31 Jan, 2009
22 commits
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As the pata-rb532-cf driver calls gpio_direction_input(), the calls to
rb532_gpio_set_func() and rb532_gpio_direction_input() are not needed since
the alternate function is automatically being disabled when changing the
GPIO pin direction.
The later two calls to rb532_gpio_set_{ilevel,istat}() are implicitly being
done by the IRQ initialisation of pata-rb532-cf.Signed-off-by: Phil Sutter
Signed-off-by: Ralf Baechle -
When a driver calls gpio_set_direction_{input,output}(), it obviously
doesn't want the alternate function for that pin to be active (as the
direction would not matter in that case). This patch ensures alternate
function is disabled when the direction is being changed.Signed-off-by: Phil Sutter
Signed-off-by: Ralf Baechle -
Interrupt Group 4 mapps the GPIO pins enabled as interrupt sources;
add defines to make this clear when addressing them later in code.The mapped GPIOs support triggering on either level high or low. To
achieve this, the set_type() function calls rb532_gpio_set_ilevel() for
interrupts of the above mentioned group.As there is no way to alter the triggering characteristics of the other
interrupts, accept level triggering on status high only. (This is just a
guess; but as the system boots fine and interrupt-driven devices (e.g.
serial console) work with no implications, it seems to be right.)To clear a GPIO mapped IRQ, the source has to be cleared (i.e., the
interrupt status bit of the corresponding GPIO pin). This is done inside
rb532_disable_irq().After applying these changes I could undo most of my former "fixes" to
pata-rb532-cf. Particularly all interrupt handling can be done
generically via set_irq_type() as it was before.Signed-off-by: Phil Sutter
Signed-off-by: Ralf Baechle -
The code is rather based on trial-and-error than knowledge. Verified Via
Rhine functionality in PIO as well as MMIO mode.[Looks sane -- Ralf]
Signed-off-by: Phil Sutter
Tested-by: Florian Fainelli
Signed-off-by: Ralf Baechle -
The algorithm works unconditionally. If bitval is one, the first line is
a no op and the second line sets the bit at offset position. Vice versa,
if bitval is zero, the first line clears the bit at offset position and
the second line is a no op.Signed-off-by: Phil Sutter
Signed-off-by: Ralf Baechle -
The previous definition inadvertently omits Octeon which currently is
treated as an architecture variant separate from MIPS32 and MIPS64.Signed-off-by: David Daney
Signed-off-by: Ralf Baechle -
If a context switch occurred between the watch exception and reading the
watch registers, it would be possible for the new process to corrupt their
state. Enabling interrupts only after the watch registers are read avoids
this race.Signed-off-by: David Daney
Signed-off-by: Ralf Baechle -
This fixes the ptrace ABI for watch registers, and should allow 64bit
kernels to use the watch register support.Signed-off-by: David Daney
Signed-off-by: Ralf Baechle -
Add platform support to use rtc-tx4939 driver.
Signed-off-by: Atsushi Nemoto
Signed-off-by: Ralf Baechle -
Signed-off-by: Ralf Baechle
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The special IP27 DMA code selected by DMA_IP27 has been removed a while
ago turning DMA_IP27 into almost a nop. Also fixup the broken logic of
its last users memcpy.S and memcpy-inatomic.s.Signed-off-by: Ralf Baechle
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And while at it, convert all functions from macros to inline functions
for sanity.Signed-off-by: Ralf Baechle
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Signed-off-by: Huang Weiyi
Signed-off-by: Ralf Baechle -
This shaves of 1912 bytes of an IP27 defconfig kernel and avoids
unexpected overflow behaviour in atomic_sub_if_positive. Apply the same
changes to the atomic64_* functions for consistency.Signed-off-by: Ralf Baechle
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Original commit 1c0fe6e3bda0464728c23c8d84aa47567e8b716c.
Signed-off-by: Ralf Baechle
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See discussion e9c3a7c20901051031y528d0d31r18d44c5096c59e0@mail.gmail.com.
Signed-off-by: Ralf Baechle
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Signed-off-by: Ralf Baechle
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Commit de33c8db5910cda599899dd431cc30d7c1018cbf ("Fix OOPS in
mmap_region() when merging adjacent VM_LOCKED file segments") unified
the vma merging of anonymous and file maps to just one place, which
simplified the code and fixed a use-after-free bug that could cause an
oops.But by doing the merge opportunistically before even having called
->mmap() on the file method, it now compares two different 'vm_flags'
values: the pre-mmap() value of the new not-yet-formed vma, and previous
mappings of the same file around it.And in doing so, it refused to merge the common file case, which adds a
marker to say "I can be made non-linear".This fixes it by just adding a set of flags that don't have to match,
because we know they are ok to merge. Currently it's only that single
VM_CAN_NONLINEAR flag, but at least conceptually there could be others
in the future.Reported-and-acked-by: Hugh Dickins
Cc: Lee Schermerhorn
Cc: Nick Piggin
Cc: Andrew Morton
Cc: Greg KH
Signed-off-by: Linus Torvalds -
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: Remove bogus BUG() check in ext4_bmap()
ext4: Fix building with EXT4FS_DEBUG
ext4: Initialize the new group descriptor when resizing the filesystem
ext4: Fix ext4_free_blocks() w/o a journal when files have indirect blocks
jbd2: On a __journal_expect() assertion failure printk "JBD2", not "EXT3-fs"
ext3: Add sanity check to make_indexed_dir
ext4: Add sanity check to make_indexed_dir
ext4: only use i_size_high for regular files
ext4: fix wrong use of do_div -
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
cfq-iosched: Allow RT requests to pre-empt ongoing BE timeslice
block: add sysfs file for controlling io stats accounting
Mark mandatory elevator functions in the biodoc.txt
include/linux: Add bsg.h to the Kernel exported headers
block: silently error an unsupported barrier bio
block: Fix documentation for blkdev_issue_flush()
block: add bio_rw_flagged() for testing bio->bi_rw
block: seperate bio/request unplug and sync bits
block: export SSD/non-rotational queue flag through sysfs
Fix small typo in bio.h's documentation
block: get rid of the manual directory counting in blktrace
block: Allow empty integrity profile
block: Remove obsolete BUG_ON
block: Don't verify integrity metadata on read error -
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (29 commits)
tulip: fix 21142 with 10Mbps without negotiation
drivers/net/skfp: if !capable(CAP_NET_ADMIN): inverted logic
gianfar: Fix Wake-on-LAN support
smsc911x: timeout reaches -1
smsc9420: fix interrupt signalling test failures
ucc_geth: Change uec phy id to the same format as gianfar's
wimax: fix build issue when debugfs is disabled
netxen: fix memory leak in drivers/net/netxen_nic_init.c
tun: Add some missing TUN compat ioctl translations.
ipv4: fix infinite retry loop in IP-Config
net: update documentation ip aliases
net: Fix OOPS in skb_seq_read().
net: Fix frag_list handling in skb_seq_read
netxen: revert jumbo ringsize
ath5k: fix locking in ath5k_config
cfg80211: print correct intersected regulatory domain
cfg80211: Fix sanity check on 5 GHz when processing country IE
iwlwifi: fix kernel oops when ucode DMA memory allocation failure
rtl8187: Fix error in setting OFDM power settings for RTL8187L
mac80211: remove Michael Wu as maintainer
... -
This fixes a crash observed when non-existant enable_ms function is
called for jsm driver.Signed-off-by: Scott Kilau
Signed-off-by: Paul Larson
Signed-off-by: Linus Torvalds
30 Jan, 2009
18 commits
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This patch adds the ability to pre-empt an ongoing BE timeslice when a RT
request is waiting for the current timeslice to complete. This reduces the
wait time to disk for RT requests from an upper bound of 4 (current value
of cfq_quantum) to 1 disk request.Applied Jens' suggeested changes to avoid the rb lookup and use !cfq_class_rt()
and retested.Latency(secs) for the RT task when doing sequential reads from 10G file.
| only RT | RT + BE | RT + BE + this patch
small (512 byte) reads | 143 | 163 | 145
large (1Mb) reads | 142 | 158 | 146Signed-off-by: Divyesh Shah
Signed-off-by: Jens Axboe -
This allows us to turn off disk stat accounting completely, for the cases
where the 0.5-1% reduction in system time is important.Signed-off-by: Jens Axboe
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biodoc.txt mentions that elevator functions marked with * are mandatory, but
no function is marked with *. Mark the 3 functions which should be
implemented by any io scheduler.Signed-off-by: Nikanth Karthikesan
Signed-off-by: Jens Axboe -
bsg.h in current form is perfectly suitable for user-mode
consumption. It is needed together with scsi/sg.h for applications
that want to interface with the bsg driver.Currently the few projects that use it would copy it over into
the projects. But that is not acceptable for projects that need
to provide source and devel packages for distros.This should also be submitted to stable 2.6.28 and 2.6.27 since bsg had
a stable API since these Kernels and distro users will need the header
for these kernels a swellSigned-off-by: Boaz Harrosh
Acked-by: FUJITA Tomonori
CC: stable@kernel.org
Signed-off-by: Jens Axboe -
This fixes a "regression" from 2.6.28, where the barrier probes that file
systems may do would trigger additional end request warnings in dmesg.Signed-off-by: Jens Axboe
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Signed-off-by: "Theodore Ts'o"
Signed-off-by: Jens Axboe -
The existing functions for checking bio->bi_rw are badly named. So lets
mirror what we do for bio->bi_flags testing, use a properly named
function so that it's immediately obvious what is being tested.Maintain compatability names for the old macros, eventually we'll get
rid of these.Signed-off-by: Jens Axboe
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Signed-off-by: Jens Axboe
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For some devices (i.e. CFA ATA) we can't reliably detect whether
the device is of rotational or non-rotational type so we need to
leave the final decision about this setting to the user-space.As a bonus do a minor CodingStyle fixup in queue_nomerges_store().
Suggested-by: Alan Cox
Signed-off-by: Bartlomiej Zolnierkiewicz
Signed-off-by: Jens Axboe -
Signed-off-by: Alberto Bertogli
Signed-off-by: Jens Axboe -
It can result in a stuck blktrace system, if --kill is used.
Signed-off-by: Jens Axboe
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Allow a block device to allocate and register an integrity profile
without providing a template. This allows DM to preallocate a profile
to avoid deadlocks during table reconfiguration.Signed-off-by: Martin K. Petersen
Signed-off-by: Jens Axboe -
Now that bio_vecs are no longer cleared in bvec_alloc_bs() the following
BUG_ON must go.Signed-off-by: Martin K. Petersen
Signed-off-by: Jens Axboe -
If we get an I/O error on a read request there is no point in doing a
verify pass on the integrity buffer. Adjust the completion path
accordingly.Signed-off-by: Martin K. Petersen
Signed-off-by: Jens Axboe -
The code to support journal-less ext4 operation added a BUG to
ext4_bmap() which fired if there was no journal and the
EXT4_STATE_JDATA bit was set in the i_state field. This caused
running the filefrag program (which uses the FIMBAP ioctl) to trigger
a BUG().The EXT4_STATE_JDATA bit is only used for ext4_bmap(), and it's
harmless for the bit to be set. We could add a check in
__ext4_journalled_writepage() and ext4_journalled_write_end() to only
set the EXT4_STATE_JDATA bit if the journal is present, but that adds
an extra test and jump instruction. It's easier to simply remove the
BUG check.http://bugzilla.kernel.org/show_bug.cgi?id=12568
Signed-off-by: "Theodore Ts'o"
Cc: stable@kernel.org -
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
cifs: make sure we allocate enough storage for socket address
[CIFS] Make socket retry timeouts consistent between blocking and nonblocking cases
[CIFS] some cleanup to dir.c prior to addition of posix_open
[CIFS] revalidate parent inode when rmdir done within that directory
[CIFS] Rename md5 functions to avoid collision with new rt modules
cifs: turn smb_send into a wrapper around smb_sendv -
Commit e57db7b (SATA Sil: Blacklist system that spins off disks during ACPI power off)
breaks build like the following, in both cases when CONFIG_DMI set or not.drivers/ata/sata_sil.c: In function 'sil_broken_system_poweroff':
drivers/ata/sata_sil.c:713: error: implicit declaration of function 'dmi_first_match'
drivers/ata/sata_sil.c:713: warning: initialization makes pointer from integer without a castsata_sil.c should include dmi.h
Signed-off-by: Alexander Beregalov
Signed-off-by: Linus Torvalds -
btrfs requires version 0.18 of its tools, and squashfs requires 4.0.
ext3 should use and ext4 requires v1.41.4 of e2fsprogs.Signed-off-by: Bill Nottingham
Signed-off-by: Randy Dunlap
cc: Ted Tso
Signed-off-by: Linus Torvalds
