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We can't go around calling all sorts of magic per character functions at
full rate 3G data speed.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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* 'linux-next' of git://git.infradead.org/ubi-2.6:
UBI: fix compilation warnings
UBI: fix NOR flash recovery
UBI: nicify image sequence number handling
UBI: add image sequence number to EC header
UBI: remove bogus debugging checks
UBI: add empty eraseblocks verification
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The recent "UBI: fix NOR flash recovery" introduced compilation
warnings which were immediately spotted by our linux-next keeper.
This patch fixes them.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This commit fixes NOR flash recovery issues observed with Spansion
S29GL512N NOR.
When NOR erases, it first fills PEBs with zeroes, then sets all bytes
to 0xFF. Filling with zeroes starts from the end of the PEB. And when
power is cut, this results in PEBs containing correct EC and VID headers
but corrupted with zeros at the end. This confuses UBI and it mistakinly
accepts these PEBs and associate them with LEBs.
Fis this issue by zeroing EC and VID magics before erasing PEBs, to
make UBI later refuse zem.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Move the image seq. number handling from I/O level to the scanning
lever, where it really belongs to. Move the @image_seq_set variable
to the @struct ubi_scan_info structure, which exists only during
scanning.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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An image sequence number is added to the UBI erase-counter header
to be able determine if the root file system contains a mixture
of old and new images (because the flashing failed to complete).
A change to nolo is also needed for this to take effect.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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The 'paranoid_check_empty()' is bogus because, which is easilly
seen on NOR flash, which has long erase cycles, and which may
easilly end-up with half-erased eraseblocks. In this case the
paranoid check fails. I is just wrong to assume that PEBs which
do not have EC headers always contain all 0xFF. Such assumption
should not be made on the I/O level, which is quite low.
Thus, just kill the check.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This patch adds code which makes sure eraseblocks contain all 0xFF
bytes before starting using them. The verification is done only when
debugging checks are enabled.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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* 'linux-next' of git://git.infradead.org/ubifs-2.6:
UBIFS: fix corruption dump
UBIFS: clean up free space checking
UBIFS: small amendments in the LEB scanning code
UBIFS: dump a little more in case of corruptions
MAINTAINERS: update ahunter's e-mail address
UBIFS: allow more than one volume to be mounted
UBIFS: fix assertion warning
UBIFS: minor spelling and grammar fixes
UBIFS: fix 64-bit divisions in debug print
UBIFS: few spelling fixes
UBIFS: set write-buffer timout to 3-5 seconds
UBIFS: slightly optimize write-buffer timer usage
UBIFS: improve debugging messaged
UBIFS: fix integer overflow warning
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In the 'ubifs_recover_leb()' function, when we find corrupted
empty space, we dump 8K starting from the offset where the last
node ends. This is OK if the corrupted empty space is somewhere
near that offset. But if the corruption is far at the end of the
LEB, we will dump all 0xFF bytes and complitely ignore the
interesting data. This is observed on a PPC ("kilauea") with
NOR flash.
This patch changes the behavior and teaches UBIFS to print only
interesting data. I.e., now we find where corruption starts and
start dumping from that offset.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
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recovery.c has 'is_empty()' helper and it is better to use
this helper instead of re-implementing it in several places.
This patch does this and removes some amount of unneeded code.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
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This patch fixes few minor things I've spotted while going through
code:
1. Better document return codes
2. If 'ubifs_scan_a_node()' returns some thing we do not expect,
treat this as an error.
3. Try to do recovery only when 'ubifs_scan()' returns %-EUCLEAN,
not on any error.
4. If empty space starts at a non-aligned address, print a message.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
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In case of corruptions, dump 8192 bytes instead of 4096. The
largest node is 4096+ bytes, so it is better to see a node
boundary, which is not always possible when only 4096 bytes
are printed.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Reviewed-by: Adrian Hunter <Adrian.Hunter@nokia.com>
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Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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UBIFS uses a bdi device per volume, but does not care to hand out unique
names to each of them. This causes an error when trying to mount more
than one volumes. Append the UBI volume and device ID to avoid that.
[Amended a bit by Artem Bityutskiy]
Signed-off-by: Daniel Mack <daniel@caiaq.de>
Cc: Artem Bityutskiy <dedekind@infradead.org>
Cc: Adrian Hunter <ext-adrian.hunter@nokia.com>
Cc: linux-mtd@lists.infradead.org
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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When debugging is enabled and an unclean file-system is mounter,
the following assertion is triggered:
UBIFS assert failed in ubifs_tnc_start_commit at 805 (pid 1081)
Call Trace:
[cfaffbd0] [c0006cf8] show_stack+0x44/0x16c (unreliable)
[cfaffc10] [c011b738] ubifs_tnc_start_commit+0xbb8/0xd18
[cfaffc90] [c0112670] do_commit+0x150/0xa44
[cfaffd10] [c0125234] ubifs_rcvry_gc_commit+0xd8/0x544
[cfaffd60] [c0100e9c] ubifs_fill_super+0xe78/0x15f8
[cfaffdf0] [c0102118] ubifs_get_sb+0x20c/0x320
[cfaffe70] [c007f764] vfs_kern_mount+0x58/0xe0
[cfaffe90] [c007f83c] do_kern_mount+0x40/0xf8
[cfaffeb0] [c0095c24] do_mount+0x550/0x758
[cfafff10] [c0095ebc] sys_mount+0x90/0xe0
[cfafff40] [c000ed4c] ret_from_syscall+0x0/0x3c
The reason is that we initialize 'c->min_leb_idx' early, and do
not re-calculate it after journal replay.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
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Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
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Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This patch cleans up write-buffer timeout initialization and
sets it to 3-5 interval.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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This patch adds the following minor optimization:
1. If write-buffer does not use the timer, indicate it with the
wbuf->no_timer variable, instead of using the wbuf->softlimit
variable. This is better because wbuf->softlimit is of ktime_t
type, and the ktime_to_ns function contains 64-bit multiplication.
2. Do not call the 'hrtimer_cancel()' function for write-buffers
which do not use timers.
3. Do not cancel the timer in 'ubifs_put_super()' because the
synchronization function does this.
This patch also removes a confusing comment.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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1. Make the I/O debugging message print the journal head number.
2. Add prints to timer functions.
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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Fix the following warning:
fs/ubifs/io.c: In function 'ubifs_wbuf_init':
fs/ubifs/io.c:860: warning: integer overflow in expression
And limit maximum hrtimer delta to ULONG_MAX because the
argument is 'unsigned long'.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
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* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6:
[S390] define KTIME_SCALAR for 32-bit s390
[S390] add generic atomic64 support for 31 bit
[S390] improve suspend/resume error messages
[S390] set SCHED_OMIT_FRAME_POINTER for s390
[S390] add __ucmpdi2() helper function
[S390] perf_counter build fix
[S390] shutdown actions: save/return rc from init function
[S390] dasd: correct debugfeature sense dump
[S390] udelay: disable lockdep to avoid false positives
[S390] monreader: fix dev_set_drvdata conversion
[S390] sclp: fix compile error for !SCLP_CONSOLE
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32-bit s390 has efficient support for 64/32-bit conversions, define
KTIME_SCALAR to enable the use of the plain scalar nanosecond based
representation of ktime.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Performance counters need 64 bit atomic operations.
To keep the patch small we use the simple generic atomic64_t implementation.
The native implementation follows with the next kernel.
Fixes this build bug:
In file included from kernel/sched.c:42:
include/linux/perf_counter.h:427: error: expected specifier-qualifier-list before 'atomic64_t'
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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From: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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The frame pointer is useless for s390 in the sched.c code.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Provide __ucmpdi2() helper function on 31 bit so we don't run
again and again in compile errors like this one:
kernel/built-in.o: In function `T.689':
perf_counter.c:(.text+0x56c86): undefined reference to `__ucmpdi2'
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Add PERF_COUNTER_INDEX_OFFSET define to fix this build bug:
kernel/perf_counter.c: In function 'perf_counter_index':
kernel/perf_counter.c:1889: error: 'PERF_COUNTER_INDEX_OFFSET' undeclared
Same fix as for FRV since s390 doesn't support hw counters.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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We always returned -EINVAL when setting of a shutdown action failed. This was
misleading, if for example the hardware did not support the shutdown action.
Now we save each shutdown action's init return code and return it when the
action is being set.
Signed-off-by: Frank Munzert <munzert@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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remove loop, add some debug data and use get_sense function
Signed-off-by: Stefan Haberland <stefan.haberland@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Our udelay implementation enables interrupts to receive a special timer
interrupt regardless of the context it is called from.
This might lead to false positive lockdep reports. Since lockdep isn't
aware of the fact that only a single interrupt source is enabled it
warns about possible deadlocks that in reality won't happen, like
the one below.
To fix this disable lockdep before enabling interrupts.
[ 254.040888] =================================
[ 254.040904] [ INFO: inconsistent lock state ]
[ 254.040910] 2.6.30 #9
[ 254.040914] ---------------------------------
[ 254.040920] inconsistent {IN-HARDIRQ-W} -> {HARDIRQ-ON-W} usage.
[ 254.040927] swapper/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[ 254.040934] (sch->lock){?.-...}, at: [<00000000002e4778>] ccw_device_timeout+0x48/0x2f0
[ 254.040961] {IN-HARDIRQ-W} state was registered at:
[ 254.040969] [<0000000000096f74>] __lock_acquire+0x9d4/0x188c
[ 254.040985] [<0000000000097f68>] lock_acquire+0x13c/0x16c
[ 254.040998] [<00000000004527e0>] _spin_lock+0x74/0xb8
[ 254.041016] [<0000000000457eb2>] do_IRQ+0xde/0x208
[ 254.041031] [<000000000002d190>] io_return+0x0/0x8
[ 254.041049] [<0000000000029faa>] vtime_stop_cpu+0xbe/0x114
[ 254.041066] irq event stamp: 259629
[ 254.041076] hardirqs last enabled at (259628): [<000000000045238e>] _spin_unlock_irq+0x5e/0x9c
[ 254.041095] hardirqs last disabled at (259629): [<000000000045292e>] _spin_lock_irq+0x4a/0xc4
[ 254.041126] softirqs last enabled at (259614): [<000000000006500e>] __do_softirq+0x296/0x2b0
[ 254.041137] softirqs last disabled at (259619): [<0000000000024cf6>] do_softirq+0x102/0x108
[ 254.041147]
[ 254.041148] other info that might help us debug this:
[ 254.041153] 2 locks held by swapper/0:
[ 254.041157] #0: (&priv->timer){+.-...}, at: [<000000000006bf9a>] run_timer_softirq+0x19a/0x340
[ 254.041170] #1: (sch->lock){?.-...}, at: [<00000000002e4778>] ccw_device_timeout+0x48/0x2f0
[ 254.041182]
[ 254.041310] Call Trace:
[ 254.041313] ([<00000000000174fc>] show_trace+0x16c/0x170)
[ 254.041321] [<0000000000017578>] show_stack+0x78/0x104
[ 254.041327] [<000000000044d0ca>] dump_stack+0xc6/0xd4
[ 254.041342] [<00000000000949b4>] print_usage_bug+0x1c8/0x1fc
[ 254.041353] [<0000000000094e8a>] mark_lock+0x4a2/0x670
[ 254.041364] [<00000000000950e2>] mark_held_locks+0x8a/0xb4
[ 254.041375] [<0000000000095398>] trace_hardirqs_on_caller+0x74/0x1ac
[ 254.041388] [<00000000000954fa>] trace_hardirqs_on+0x2a/0x38
[ 254.041402] [<000000000025f1ec>] __udelay_disabled+0xac/0xfc
[ 254.041419] [<000000000025f432>] __udelay+0x12a/0x148
[ 254.041433] [<00000000002d64d8>] cio_commit_config+0x170/0x290
[ 254.041451] [<00000000002d6978>] cio_disable_subchannel+0x120/0x1cc
[ 254.041468] [<00000000002e32a4>] ccw_device_recog_done+0x54/0x2f4
[ 254.041485] [<00000000002e3638>] ccw_device_sense_id_done+0x50/0x90
[ 254.041508] [<00000000002e615a>] snsid_callback+0xfa/0x3a8
[ 254.041515] [<00000000002dd96c>] ccwreq_stop+0x80/0x90
[ 254.041523] [<00000000002dda8e>] ccw_request_timeout+0xc2/0xd0
[ 254.041530] [<00000000002e2f70>] ccw_device_request_event+0x58/0x90
[ 254.041537] [<00000000002e47ae>] ccw_device_timeout+0x7e/0x2f0
[ 254.041555] [<000000000006c02a>] run_timer_softirq+0x22a/0x340
[ 254.041566] [<0000000000064eb0>] __do_softirq+0x138/0x2b0
[ 254.041578] [<0000000000024cf6>] do_softirq+0x102/0x108
[ 254.041590] [<00000000000647ce>] irq_exit+0xee/0x114
[ 254.041603] [<0000000000457d88>] do_extint+0x130/0x17c
[ 254.041617] [<000000000002d41e>] ext_no_vtime+0x1e/0x22
[ 254.041631] [<0000000000029faa>] vtime_stop_cpu+0xbe/0x114
[ 254.041646] ([<0000000000029f58>] vtime_stop_cpu+0x6c/0x114)
[ 254.041662] [<000000000001d842>] cpu_idle+0x122/0x1c0
[ 254.041679] [<00000000004482c6>] start_secondary+0xce/0xe0
[ 254.041696] [<0000000000000000>] 0x0
[ 254.041715] [<0000000000000000>] 0x0
[ 254.041745] INFO: lockdep is turned off.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Fix this:
drivers/s390/char/monreader.c: In function 'mon_open':
drivers/s390/char/monreader.c:323: warning: passing argument 1 of 'dev_set_drvdata' from incompatible pointer type
include/linux/device.h:457: note: expected 'struct device *' but argument is of type 'struct device **'
drivers/s390/char/monreader.c: In function 'monreader_freeze':
drivers/s390/char/monreader.c:466: warning: passing argument 1 of 'dev_get_drvdata' from incompatible pointer type
include/linux/device.h:452: note: expected 'const struct device *' but argument is of type 'struct device **'
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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Define an empty static inline version of sclp_console_pm_event()
to fix the build error below for !SCLP_CONSOLE.
drivers/s390/built-in.o: In function `sclp_rw_pm_event':
sclp_rw.c:(.text+0x12f68): undefined reference to `sclp_console_pm_event'
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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* 'for-linus' of git://git.open-osd.org/linux-open-osd:
osdblk: Adjust queue limits to lower device's limits
osdblk: a Linux block device for OSD objects
MAINTAINERS: Add osd maintained files (F:)
exofs: Avoid using file_fsync()
exofs: Remove IBM copyrights
exofs: Fix bio leak in error handling path (sync read)
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call blk_queue_stack_limits() to copy queue limits from
the underline osd scsi_device. This is absolutely needed
because osdblk cannot sleep when allocating a lower-request and
therefore cannot be bouncing.
TODO: Dynamic changes of limits to the lower device queue
will not reflect in the upper driver
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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Submitted driver exports a block device of the form /dev/osdblkX,
where X is a decimal number.
It does that by mounting a stacking block device on top
of an osd object. For example, if you create a 2G object
on an OSD device, you can then use this module to present
that 2G object as a Linux block device.
See inside patch for exact documentation.
[Sitting at linux-next helped fix proper Kconfig dependency
for this driver, thanks to Randy Dunlap]
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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OSD files are found in three places:
drivers/scsi/osd/
include/scsi/osd_*
fs/exofs/
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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The use of file_fsync() in exofs_file_sync() is not necessary since it
does some extra stuff not used by exofs. Open code just the parts that
are currently needed.
TODO: Farther optimization can be done to sync the sb only on inode
update of new files, Usually the sb update is not needed in exofs.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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Boaz,
Congrats on getting all the OSD stuff into 2.6.30!
I just pulled the git, and saw that the IBM copyrights are still there.
Please remove them from all files:
* Copyright (C) 2005, 2006
* International Business Machines
IBM has revoked all rights on the code - they gave it to me.
Thanks!
Avishay
Signed-off-by: Avishay Traeger <avishay@gmail.com>
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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When failing a read request in the sync path, called from
write_begin, I forgot to free the allocated bio, fix it.
Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel
* 'drm-intel-next' of git://git.kernel.org/pub/scm/linux/kernel/git/anholt/drm-intel: (22 commits)
drm/i915: Fix for LVDS VBT change on IGDNG
drm/i915: Zap the GTT mapping when transitioning from untiled to tiled.
drm/i915: Refactor calls to unmap_mapping_range
drm/i915: Avoid saving/restore the modesetting registers twice in KMS mode
drm: Disable the unused connectors explicitly when resuming with KMS.
drm/i915: Restore the KMS modeset for every activated CRTC
drm/i915: Fix harmless warning from patch merged after i2c rework.
drm/i915: Disable GEM when a broken video BIOS takes up the whole aperture.
drm/i915: Check the LID device to decide whether the LVDS should be initialized
drm/i915: Move lock to more reasonable location
drm/i915: Add gtt_offset to gem object list debugfs output
drm/i915: Remove gtt_bound from drm_i915_gem_object
drm/i915: Disable VGA output when doing DRM_MODE_DPMS_OFF.
drm/i915: crt fetch EDID by DVI-I converter on G4x platform
drm/i915: Don't update display FIFO watermark on IGDNG
drm/i915: Adjust DisplayPort clocks to use 96MHz reference
drm/i915: Make driver less chatty
drm/i915: fix up a raw 64bit divide
drm/i915: enable sdvo lvds scaling function.
drm/i915: Set SSC frequency for 8xx chips correctly
...
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IGDNG mobile chip's LVDS data block removes panel fitting
register definition. So this fixes offset for LVDS timing
block parsing. Thanks for Michael Fu to catch this.
Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
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As of 52dc7d32b88156248167864f77a9026abe27b432, we could leave an old
linear GTT mapping in place, so that apps trying to GTT-mapped write in
tiled data wouldn't get the fence added, and garbage would get displayed.
Signed-off-by: Eric Anholt <eric@anholt.net>
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As we call unmap_mapping_range() twice in identical fashion, refactor
and attempt to explain why we need to call unmap_mapping_range().
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Eric Anholt <eric@anholt.net>
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In KMS mode we now use the normal mode-setting paths to set the modes
back to the current configuration, so we don't need to also run the more
limited non-KMS implementation of modesetting for resume.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
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Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Acked-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Acked-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
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Restore the modeset for every activated CRTC in course of resume.
This is realized by calling the function of drm_helper_resume_force_mode.
Note: it is meaningful only for the KMS mode.
https://bugs.freedesktop.org/show_bug.cgi?id=21719
https://bugs.freedesktop.org/show_bug.cgi?id=21708
https://bugs.freedesktop.org/show_bug.cgi?id=22285
https://bugs.freedesktop.org/show_bug.cgi?id=22263
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
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Signed-off-by: Eric Anholt <eric@anholt.net>
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