| Commit message (Collapse) | Author | Age |
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Fix the comments -- mostly the improper and/or missing descriptions
of function parameters.
Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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Add a missing iput when cleaning up if v9fs_get_inode
fails after returning a valid inode.
Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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Check if v9fs_fid_add was successful or not based on its
return value.
Signed-off-by: Abhishek Kulkarni <adkulkar@umail.iu.edu>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus:
MIPS: Fix HPAGE_SIZE redefinition
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This patch fixes warnings like this:
CC fs/proc/meminfo.o
In file included from /work/linux/include/linux/mmzone.h:20,
from /work/linux/include/linux/gfp.h:4,
from /work/linux/include/linux/mm.h:8,
from /work/linux/fs/proc/meminfo.c:5:
/work/linux/arch/mips/include/asm/page.h:36:1: warning: "HPAGE_SIZE" redefined
In file included from /work/linux/fs/proc/meminfo.c:2:
/work/linux/include/linux/hugetlb.h:107:1: warning: this is the location of the previous definition
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-by: David Daney <ddaney@caviumnetworks.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
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* 'for-linus' of git://oss.sgi.com/xfs/xfs:
xfs: fix locking in xfs_iget_cache_hit
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The locking in xfs_iget_cache_hit currently has numerous problems:
- we clear the reclaim tag without i_flags_lock which protects
modifications to it
- we call inode_init_always which can sleep with pag_ici_lock
held (this is oss.sgi.com BZ #819)
- we acquire and drop i_flags_lock a lot and thus provide no
consistency between the various flags we set/clear under it
This patch fixes all that with a major revamp of the locking in
the function. The new version acquires i_flags_lock early and
only drops it once we need to call into inode_init_always or before
calling xfs_ilock.
This patch fixes a bug seen in the wild where we race modifying the
reclaim tag.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Felix Blyakher <felixb@sgi.com>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
Signed-off-by: Felix Blyakher <felixb@sgi.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6:
security: define round_hint_to_min in !CONFIG_SECURITY
Security/SELinux: seperate lsm specific mmap_min_addr
SELinux: call cap_file_mmap in selinux_file_mmap
Capabilities: move cap_file_mmap to commoncap.c
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Fix the header files to define round_hint_to_min() and to define
mmap_min_addr_handler() in the !CONFIG_SECURITY case.
Built and tested with !CONFIG_SECURITY
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Currently SELinux enforcement of controls on the ability to map low memory
is determined by the mmap_min_addr tunable. This patch causes SELinux to
ignore the tunable and instead use a seperate Kconfig option specific to how
much space the LSM should protect.
The tunable will now only control the need for CAP_SYS_RAWIO and SELinux
permissions will always protect the amount of low memory designated by
CONFIG_LSM_MMAP_MIN_ADDR.
This allows users who need to disable the mmap_min_addr controls (usual reason
being they run WINE as a non-root user) to do so and still have SELinux
controls preventing confined domains (like a web server) from being able to
map some area of low memory.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Currently SELinux does not check CAP_SYS_RAWIO in the file_mmap hook. This
means there is no DAC check on the ability to mmap low addresses in the
memory space. This function adds the DAC check for CAP_SYS_RAWIO while
maintaining the selinux check on mmap_zero. This means that processes
which need to mmap low memory will need CAP_SYS_RAWIO and mmap_zero but will
NOT need the SELinux sys_rawio capability.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: James Morris <jmorris@namei.org>
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Currently we duplicate the mmap_min_addr test in cap_file_mmap and in
security_file_mmap if !CONFIG_SECURITY. This patch moves cap_file_mmap
into commoncap.c and then calls that function directly from
security_file_mmap ifndef CONFIG_SECURITY like all of the other capability
checks are done.
Signed-off-by: Eric Paris <eparis@redhat.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Signed-off-by: James Morris <jmorris@namei.org>
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The inotify_add_watch man page specifies that inotify_add_watch() will
return a non-negative integer. However, historically the inotify
watches started at 1, not at 0.
Turns out that the inotifywait program provided by the inotify-tools
package doesn't properly handle a 0 watch descriptor. In 7e790dd5 we
changed from starting at 1 to starting at 0. This patch starts at 1,
just like in previous kernels, but also just like in previous kernels
it's possible for it to wrap back to 0. This preserves the kernel
functionality exactly like it was before the patch (neither method broke
the spec)
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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In f44aebcc the tail drop logic of events with no file backing
(q_overflow and in_ignored) was reversed so IN_IGNORED events would
never be tail dropped. This now means that Q_OVERFLOW events are NOT
tail dropped. The fix is to not tail drop IN_IGNORED, but to tail drop
Q_OVERFLOW.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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inotify decides if private data it passed to get added to an event was
used by checking list_empty(). But it's possible that the event may
have been dequeued and the private event removed so it would look empty.
The fix is to use the return code from fsnotify_add_notify_event rather
than looking at the list.
Signed-off-by: Eric Paris <eparis@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* master.kernel.org:/home/rmk/linux-2.6-arm: (37 commits)
ARM: 5673/1: U300 fix initsection compile warning
ARM: Fix broken highmem support
mx31moboard: invert sdhc ro signal sense
ARM: S3C24XX: Fix clkout mpx error
ARM: S3C64XX: serial: Fix a typo in Kconfig
IXP4xx: Fix IO_SPACE_LIMIT for 2.6.31-rc core PCI changes
OMAP3: RX51: Updated rx51_defconfig
OMAP2/3: mmc-twl4030: Free up MMC regulators while cleaning up
OMAP3: RX51: Define TWL4030 USB transceiver in board file
OMAP3: Overo: Fix smsc911x platform device resource value
OMAP3: Fix omap3 sram virtual addres overlap vmalloc space after increasing vmalloc size
OMAP2/3: DMA errata correction
OMAP: Fix testing of cpu defines for mach-omap1
OMAP3: Overo: add missing pen-down GPIO definition
OMAP: GPIO: clear/restore level/edge detect settings on mask/unmask
OMAP3: PM: Fix wrong sequence in suspend.
OMAP: PM: CPUfreq: obey min/max settings of policy
OMAP2/3/4: UART: allow in-order port traversal
OMAP2/3/4: UART: Allow per-UART disabling wakeup for serial ports
OMAP3: Fixed crash bug with serial + suspend
...
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The u300_init_check_chip() function was not properly tagged with
the __init macro and provided a initsection mismatch on
compilation.
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Bug correction: CLK Outputs cannot have XTAL as parent
Signed-off-by: Davide Rizzo <elpa.rizzo@gmail.com>
[ben-linux@fluff.org: updated patch subject]
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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The typo causes drivers/serial/s3c6400.c not being built for s3c6400 platform.
Signed-off-by: Ramax Lo <ramaxlo@gmail.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
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Small confusion with our hardware engineer, the WP signal (RO) is
active low on our boards, the signal has to inverted.
This is a pretty straightforward patch, it could even go to -rc,
but if not, then push it for 2.6.32.
Signed-off-by: Valentin Longchamp <valentin.longchamp@epfl.ch>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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SPI pins are now allocated in pcm037.c, remove them from EET.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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Currently, highmem is selectable, and you can request an increased
vmalloc area. However, none of this has any effect on the memory
layout since a patch in the highmem series was accidentally dropped.
Moreover, even if you did want highmem, all memory would still be
registered as lowmem, possibly resulting in overflow of the available
virtual mapping space.
The highmem boundary is determined by the highest allowed beginning
of the vmalloc area, which depends on its configurable minimum size
(see commit 60296c71f6c5063e3c1f1d2619ca0b60940162e7 for details on
this).
We should create mappings and initialize bootmem only for low memory,
while the zone allocator must still be told about highmem.
Currently, memory nodes which are completely located in high memory
are not supported. This is not a huge limitation since systems
relying on highmem support are unlikely to have discontiguous memory
with large holes.
[ A similar patch was meant to be merged before commit 5f0fbf9ecaf3
and be available in Linux v2.6.30, however some git rebase screw-up
of mine dropped the first commit of the series, and that goofage
escaped testing somehow as well. -- Nico ]
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Reviewed-by: Nicolas Pitre <nico@marvell.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/chris/linux-2.6
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2.6.31-rc kernels don't boot on my ixp4xx box (ds101), because the libata
driver doesn't find the PCI IDE controller any more. 2.6.30 was fine.
I traced this to a PCI update (1f82de10d6b1d845155363c895c552e61b36b51a)
in 2.6.30-git19. Diffing the kernel boot logs from 2.6.30-git18 and
2.6.30-git19 illustrates the breakage:
> --- dmesg-2.6.30-git18 2009-08-04 01:45:22.000000000 +0200
> +++ dmesg-2.6.30-git19 2009-08-04 01:45:46.000000000 +0200
> @@ -26,6 +26,13 @@
> pci 0000:00:02.2: PME# supported from D0 D1 D2 D3hot
> pci 0000:00:02.2: PME# disabled
> PCI: bus0: Fast back to back transfers disabled
> +pci 0000:00:01.0: BAR 0: can't allocate I/O resource [0x10000-0xffff]
> +pci 0000:00:01.0: BAR 1: can't allocate I/O resource [0x10000-0xffff]
> +pci 0000:00:01.0: BAR 2: can't allocate I/O resource [0x10000-0xffff]
> +pci 0000:00:01.0: BAR 3: can't allocate I/O resource [0x10000-0xffff]
> +pci 0000:00:01.0: BAR 4: can't allocate I/O resource [0x10000-0xffff]
> +pci 0000:00:02.0: BAR 4: can't allocate I/O resource [0x10000-0xffff]
> +pci 0000:00:02.1: BAR 4: can't allocate I/O resource [0x10000-0xffff]
> bio: create slab <bio-0> at 0
> SCSI subsystem initialized
> NET: Registered protocol family 2
> @@ -44,11 +51,7 @@
> console [ttyS0] enabled
> serial8250.0: ttyS1 at MMIO 0xc8001000 (irq = 13) is a XScale
> Driver 'sd' needs updating - please use bus_type methods
> -PCI: enabling device 0000:00:01.0 (0140 -> 0141)
> -scsi0 : pata_artop
> -scsi1 : pata_artop
> -ata1: PATA max UDMA/100 cmd 0x1050 ctl 0x1060 bmdma 0x1040 irq 28
> -ata2: PATA max UDMA/100 cmd 0x1058 ctl 0x1064 bmdma 0x1048 irq 28
> +pata_artop 0000:00:01.0: no available native port
> Using configured DiskOnChip probe address 0x50000000
> DiskOnChip found at 0x50000000
> NAND device: Manufacturer ID: 0x98, Chip ID: 0x73 (Toshiba NAND 16MiB 3,3V 8-bit)
The specific change in 1f82de10d6b1d845155363c895c552e61b36b51a responsible
for this failure turned out to be the following:
> --- a/drivers/pci/probe.c
> +++ b/drivers/pci/probe.c
> @@ -193,7 +193,7 @@ int __pci_read_base(struct pci_dev *dev, enum pci_bar_type type,
> res->flags |= pci_calc_resource_flags(l) | IORESOURCE_SIZEALIGN;
> if (type == pci_bar_io) {
> l &= PCI_BASE_ADDRESS_IO_MASK;
> - mask = PCI_BASE_ADDRESS_IO_MASK & 0xffff;
> + mask = PCI_BASE_ADDRESS_IO_MASK & IO_SPACE_LIMIT;
> } else {
> l &= PCI_BASE_ADDRESS_MEM_MASK;
> mask = (u32)PCI_BASE_ADDRESS_MEM_MASK;
Every arch except arm's ixp4xx defines IO_SPACE_LIMIT as an all-bits-one
bitmask, typically -1UL but sometimes only a 16-bit 0x0000ffff. But ixp4xx
defines it as 0xffff0000, which is now causing the PCI failures.
Russell King noted that ixp4xx has 64KB PCI IO space, so IO_SPACE_LIMIT
should be 0x0000ffff. This patch makes that change, which fixes the PCI
failures on my ixp4xx box.
Signed-off-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Krzysztof Hałasa <khc@pm.waw.pl>
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git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-omap-pm
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Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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If IRQ triggering is enabled, it can trigger a pending interrupt
even for masked interrupts. Any pending GPIO interrupts can
prevent the powerdomain from hitting retention.
Problem found, reported and additional review and testing by Chunquiu
Wang.
Tested-by: Chunquiu Wang <cqwang@motorola.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Powerdomain previous state is checked after restoring new states in
suspend. This patch fixes this problem.
Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Use the min/max settings from CPUfreq policy rather than
processor defined min/max settings.
Without this patch, it's possible to scale frequency outside
the current policy range.
Signed-off-by: Eero Nurkkala <ext-eero.nurkkala@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Use list_add_tail() when adding discovered UART ports. This is so
traversal using list_for_each_entry() will traverse the list in the
order they were found.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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This patch causes the OMAP uarts to honor the sysfs power/wakeup file
for IOPAD wakeups. Before the OMAP was always woken up from off mode
on a rs232 signal change. This patch also creates a different
platform device for each serial port so that the wakeup properties can
be control per port.
By default, IOPAD wakeups are enabled for each UART. To disable,
# echo disabled > /sys/devices/platform/serial8250.0/power/wakeup
Where serial8250.0 can be replaced by .1, or .2 to control the other
ports.
Original idea and original patch from Russ Dill <russ.dill@gmail.com>
Cc: Russ Dill <russ.dill@gmail.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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It was possible for an unhandled interrupt to occur if there was incoming
serial traffic during wakeup from suspend. This was caused by the code
in arch-arm/mach-omap2/serial.c keeping interrupt enabled all the time,
but not acking its interrupts. Applies on top of PM branch.
Use the PM begin/end hooks to ensure that the "serial idle" interrupts
are disabled during the suspend path. Also, since begin/end hooks are
now used, use the suspend_state that is passed in the begin hook instead
of the enter hook as per the platform_suspend_ops docs.
Signed-off-by: Tero Kristo <tero.kristo@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Streamline the OMAP4 special IRQ assignments by putting inside
normal init loop instead of having a separate loop.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Signed-off-by: Jouni Hogander <jouni.hogander@nokia.com>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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By default, prevent functional wakeups from inside a module from
waking up the IVA2. Let DSP Bridge code handle this when loaded.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Any pending reset flags can prevent retention. Ensure they are all
cleared during boot.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Any pending PRCM interrupts can prevent retention. Ensure
they are cleared during boot.
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
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Fix two bugs in the OMAP3 clock tree pertaining to the SSI, DSS,
USBHOST, and HSOTGUSB devices. These devices are both interconnect
initiators and targets. Without this patch, clk_enable()s on clocks for
these modules can be very high latency (potentially up to ~200
milliseconds) and message such as the following are generated:
Clock usbhost_48m_fck didn't enable in 100000 tries
Two bugs are fixed by this patch. First, OMAP hardware only supports
target CM_IDLEST register bits on ES2+ chips and beyond. ES1 chips
should not wait for these clocks to enable. So, split the appropriate
clocks into ES1 and ES2+ variants, so that kernels running on ES1
devices won't try to wait.
Second, the current heuristic in omap2_clk_dflt_find_idlest() will
fail for these clocks. It assumes that the CM_IDLEST bit to wait upon
is the same as the CM_*CLKEN bit, which is false[1]. Fix by
implementing custom clkops .find_idlest function pointers for the
appropriate clocks that return the correct slave IDLEST bit shift.
This was originally fixed in the linux-omap kernel during 2.6.29 in a
slightly different manner[2][3].
In the medium-term future, all of the module IDLEST code will
eventually be moved to the omap_hwmod code.
Problem reported by Jarkko Nikula <jhnikula@gmail.com>:
http://marc.info/?l=linux-omap&m=124306184903679&w=2
...
1. See for example 34xx TRM Revision P Table 4-213 and 4-217 (for the
DSS case).
2. http://www.spinics.net/lists/linux-omap/msg05512.html et seq.
3. http://lkml.indiana.edu/hypermail/linux/kernel/0901.3/01498.html
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Jarkko Nikula <jhnikula@gmail.com>
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OMAP2430 I2CHS CM_IDLEST bits are in CM_IDLEST1_CORE, but the CM_*CLKEN bits
are in CM_{I,F}CLKEN2_CORE [1]. Fix by implementing a custom clkops
.find_idlest function to return the correct slave IDLEST register.
...
1. OMAP2430 Multimedia Device Package-on-Package (POP) Silicon Revision 2.1
(Rev. V) Technical Reference Manual, tables 4-99 and 4-105.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Some OMAP2/3 hardware modules have CM_IDLEST attributes that are not
handled by the current omap2_wait_clock_ready() code. In preparation
for patches that fix the unusual devices, rename the function
omap2_wait_clock_ready() to omap2_wait_module_ready() and split it
into three parts:
1. A clkops-specific companion clock return function (by default,
omap2_clk_dflt_find_companion())
2. A clkops-specific CM_IDLEST register address and bit shift return
function (by default, omap2_clk_dflt_find_idlest())
3. Code to wait for the CM to indicate that the module is ready
(omap2_cm_wait_idlest())
Clocks can now specify their own custom find_companion() and find_idlest()
functions; used in subsequent patches.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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The clock stabilization delay post a M2 divider change is needed
even before a SDRC interface clock re-enable and not only before
jumping back to SDRAM.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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This patch fixes a bug in the CORE dpll scaling sequence which was
errouneously clearing some bits in the SDRC DLLA CTRL register and
hence causing a freeze. The issue was observed only on platforms
which scale CORE dpll to < 83Mhz and hence program the DLL in fixed
delay mode.
Issue reported by Limei Wang <E12499@motorola.com>, with debugging
assistance from Richard Woodruff <r-woodruff2@ti.com> and Girish
Ghongdemath <girishsg@ti.com>.
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Cc: Limei Wang <E12499@motorola.com>
Cc: Richard Woodruff <r-woodruff2@ti.com>
Cc: Girish Ghongdemath <girishsg@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
[paul@pwsan.com: updated patch description to include collaboration credits]
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Stop setting SDRC_POWER.PWDENA on boot. There is a nasty erratum
(34xx erratum 1.150) that can cause memory corruption if PWDENA is
enabled.
Based originally on a patch from Samu P. Onkalo <samu.p.onkalo@nokia.com>.
Tested on BeagleBoard rev C2.
Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Samu P. Onkalo <samu.p.onkalo@nokia.com>
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This patches ensures the MUX settings are correct for the SDRC
CKE signals to SDRAM. This allows the self-refresh to work when
2 chip-selects are in use.
A warning is thrown away in case the initial muxing is incorrect,
in order to track faulty or old-dated bootloaders.
Note: The CONFIG_OMAP_MUX and CONFIG_OMAP_MUX_WARNINGS options
must be enabled for the mux code to have effect.
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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Some OMAP3 boards (Beagle Cx, Overo, RX51, Pandora) have 2
SDRAM parts connected to the SDRC.
This patch adds the following:
- add a new argument of type omap_sdrc_params struct*
to omap2_init_common_hw and omap2_sdrc_init for the 2nd CS params
- adapted the OMAP boards files to the new prototype of
omap2_init_common_hw
- add the SDRC 2nd CS registers offsets defines
- adapt the sram sleep code to configure the SDRC for the 2nd CS
Note: If the 2nd param to omap2_init_common_hw is NULL, then the
parameters are not programmed into the SDRC CS1 registers
Tested on 3430 SDP and Beagleboard rev C2 and B5, with
suspend/resume and frequency changes (cpufreq).
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
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