Move the old one to mach-fs and replace with a new one that
only include the correct one for the machine architecture.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Move the old one to mach-fs and replace with a new one that
only include the correct one for the machine architecture.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Register number was incorrect in syscalls
that go via the restartblock (e.g, poll).
Signed-off-by: Edgar Iglesias <Edgar.Iglesias@axis.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
We don't need to take the BKL here.
Also fixes compile error after last commit (smp_lock.h was not included)
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
copy_to_user()/copy_from_user() must not be used with spinlocks held.
Move locks inside each case so we have better control of when the locks
are held.
Also, since we use spinlocks, we don't need to hold the BKL, so remove it.
Reported-by: Kulikov Vasiliy <segooon@gmail.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
All these files use the big kernel lock in a trivial
way to serialize their private file operations,
typically resulting from an earlier semi-automatic
pushdown from VFS.
None of these drivers appears to want to lock against
other code, and they all use the BKL as the top-level
lock in their file operations, meaning that there
is no lock-order inversion problem.
Consequently, we can remove the BKL completely,
replacing it with a per-file mutex in every case.
Using a scripted approach means we can avoid
typos.
file=$1
name=$2
if grep -q lock_kernel ${file} ; then
if grep -q 'include.*linux.mutex.h' ${file} ; then
sed -i '/include.*<linux\/smp_lock.h>/d' ${file}
else
sed -i 's/include.*<linux\/smp_lock.h>.*$/include <linux\/mutex.h>/g' ${file}
fi
sed -i ${file} \
-e "/^#include.*linux.mutex.h/,$ {
1,/^\(static\|int\|long\)/ {
/^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);
} }" \
-e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
-e '/[ ]*cycle_kernel_lock();/d'
else
sed -i -e '/include.*\<smp_lock.h\>/d' ${file} \
-e '/cycle_kernel_lock()/d'
fi
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
From: Frederic Weisbecker <fweisbec@gmail.com>
Pushdown the bkl to the remaining drivers using the
deprecated .ioctl.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
As explained in commit 1c0fe6e3bd, we want to call the architecture independent
oom killer when getting an unexplained OOM from handle_mm_fault, rather than
simply killing current.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: Mikael Starvik <starvik@axis.com>
GENERIC_TIME was not functional for CRIS, giving random backward
time jumps.
For CRISv32 implement a new clocksource using the free running counter
and ditch the arch_gettimeoffset.
The random time jumps still existed, but turned out to be the write_seqlock
which was missing around our do_timer() call.
So switch over to GENERIC_TIME using the clocksource for CRISv32.
CRISv10 doesn't have the free running counter needed for the
clocksource trick, but we can still use GENERIC_TIME with
arch_gettimeoffset.
Unfortunately, there were problems in using the prescaler register
to timer0 for the gettimeoffset calculation, so it is now ignored,
making our resolution worse by the tune of 40usec (0.4%) worst case.
At the same time, clean up some formatting and use NSEC_PER_SEC
instead of 1000000000.
Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Pass the correct end of the buffer to p9stat_read.
Signed-off-by: Latchesar Ionkov <lucho@ionkov.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
spi_write_then_read() may return its own return codes (e.g. -EIO),
so let's propagate the value down to the probe().
Also, remove jedec == 0 check, it isn't needed as nowadays we use
dedicated SPI device IDs for non-JEDEC flashes.
Suggested-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Since commit 18c6182bae ("Rework
probing/JEDEC code"), m25p80 driver successfully registers chips
even if JEDEC probing fails.
This was needed to support non-JEDEC flashes. Though, it appears
that some platforms (e.g. blackfin bf533 stamp[1]) used the old
behavior to detect if there's any flash connected, so the driver
have to fail on JEDEC probing errors.
This patch restores the old behavior for JEDEC flashes, and adds
"-nonjedec" SPI device IDs for M25Pxx flashes, so that the kernel
still supports non-JEDEC flashes.
[1] http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=5975
Reported-by: Mingquan Pan
Reported-by: Barry Song <21cnbao@gmail.com>
Signed-off-by: Anton Vorontsov <avorontsov@mvista.com>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
For no-mmu systems mmap() on RAM/ROM devices already works
but for systems with mmu it probably was not tested and
doesn't work.
This patch allows using mmap() on MTD RAM/ROM devices on systems
with MMU. It has been tested on mpc5121e based platform with
MR0A16A MRAM device attached over LocalBus.
Signed-off-by: Anatolij Gustschin <agust@denx.de>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This patch adds support for static flash partitioning from a platform
device. Also, we clean up some weirdness where statements were separated
by commas instead of semicolons. While we are at it, fix some minor bad
white space, too.
Signed-off-by: Richard Cochran <richard.cochran@omicron.at>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The mtd layer is responsible to call mtd->{suspend,resume}. Doing it
again in the driver is wrong and results in a warning:
nand_resume called for a chip which is not in suspended state
at resume time. Removing the calls from the resume and suspend
functions makes them empty allowing them to be deleted completely.
Signed-off-by: Eric Bénard <eric@eukrea.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
The variable 'syn' was being used uninitialized. Also
fixed incorrect use of syn[] vs s[].
Tested on powerpc board with 64MiB DOC2000.
Signed-off-by: Mark Ware <mware@elphinstone.net>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Samsung SoCs use own chip_probe function.
Don't touch the memory configuration at probe time.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Samsung SoCs use the own OneNAND controler and detect OneNAND chip at power on.
To use this feature, introduce the chip_probe function.
Also remove workaround for Samsung SoCs.
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Now we use a memory address to store the debug port info, So we need
to read/write this address when we choose DEBUG_LL. When MMU isn't
enable(I.E. the begining part of init stage of the linux kernel boot),
we need to access physical address instead of virtual address,
otherwise the kernel will crash.
Signed-off-by: Jason Wang <jason77.wang@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
EDAC MC3: CE page 0xc32281, offset 0x8a0, grain 0, syndrome 0x1, row 2, channel 1, label "": amd64_edac
EDAC MC3: CE - no information available: amd64_edacError Overflow
Add the missing space before "Error Overflow" on the second line.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
This file seeks to explain the nuances in various delays;
many driver writers are not necessarily familiar with the
various kernel timers, their shortfalls, and quirks. When
faced with
ndelay, udelay, mdelay, usleep_range, msleep, and msleep_interrubtible
the question "How do I just wait 1 ms for my hardware to
latch?" has the non-intuitive "best" answer:
usleep_range(1000,1500)
This patch is followed by a series of checkpatch additions
that seek to help kernel hackers pick the best delay.
Signed-off-by: Patrick Pannuto <ppannuto@codeaurora.org>
Cc: apw@canonical.com
Cc: corbet@lwn.net
Cc: arjan@linux.intel.com
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <1280786467-26999-3-git-send-email-ppannuto@codeaurora.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
