_write. Looks like it was damaged by a script.
- Vitaly wants -EBUSY on multiply opens.
- bInterval was taken from a wrong endpoint.
Alan Stern [Fri, 16 Nov 2007 16:58:15 +0000 (11:58 -0500)]
USB: power-management documenation update
This patch (as1014) was partly written by Tilman Schmidt. It
clarifies the USB power-management documentation by explaining that
when a disconnect occurs, a suspend method call might not be followed
by either a resume or a reset_resume call.
Phil Endecott [Mon, 29 Oct 2007 20:40:30 +0000 (20:40 +0000)]
USB: Fix signr comment in usbdevice_fs.h
This trivial documentation patch corrects a comment in usbdevice_fs.h; it
previously suggested that the signal would only be sent on error, but I am
told that it is sent on both successful and unsuccessful completion, and
that zero indicates that no signal should be sent.
Signed-off-by: Phil Endecott <spam_from_usb_devel@chezphil.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Borislav Petkov [Sun, 28 Oct 2007 12:24:16 +0000 (13:24 +0100)]
usbserial: fix inconsistent lock state
In commit acd2a847e7fee7df11817f67dba75a2802793e5d usb_serial_generic_write()
disables interrupts when taking &port->lock which is also taken in
usb_serial_generic_read_bulk_callback() resulting in an inconsistent lock state
due to the latter not disabling interrupts on the local cpu. Fix that by
disabling interrupts in the latter call site also.
This patch (as1000) sets the SCSI allow_restart flag for USB disk
devices. In theory this should never hurt, and there definitely are
devices out there (such as the Seagate 250-GB external drive) which
need the flag to be set.
Because according to the specification of the sysfs and the implement of
the show methods, the show methods return the number of bytes which would
be generated for the given input, excluding the trailing null.So if the
return value of the show methods equals PAGE_SIZE - 1, the buffer is full
in fact. And if the return value equals PAGE_SIZE, the resulting string
was already truncated,or buffer overflow occurred.
This patch fixes an off-by-one error in fill_read_buffer.
Hans J Koch [Mon, 26 Nov 2007 21:03:29 +0000 (22:03 +0100)]
UIO: fix up the UIO documentation
Remove references to the old uio_dummy demo module from UIO documentation.
Add a small paragraph to make it clearer that UIO is not a universal driver
interface.
Signed-off-by: Hans J Koch <hjk@linutronix.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Daniel Drake [Wed, 21 Nov 2007 22:55:18 +0000 (14:55 -0800)]
create /sys/.../power when CONFIG_PM is set
The CONFIG_SUSPEND changes in 2.6.23 caused a regression under certain
configuration conditions (SUSPEND=n, USB_AUTOSUSPEND=y) where all USB
device attributes in sysfs (idVendor, idProduct, ...) silently disappeared,
causing udev breakage and more.
The cause of this is that the /sys/.../power subdirectory is now only
created when CONFIG_PM_SLEEP is set, however, it should be created whenever
CONFIG_PM is set to handle the above situation. The following patch fixes
the regression.
Signed-off-by: Daniel Drake <dsd@gentoo.org> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: stable <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kay Sievers [Wed, 14 Nov 2007 22:39:42 +0000 (23:39 +0100)]
allow LEGACY_PTYS to be set to 0
The count of legacy pty devices can be set by a kernel commandline
parameter. For the distro kernel, we would like to disable all pty's
by default, but keep the opportunity to request devices on the kernel
commandline.
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Acked-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Hugh Dickins [Wed, 28 Nov 2007 18:57:12 +0000 (18:57 +0000)]
prep_zero_page: remove bogus BUG_ON
2.6.11 gave __GFP_ZERO's prep_zero_page a bogus "highmem may have to wait"
assertion. Presumably added under the misconception that clear_highpage
uses nonatomic kmap; but then and now it uses kmap_atomic, so no problem.
Hugh Dickins [Wed, 28 Nov 2007 18:55:10 +0000 (18:55 +0000)]
tmpfs: restore missing clear_highpage
tmpfs was misconverted to __GFP_ZERO in 2.6.11. There's an unusual case in
which shmem_getpage receives the page from its caller instead of allocating.
We must cover this case by clear_highpage before SetPageUptodate, as before.
* git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched:
sched: clean up kernel/sched_stat.h
sched: clean up overlong line in kernel/sched_debug.c
sched: clean up, move __sched_text_start/end to sched.h
sched: clean up sd_alloc_ctl_cpu_table() definition
softlockup: fix false positives on CONFIG_NOHZ
Mark Fasheh [Tue, 20 Nov 2007 19:56:39 +0000 (11:56 -0800)]
ocfs2: reverse inline-data truncate args
ocfs2_truncate() and ocfs2_remove_inode_range() had reversed their "set
i_size" arguments to ocfs2_truncate_inline(). Fix things so that truncate
sets i_size, and punching a hole ignores it.
This exposed a problem where punching a hole in an inline-data file wasn't
updating the page cache, so fix that too.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Mark Fasheh [Thu, 8 Nov 2007 00:35:14 +0000 (16:35 -0800)]
ocfs2: Remove bug statement in ocfs2_dentry_iput()
The existing bug statement didn't take into account unhashed dentries which
might not have a cluster lock on them. This could happen if a node exporting
the file system via NFS is rebooted, re-exported to nfs clients and then
unmounted. It's fine in this case to not have a dentry cluster lock.
Just remove the bug statement and replace it with an error print, which
does the proper checks. Though we want to know if something has happened
which might have prevented a cluster lock from being created, it's
definitely not necessary to panic the machine for this.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Jan Kara [Tue, 13 Nov 2007 18:59:33 +0000 (19:59 +0100)]
[PATCH] ocfs2: Remove expensive bitmap scanning
Enable expensive bitmap scanning only if DEBUG option is enabled.
The bitmap scanning quite loads the CPU and on my machine the write
throughput of dd if=/dev/zero of=/ocfs2/file bs=1M count=500 conv=sync
improves from 37 MB/s to 45.4 MB/s in local mode...
Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Mark Fasheh [Tue, 20 Nov 2007 02:40:16 +0000 (18:40 -0800)]
ocfs2: log valid inode # on bad inode
If the inode block isn't valid then we don't want to print the value from
that, instead print the block number which was passed in (which should
always be correct). Also, turn this into a debug print for now - folks who
hit an actual problem always have other logs indicating what the source is.
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
Linus Torvalds [Tue, 27 Nov 2007 22:27:56 +0000 (14:27 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
KVM: SVM: Fix FPU leak while emulating clts
KVM: SVM: Unload guest fpu on vcpu_put()
KVM: x86 emulator: Use emulator_write_emulated and not emulator_write_std
KVM: x86 emulator: fix the saving of of the eip value
KVM: x86 emulator: fix JMP_REL
Linus Torvalds [Tue, 27 Nov 2007 22:20:51 +0000 (14:20 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
IB/iser: Add missing counter increment in iser_data_buf_aligned_len()
IB/ehca: Fix static rate regression
mlx4_core: Fix state check in mlx4_qp_modify()
IB/ipath: Normalize error return codes for posting work requests
IB/ipath: Fix offset returned to ibv_modify_srq()
IB/ipath: Fix error path in QP creation
IB/ipath: Fix offset returned to ibv_resize_cq()
Linus Torvalds [Tue, 27 Nov 2007 22:20:35 +0000 (14:20 -0800)]
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: adds the context menu key (HUT GenDesc 0x84)
Input: add definitions for frame forward and frame back keys
Input: bf54x-keys - keypad does not exist on BF544 parts
Input: gpio-keys - request and configure GPIOs
Input: i8042 - add i8042.noloop quirk for MS Virtual Machine
Sonypi: use synchronize_irq instead of sycnronize_sched
sonypi: fit input devices into sysfs tree
sony-laptop: fit input devices into sysfs tree
Andrew Morton [Tue, 27 Nov 2007 20:35:56 +0000 (21:35 +0100)]
amd74xx: arm hack
drivers/ide/pci/amd74xx.c: In function `init_hwif_amd74xx':
drivers/ide/pci/amd74xx.c:387: error: implicit declaration of function `pci_get_legacy_ide_irq'
Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
projects / linux-2.6 / log