In commit 567aba0b79, the probe address
for tda8290_probe and tda8295_probe was hard-coded to 0x4b, which is the
default i2c address for those devices, but its possible for the device
to be at an alternate address, 0x42, which is the case for the HVR-1950.
If we probe the wrong address, probe fails and we have a non-working
device. We have the actual address passed into the function by way of
i2c_props, we just need to use it. Also fix up some copy/paste comment
issues and streamline debug spew a touch. Verified to restore my
HVR-1950 to full working order.
Special thanks to Ken Bass for reporting the issue in the first place,
and to both he and Gary Buhrmaster for aiding in debugging and analysis
of the problem.
Reported-by: Ken Bass <kbass@kenbass.com>
Tested-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
There's a Realtek combo card reader and IR receiver device with multiple
usb interfaces on it. The mceusb driver is incorrectly grabbing all of
them. This change should make it bind to only interface 2 (patch based
on lsusb output on the linux-media list from Lucian Muresan).
Tested regression-free with the six mceusb devices I have myself.
Reported-by: Patrick Boettcher <pboettcher@kernellabs.com>
Reported-by: Lucian Muresan <lucianm@users.sourceforge.net>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The CIR Wake FIFO is 67 bytes long, but the stock remote appears to only
populate 65 of them. Limit comparison to 65 bytes, and wake from suspend
works a whole lot better (it wasn't working at all for most folks).
Fix based on comparison with the old lirc_wb677 driver from Nuvoton,
debugging and testing done by Dave Treacy by way of the lirc mailing
list.
Reported-by: Dave Treacy <davetreacy@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch removes an assignment to the deprecated i2c_adapter.id
field. Since the field isn't used anywhere else in the driver it is
save to remove it.
Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
The newest variants of the HVR-1600 have an s5h1411/tda18271 for the digital
frontend. Add support for these boards.
Thanks to Hauppauge Computer Works for providing sample hardware.
[awalls@md.metrocast.net: Changed an additional log message to clarify for
the end user that the driver is defaulting to an original HVR-1600 for
unknown model numbers.]
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
After upgrading the kernel from stock Ubuntu 7.10 to
10.04, with no hardware changes, I started getting the dreaded DMA
TIMEOUT errors, followed by inability to encode until the machine was
rebooted.
I came across a post from Andy in March
(http://www.gossamer-threads.com/lists/ivtv/users/40943#40943) where he
speculates that perhaps the corrective actions being taken after a DMA
ERROR are not sufficient to recover the situation. After some testing
I suspect that this is indeed the case, and that in fact the corrective
action may be what hangs the card's DMA engine, rather than the
original error.
Specifically these DMA ERROR IRQs seem to present with two different
values in the IVTV_REG_DMASTATUS register: 0x11 and 0x13. The current
corrective action is to clear that status register back to 0x01 or
0x03, and then issue the next DMA request. In the case of a 0x13 this
seems to result in a minor glitch in the encoded stream due to the
failed transfer that was not retried, but otherwise things continue OK.
In the case of a 0x11 the card's DMA write engine is never heard from
again, and a DMA TIMEOUT follows shortly after. 0x11 is the killer.
I suspect that the two cases need to be handled differently. The
difference is in bit 1 (0x02), which is set when the error is about to
be successfully recovered, and clear when things are about to go bad.
Bit 1 of DMASTATUS is described differently in different places either
as a positive "write finished", or an inverted "write busy". If we
take the first definition, then when an error arises with state 0x11,
it means that the write did not complete. It makes sense to start a
new transfer, as in the current code. But if we take the second
definition, then 0x11 means "an error but the write engine is still
busy". Trying to feed it a new transfer in this situation might not be
a good idea.
As an experiment, I added code to ignore the DMA ERROR IRQ if DMASTATUS
is 0x11. I.e., don't start a new transfer, don't clear our flags, etc.
The hope was that the card would complete the transfer and issue a ENC
DMA COMPLETE, either successfully or with an error condition there.
However the card still hung.
The only remaining corrective action being taken with a 0x11 status was
then the write back to the status register to clear the error, i.e.
DMASTATUS = DMASTATUS & ~3. This would have the effect of clearing the
error bit 4, while leaving the lower bits indicating DMA write busy.
Strangely enough, removing this write to the status register solved the
problem! If the DMA ERROR IRQ with DMASTATUS=0x11 is completely
ignored, with no corrective action at all, then the card will complete
the transfer and issue a new IRQ. If the status register is written to
when it has the value 0x11, then the DMA engine hangs. Perhaps it's
illegal to write to
DMASTATUS while the read or write busy bit is set? At any rate, it
appears that the current corrective action is indeed making things
worse rather than better.
I put together a patch that modifies ivtv_irq_dma_err to do the
following:
- Don't write back to IVTV_REG_DMASTATUS.
- If write-busy is asserted, leave the card alone. Just extend the
timeout slightly.
- If write-busy is de-asserted, retry the current transfer.
This has completely fixed my DMA TIMEOUT woes. DMA ERR events still
occur, but now they seem to be correctly handled. 0x11 events no
longer hang the card, and 0x13 events no longer result in a glitch in
the stream, as the failed transfer is retried. I'm happy.
I've inlined the patch below in case it is of interest. As described
above, I have a theory about why it works (based on a different
interpretation of bit 1 of DMASTATUS), but I can't guarantee that my
theory is correct. There may be another explanation, or it may be a
fluke. Maybe ignoring that IRQ entirely would be equally effective?
Maybe the status register read/writeback sequence is race condition if
the card changes it in the mean time? Also as I am using a PVR-150
only, I have not been able to test it on other cards, which may be
especially relevant for 350s that support concurrent decoding.
Hopefully the patch does not break the DMA READ path.
Mike
[awalls@md.metrocast.net: Modified patch to add a verbose comment, make minor
brace reformats, and clear the error flags in the IVTV_REG_DMASTATUS iff both
read and write DMA were not in progress. Mike's conjecture about a race
condition with the writeback is correct; it can confuse the DMA engine.]
[Comment and analysis from the ML post by Michael <mike@rsy.com>]
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Fix the probing of cx2583x chips, because two controls were clustered
that are not created for these chips.
This regression was introduced in 2.6.36.
Signed-off-by: Sven Barth <pascaldragon@googlemail.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
The previous revert-commit, that affected cx23885-i2c.c, left some
unused labels that the compiler griped about. Clean them up.
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This reverts commit 44835f197b.
With the CX23885 hardware I2C master, checking for I2C slave ACK/NAK
is not valid when the I2C_EXTEND or I2C_NOSTOP bits are set.
Revert the commit that checks for I2C slave ACK/NAK on all transactions,
so that XC5000 tuners work with the CX23885 again.
Thanks go to Mark Zimmerman for reporting and bisecting this problem.
Bisected-by: Mark Zimmerman <markzimm@frii.com>
Reported-by: Mark Zimmerman <markzimm@frii.com>
Signed-off-by: Andy Walls <awalls@md.metrocast.net>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This patch adds the pid filtering for the dib7000M demod. It also
corrects the pid filtering for the dib7700 based board. It should
prevent an oops, when using dib7700p based board.
References: https://bugzilla.novell.com/show_bug.cgi?id=644807
Signed-off-by: Olivier Grenie <olivier.grenie@dibcom.fr>
Signed-off-by: Patrick Boettcher <patrick.boettcher@dibcom.fr>
Tested-by: Pavel SKARKA <paul.sp@seznam.cz>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
With the current matching rules the lookup for rc protocol named rc-5-sz matches with "rc-5" before finding "rc-5-sz". Thus one is able to never enable/disable the rc-5-sz protocol via sysfs.
Fix the lookup to require an exact match which allows the manipulation of sz protocol.
Signed-off-by: Antti Seppälä <a.seppala@gmail.com>
Cc: stable@kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
We calculate the current time of each clock base by adding an offset
to clock_monotonic. The offset for the clock bases is set in
retrigger_next_event() which is called when we switch a cpu to highres
mode or when the clock was set.
Add the missing update for clock boottime.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: John Stultz <johnstul@us.ibm.com>
This Patch frees all the dynamically allocated memory
which couldn't have been released in some error hitting cases.
Signed-off-by: Shweta Gulati <shweta.gulati@ti.com>
Signed-off-by: Kevin Hilman <khilman@ti.com>
Rename the numerals in the diskstats_show() into the macros.
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Liu Yuan <tailai.ly@taobao.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
Handling of out-of-bounds distances and allocation failure can use
better documentation. Add it.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
NUMA distance table handling has the following problems.
* numa_reset_distance() uses numa_distance * sizeof(numa_distance[0])
as the table size when it should be using the square of
numa_distance.
* The same size miscalculation when allocation space for phys_dist in
numa_emulation().
* In numa_emulation(), phys_dist must be reserved; otherwise, the new
emulated distance table may overlap it.
Fix them and, while at it, take numa_distance_cnt resetting in
numa_reset_distance() out of the if block to simplify the code a bit.
David Rientjes reported incorrect handling of distance table during
emulation.
-tj: Edited out numa_alloc_distance() related changes which weren't
necessary and rewrote patch description.
-v2: Ingo was unhappy with 80-column limit induced linebreaks. Let
lines run over 80-column.
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Reported-by: David Rientjes <rientjes@google.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Ingo Molnar <mingo@elte.hu>
Acked-by: David Rientjes <rientjes@google.com>
We currently set the filters after we mmap the events, this is a
race that let undesired events record themselves in the buffer before
we had the time to set the filters.
So set the filters before they can be recorded. That also librarizes
the filters setting so that filtering can be done more easily
from other tools than perf record later.
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
blk-flush decomposes a flush into sequence of multiple requests. On
completion of a request, the next one is queued; however, block layer
must not implicitly call into q->request_fn() directly from completion
path. This makes the queue behave unexpectedly when seen from the
drivers and violates the assumption that q->request_fn() is called
with process context + queue_lock.
This patch makes blk-flush the following two changes to make sure
q->request_fn() is not called directly from request completion path.
- blk_flush_complete_seq_end_io() now asks __blk_run_queue() to always
use kblockd instead of calling directly into q->request_fn().
- queue_next_fseq() uses ELEVATOR_INSERT_REQUEUE instead of
ELEVATOR_INSERT_FRONT so that elv_insert() doesn't try to unplug the
request queue directly.
Reported by Jan in the following threads.
http://thread.gmane.org/gmane.linux.ide/48778http://thread.gmane.org/gmane.linux.ide/48786
stable: applicable to v2.6.37.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Jan Beulich <JBeulich@novell.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
__blk_run_queue() automatically either calls q->request_fn() directly
or schedules kblockd depending on whether the function is recursed.
blk-flush implementation needs to be able to explicitly choose
kblockd. Add @force_kblockd.
All the current users are converted to specify %false for the
parameter and this patch doesn't introduce any behavior change.
stable: This is prerequisite for fixing ide oops caused by the new
blk-flush implementation.
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Jan Beulich <JBeulich@novell.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
This patch adds basic SandyBridge support, including hardware
cache events and PEBS events support.
It has been tested on SandyBridge CPUs with perf stat and also
with PEBS based profiling - both work fine.
The patch does not affect other models.
v2 -> v3:
- fix PEBS event 0xd0 with right umask combinations
- move snb pebs constraint assignment to intel_pmu_init
v1 -> v2:
- add more raw and PEBS events constraints
- use offcore events for LLC-* cache events
- remove the call to Nehalem workaround enable_all function
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Stephane Eranian <eranian@google.com>
Cc: Andi Kleen <andi@firstfloor.org>
LKML-Reference: <1299072424.2175.24.camel@localhost>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
The dcdbas driver can do an I/O write to cause a SMI to occur. The SMI handler
looks at certain registers and memory locations, so the SMI needs to happen
immediately. On some systems I/O writes are posted, though, causing the SMI to
happen well after the "outb" occurred, which causes random failures. Following
the "outb" with an "inb" forces the write to go through even if it is posted.
Signed-off-by: Stuart Hayes <stuart_hayes@yahoo.com>
Acked-by: Doug Warzecha <douglas_warzecha@dell.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When support for 82577/82578 was added[1] in 2.6.31, PHY wakeup was in-
advertently enabled (even though it does not function properly) on ICH10
LOMs. This patch makes it so that the ICH10 LOMs use MAC wakeup instead
as was done with the initial support for those devices (i.e. 82567LM-3,
82567LF-3 and 82567V-4).
[1] commit a4f58f5455
Reported-by: Aurelien Jarno <aurelien@aurel32.net>
Cc: <stable@kernel.org>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Reported-by: Stephen Hemminger <shemminger@vyatta.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
It's cleaned before saving and re-initialized after restoring.
So don't need to save/restore it. And also new chip has new address
for hardware status page register, don't write to old address.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Sparse complains because the e1000 driver is calling ioread on a pointer
not tagged as __iomem.
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Jeff Pieper <jeffrey.e.pieper@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Like many other places, we have to check that the array index is
within allowed limits, or otherwise, a kernel oops and other nastiness
can ensue when we access memory beyond the end of the array.
[ 5954.115381] BUG: unable to handle kernel paging request at 0000004000000000
[ 5954.120014] IP: __find_logger+0x6f/0xa0
[ 5954.123979] nf_log_bind_pf+0x2b/0x70
[ 5954.123979] nfulnl_recv_config+0xc0/0x4a0 [nfnetlink_log]
[ 5954.123979] nfnetlink_rcv_msg+0x12c/0x1b0 [nfnetlink]
...
The problem goes back to v2.6.30-rc1~1372~1342~31 where nf_log_bind
was decoupled from nf_log_register.
Reported-by: Miguel Di Ciurcio Filho <miguel.filho@gmail.com>,
via irc.freenode.net/#netfilter
Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Patrick McHardy <kaber@trash.net>
The fasteoi handler must mask the interrupt line in oneshot mode
otherwise we end up with an irq storm.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
vfs_rename_other() does not lock renamed inode with i_mutex. Thus changing
i_nlink in a non-atomic manner (which happens in ext2_rename()) can corrupt
it as reported and analyzed by Josh.
In fact, there is no good reason to mess with i_nlink of the moved file.
We did it presumably to simulate linking into the new directory and unlinking
from an old one. But the practical effect of this is disputable because fsck
can possibly treat file as being properly linked into both directories without
writing any error which is confusing. So we just stop increment-decrement
games with i_nlink which also fixes the corruption.
CC: stable@kernel.org
CC: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Josh Hunt <johunt@akamai.com>
Signed-off-by: Jan Kara <jack@suse.cz>
tps6586 does not support burst writes. i2c writes have to be
1 byte at a time.
Cc: stable@kernel.org
Signed-off-by: Varun Wadekar <vwadekar@nvidia.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
ASoC supports keeping the audio subsysetm active over suspend in order
to support use cases such as audio passthrough from a cellular modem
with the main CPU suspended. Ensure that we don't power down the CODEC
when this is happening by checking to see if VMID is up and skipping
suspend and resume when it is. If the CODEC has suspended then it'll
turn VMID off before the core suspend() gets called.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Fix the device name in DaVinci Voice Codec MFD driver to load
davinci-vcif and cq93vc codec client drivers.
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Commit 6b7ae9545a (libata: reimplement link power
management) removed the check of ATA_FLAG_LPM but neglected to remove the flag
itself. Do it now...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
All checks of ATA_FLAG_NO_LEGACY have been removed by the commits
c791c30670 ([libata] minor PCI IDE probe
fixes and cleanups) and f0d36efdc6 (libata:
update libata core layer to use devres), so I think it's time to finally
get rid of this flag...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Commit 0d5ff56677 (libata: convert to iomap)
removed all checks of ATA_FLAG_MMIO but neglected to remove the flag itself.
Do it now, at last...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
These flags are marked as obsolete and the checks for them have been removed
by commit 294440887b (libata-sff: kill unused
ata_bus_reset()), so I think it's time to finally get rid of them...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Commit 14bdef982c ([libata] convert drivers to
use ata.h mode mask defines) didn't convert these two libata driver outside
drivers/ata/...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
The driver makes use of the two options (CONFIG_SATA_DWC_[V]DEBUG) to enable
the debug output but they both are absent in drivers/ata/Kconfig...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
The driver erroneously uses ata_get_cmd_descript() not only for printing out
the ATA commands but also the protocol and DMA direction enums. Add functions
for properly printing those out...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
The caller expects this function to return the DMA channel number on success,
while it returns 0...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Fix the following compilation errors/warnings:
drivers/ata/sata_dwc_460ex.c:43:1: warning: "DRV_NAME" redefined
In file included from drivers/ata/sata_dwc_460ex.c:38:
drivers/ata/libata.h:31:1: warning: this is the location of the previous
definition
drivers/ata/sata_dwc_460ex.c:44:1: warning: "DRV_VERSION" redefined
drivers/ata/libata.h:32:1: warning: this is the location of the previous
definition
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_exec_command_by_tag':
drivers/ata/sata_dwc_460ex.c:1356: warning: passing argument 1 of
`ata_get_cmd_descript' makes integer from pointer without a cast
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_qc_issue':
drivers/ata/sata_dwc_460ex.c:1476: warning: `err' is used uninitialized in this
function
drivers/ata/sata_dwc_460ex.c:1465: note: `err' was declared here
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_qc_issue':
drivers/ata/sata_dwc_460ex.c:1493: warning: passing argument 1 of
`ata_get_cmd_descript' makes integer from pointer without a cast
drivers/ata/sata_dwc_460ex.c: In function `sata_dwc_qc_prep':
drivers/ata/sata_dwc_460ex.c:1537: error: `tag' undeclared (first use in this
function)
drivers/ata/sata_dwc_460ex.c:1537: error: (Each undeclared identifier is
reported only once
drivers/ata/sata_dwc_460ex.c:1537: error: for each function it appears in.)
NB: error only happens if DEBUG_NCQ macro is defined...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Somehow the driver was committed with a bare number for the PIO mask, instead
of ATA_PIO4...
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
The conversion is quite complex given that the libata new error
handler has to be hooked into the current libsas timeout and error
handling. The way this is done is to process all the failed commands
via libsas first, but if they have no underlying sas task (and they're
on a sata device) assume they are destined for the libata error
handler and send them accordingly.
Finally, activate the port recovery of the libata error handler for
each port known to the host. This is somewhat suboptimal, since that
port may not need recovering, but given the current architecture of
the libata error handler, it's the only way; and the spurious
activation is harmless.
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Right at the moment, the libata error handler is incredibly
monolithic. This makes it impossible to use from composite drivers
like libsas and ipr which have to handle error themselves in the first
instance.
The essence of the change is to split the monolithic error handler
into two components: one which handles a queue of ata commands for
processing and the other which handles the back end of readying a
port. This allows the upper error handler fine grained control in
calling libsas functions (and making sure they only get called for ATA
commands whose lower errors have been fixed up).
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
