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This prevents crashes on dual core system when enough ticks are lost.
Replaces earlier patch by me.
Cc: Dave Jones <davej@redhat.com>
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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AMD systems have a modern APIC that supports 8 bit IDs, but
don't have a XAPIC version number. Add a new "modern_apic"
subfunction that handles this correctly and use it (nearly)
everywhere where XAPIC is tested for.
I removed one wart: the code specified that external APICs
would use an 8bit APIC ID. But I checked a real 82093 data sheet
and it says clearly that they only use 4bit. So I removed
this special case since it would a bit awkward to implement now.
I removed the valid APIC tests in mptable parsing completely. On any modern
system they only check against the full field width (8bit) anyways
and are no-ops. This also fixes them doing the wrong thing
on >8 core Opterons.
This makes i386 boot again on 16 core Opterons.
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Needed for other checks later in ACPI.
Pointed out by Len Brown
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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When nolapic was passed or the local APIC was disabled
for another reason ACPI would still parse the IO-APICs
until these were explicitely disabled with noapic.
Usually this resulted in a non booting configuration unless
"nolapic noapic" was used.
I also disabled the local APIC parsing in this case, although
that's only cosmetic (suppresses a few printks)
This hopefully makes nolapic work in all cases.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Horus systems don't have anything on bus 0 which makes
the Type 1 sanity checks fail. Use the DMI BIOS year to
check for newer systems and always assume Type 1 works on them.
I used 2001 as an pretty arbitary cutoff year.
Cc: gregkh@suse.de
Cc: Navin Boppuri <navin.boppuri@newisys.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This patch introduces a user for the e820_all_mapped function:
There have been several machines that don't have a working MMCONFIG,
often because of a buggy MCFG table in the ACPI bios. This patch adds a
simple sanity check that detects a whole bunch of these cases, and when
it detects it, linux now boots rather than crash-and-burns.
The accuracy of this detection can in principle be improved if there was
a "is this entire range in e820 with THIS attribute", but no such
function exist and the complexity needed for this is not really worth
it; this simple check already catches most cases anyway.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Introduce a e820_all_mapped() function which checks if the entire range
<start,end> is mapped with type.
This is done by moving the local start variable to the end of each
known-good region; if at the end of the function the start address is
still before end, there must be a part that's not of the correct type;
otherwise it's a good region.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Rename e820_mapped to e820_any_mapped since it tests if any part of the
range is mapped according to the type.
Later steps will introduce e820_all_mapped which will check if the
entire range is mapped with the type. Both have their merit.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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The node setup code would try to allocate the node metadata in the node
itself, but that fails if there is no memory in there.
This can happen with memory hotplug when the hotplug area defines an so
far empty node.
Now use bootmem to try to allocate the mem_map in other nodes.
And if it fails don't panic, but just ignore the node.
To make this work I added a new __alloc_bootmem_nopanic function that
does what its name implies.
TBD should try to use nearby nodes here. Currently we just use any.
It's hard to do it better because bootmem doesn't have proper fallback
lists yet.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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From: Keith Mannthey, Andi Kleen
Implement memory hotadd without sparsemem. The memory in the SRAT
hotadd area is just preserved instead and can be activated later.
There are a few restrictions:
- Only one continuous hotadd area allowed per node
The main problem is dealing with the many buggy SRAT tables
that are out there. The strategy here is to reject anything
suspicious.
Originally from Keith Mannthey, with several hacks and changes by AK
and also contributions from Andrew Morton
[ TBD: Problems pointed out by KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>:
1) Goto's rebuild_zonelist patch will not work if CONFIG_MEMORY_HOTPLUG=n.
Rebuilding zonelist is necessary when the system has just memory <
4G at boot, and hot add memory > 4G. because x86_64 has DMA32,
ZONE_NORAML is not included into zonelist at boot time if system
doesn't have memory >4G at boot.
[AK: should just force the higher zones at boot time when SRAT tells us]
2) zone and node's spanned_pages and present_pages are not incremented.
They should be.
For example, our server (ia64/Fujitsu PrimeQuest) can equip memory
from 4G to 1T(maybe 2T in future), and SRAT will *always* say we have
possible 1T +memory. (Microsoft requires "write all possible memory
in SRAT") When we reserve memmap for possible 1T memory, Linux will
not work well in +minimum 4G configuraion ;)
[AK: needs limiting to 5-10% of max memory]
]
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Memory hotadd doesn't need SPARSEMEM, but can be handled by just preallocating
mem_maps. This only needs some untangling of ifdefs to enable the necessary
code even without SPARSEMEM.
Originally from Keith Mannthey, hacked by AK.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Just call IRET always, no need for any special cases.
Needed for the next bug fix.
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Close of the merge window..
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Apparently nobody had tried to compile the ALSA CVS tree without power
management enabled.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* 'splice' of git://brick.kernel.dk/data/git/linux-2.6-block:
[PATCH] splice: fix page stealing LRU handling.
[PATCH] splice: page stealing needs to wait_on_page_writeback()
[PATCH] splice: export generic_splice_sendpage
[PATCH] splice: add a SPLICE_F_MORE flag
[PATCH] splice: add comments documenting more of the code
[PATCH] splice: improve writeback and clean up page stealing
[PATCH] splice: fix shadow[] filling logic
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Originally from Nick Piggin, just adapted to the newer branch.
You can't check PageLRU without holding zone->lru_lock. The page
release code can get away with it only because the page refcount is 0 at
that point. Also, you can't reliably remove pages from the LRU unless
the refcount is 0. Ever.
Signed-off-by: Nick Piggin <nickpiggin@yahoo.com.au>
Signed-off-by: Jens Axboe <axboe@suse.de>
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Thanks to Andrew for the good explanation of why this is so. akpm writes:
If a page is under writeback and we remove it from pagecache, it's still
going to get written to disk. But the VFS no longer knows about that page,
nor that this page is about to modify disk blocks.
So there might be scenarios in which those
blocks-which-are-about-to-be-written-to get reused for something else.
When writeback completes, it'll scribble on those blocks.
This won't happen in ext2/ext3-style filesystems in normal mode because the
page has buffers and try_to_release_page() will fail.
But ext2 in nobh mode doesn't attach buffers at all - it just sticks the
page in a BIO, finds some new blocks, points the BIO at those blocks and
lets it rip.
While that write IO's in flight, someone could truncate the file. Truncate
won't block on the writeout because the page isn't in pagecache any more.
So truncate will the free the blocks from the file under the page's feet.
Then something else can reallocate those blocks. Then write data to them.
Now, the original write completes, corrupting the filesystem.
Signed-off-by: Jens Axboe <axboe@suse.de>
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Forgot that one, thanks Jeff. Also move the other EXPORT_SYMBOL
to right below the functions.
Signed-off-by: Jens Axboe <axboe@suse.de>
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This lets userspace indicate whether more data will be coming in a
subsequent splice call.
Signed-off-by: Jens Axboe <axboe@suse.de>
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Hopefully this will make Andrew a little more happy.
Signed-off-by: Jens Axboe <axboe@suse.de>
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By cleaning up the writeback logic (killing write_one_page() and the manual
set_page_dirty()), we can get rid of ->stolen inside the pipe_buffer and
just keep it local in pipe_to_file().
This also adds dirty page balancing logic and O_SYNC handling.
Signed-off-by: Jens Axboe <axboe@suse.de>
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Clear the entire range, and don't increment pidx or we keep filling
the same position again and again.
Thanks to KAMEZAWA Hiroyuki.
Signed-off-by: Jens Axboe <axboe@suse.de>
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* master.kernel.org:/home/rmk/linux-2.6-arm: (27 commits)
[ARM] 3433/1: ARM: OMAP: 8/8 Update board files
[ARM] 3455/1: ARM: OMAP: 7/8 Misc updates, take 2
[ARM] 3454/1: ARM: OMAP: 6/8 Update framebuffer low-level init code, take 2
[ARM] 3430/1: ARM: OMAP: 5/8 Update PM
[ARM] 3429/1: ARM: OMAP: 4/8 Update GPIO
[ARM] 3428/1: ARM: OMAP: 3/8 Update pin multiplexing
[ARM] 3427/1: ARM: OMAP: 2/8 Update timers
[ARM] 3426/1: ARM: OMAP: 1/8 Update clock framework
[ARM] 3396/2: AT91RM9200 Platform devices update
[ARM] 3395/2: AT91RM9200 Dataflash Card vs MMC selection
[ARM] 3393/2: AT91RM9200 LED support
[ARM] 3453/1: Poodle: Correctly set the memory size
[ARM] 3446/1: i.MX: MMC/SD SDHC controller registration for i.MX/MX1 MX1ADS board
[ARM] 3444/1: i.MX: Scatter-gather DMA emulation for i.MX/MX1
[ARM] 3451/1: ep93xx: use the m48t86 rtc driver on the ts72xx platform
[ARM] 3450/1: ep93xx: use the ep93xx rtc driver
[ARM] 3452/1: [S3C2410] RX3715 - add nand information
[ARM] 3449/1: [S3C2410] Anubis - fix NAND timings
[ARM] 3448/1: [S3C2410] Settle delay when _enabling_ USB PLL
[ARM] 3442/1: [S3C2410] SMDK: NAND device setup
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* master.kernel.org:/home/rmk/linux-2.6-mmc:
[ARM] 3457/1: i.MX: SD/MMC support for i.MX/MX1
[ARM] 3456/1: AT91RM9200 support for 2.6 (MMC/SD driver)
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* git://oss.sgi.com:8090/oss/git/xfs-2.6:
[XFS] Provide XFS support for the splice syscall.
[XFS] Reenable write barriers by default.
[XFS] Make project quota enforcement return an error code consistent with
[XFS] Implement the silent parameter to fill_super, previously ignored.
[XFS] Cleanup comment to remove reference to obsoleted function
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* master.kernel.org:/pub/scm/linux/kernel/git/perex/alsa: (28 commits)
[ALSA] Kconfig SND_SEQUENCER_OSS help text fix
[ALSA] Add Aux input switch control for Aureon Universe
[ALSA] pcxhr - Fix the crash with REV01 board
[ALSA] sound/pci/hda: use create_singlethread_workqueue()
[ALSA] hda-intel - Add support of ATI SB600
[ALSA] cs4281 - Fix the check of timeout in probe
[ALSA] cs4281 - Fix the check of right channel
[ALSA] Test volume resolution of usb audio at initialization
[ALSA] maestro3.c: fix BUG, optimization
[ALSA] HDA/Realtek: multiple input mux definitions and pin mode additions
[ALSA] AdLib FM card driver
[ALSA] Fix / clean up PCM-OSS setup hooks
[ALSA] Clean up PCM codes (take 2)
[ALSA] Tiny clean up of PCM codes
[ALSA] ISA drivers bailing on first !enable[i]
[ALSA] Remove obsolete kfree_nocheck call
[ALSA] Remove obsolete kfree_nocheck call
[ALSA] Add snd-als300 driver for Avance Logic ALS300/ALS300+ soundcards
[ALSA] Add snd-riptide driver for Conexant Riptide chip
[ALSA] hda-codec - Fix noisy output wtih AD1986A 3stack model
...
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No one should be writing a PAGE_SIZE worth of data to a normal sysfs
file, so properly terminate the buffer.
Thanks to Al Viro for pointing out my supidity here.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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This reverts the mutex conversion that was recently done to the hdaps
driver; this coversion was buggy because the hdaps driver started using
this semaphore in IRQ context, which mutexes do not allow. Easiest
solution for now is to just revert the patch (the patch was part of a
bigger GIT commit, 9a61bf6300533d3b64d7ff29adfec00e596de67d but this
only reverts this one file)
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* master.kernel.org:/pub/scm/linux/kernel/git/wim/linux-2.6-watchdog:
[WATCHDOG] at91_wdt.c - Atmel AT91RM9200 watchdog driver
[WATCHDOG] pcwd_usb.c: fix a NULL pointer dereference
[WATCHDOG] pcwd.c sprintf/strcpy fix
[WATCHDOG] pcwd.c general clean-up after patches
[WATCHDOG] pcwd.c add debug info
[WATCHDOG] pcwd.c pcwd_cleanup_module patch
[WATCHDOG] pcwd.c firmware-info patch
[WATCHDOG] pcwd.c control status patch
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* git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (48 commits)
Documentation: fix minor kernel-doc warnings
BUG_ON() Conversion in drivers/net/
BUG_ON() Conversion in drivers/s390/net/lcs.c
BUG_ON() Conversion in mm/slab.c
BUG_ON() Conversion in mm/highmem.c
BUG_ON() Conversion in kernel/signal.c
BUG_ON() Conversion in kernel/signal.c
BUG_ON() Conversion in kernel/ptrace.c
BUG_ON() Conversion in ipc/shm.c
BUG_ON() Conversion in fs/freevxfs/
BUG_ON() Conversion in fs/udf/
BUG_ON() Conversion in fs/sysv/
BUG_ON() Conversion in fs/inode.c
BUG_ON() Conversion in fs/fcntl.c
BUG_ON() Conversion in fs/dquot.c
BUG_ON() Conversion in md/raid10.c
BUG_ON() Conversion in md/raid6main.c
BUG_ON() Conversion in md/raid5.c
Fix minor documentation typo
BFP->BPF in Documentation/networking/tuntap.txt
...
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sbp2util_mark_command_completed takes a lock which was already taken by
sbp2scsi_complete_all_commands. This is a regression in Linux 2.6.15.
Reported by Kristian Harms at
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=187394
[ More complete commentary, as response to questions by Andrew: ]
> This changes the call environment for all implementations of
> ->Current_done(). Are they all safe to call under this lock?
Short answer: Yes, trust me. ;-) Long answer:
The done() callbacks are passed on to sbp2 from the SCSI stack along
with each SCSI command via the queuecommand hook. The done() callback
is safe to call in atomic context. So does
Documentation/scsi/scsi_mid_low_api.txt say, and many if not all SCSI
low-level handlers rely on this fact. So whatever this callback does,
it is "self-contained" and it won't conflict with sbp2's internal ORB
list handling. In particular, it won't race with the
sbp2_command_orb_lock.
Moreover, sbp2 already calls the done() handler with
sbp2_command_orb_lock taken in sbp2scsi_complete_all_commands(). I
admit this is ultimately no proof of correctness, especially since this
portion of code introduced the spinlock recursion in the first place and
we didn't realize it since this code's submission before 2.6.15 until
now. (I have learned a lesson from this.)
I stress-tested my patch on x86 uniprocessor with a preemptible SMP
kernel (alas I have no SMP machine yet) and made sure that all code
paths which involve the sbp2_command_orb_lock were gone through multiple
times.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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* master.kernel.org:/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (49 commits)
V4L/DVB (3667b): cpia2: fix function prototype
V4L/DVB (3702): Make msp3400 routing defines more consistent
V4L/DVB (3700): Remove obsolete commands from tvp5150.c
V4L/DVB (3697): More msp3400 and bttv fixes
V4L/DVB (3696): Previous change for cx2341X boards broke the remote support
V4L/DVB (3693): Fix msp3400c and bttv stereo/mono/bilingual detection/handling
V4L/DVB (3692): Keep experimental SLICED_VBI defines under an #if 0
V4L/DVB (3689): Kconfig: fix VP-3054 Secondary I2C Bus build configuration menu dependencies
V4L/DVB (3673): Fix budget-av CAM reset
V4L/DVB (3672): Fix memory leak in dvr open
V4L/DVB (3671): New module parameter 'tv_standard' (dvb-ttpci driver)
V4L/DVB (3670): Fix typo in comment
V4L/DVB (3669): Configurable dma buffer size for saa7146-based budget dvb cards
V4L/DVB (3653h): Move usb v4l docs into Documentation/video4linux
V4L/DVB (3667a): Fix SAP + stereo mode at msp3400
V4L/DVB (3666): Remove trailing newlines
V4L/DVB (3665): Add new NEC uPD64031A and uPD64083 i2c drivers
V4L/DVB (3663): Fix msp3400c wait time and better audio mode fallbacks
V4L/DVB (3662): Don't set msp3400c-non-existent register
V4L/DVB (3661): Add wm8739 stereo audio ADC i2c driver
...
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master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband
* 'for-linus' of master.kernel.org:/pub/scm/linux/kernel/git/roland/infiniband:
IB/ipath: kbuild infrastructure
IB/ipath: infiniband verbs support
IB/ipath: misc infiniband code, part 2
IB/ipath: misc infiniband code, part 1
IB/ipath: infiniband RC protocol support
IB/ipath: infiniband UC and UD protocol support
IB/ipath: infiniband header files
IB/ipath: layering interfaces used by higher-level driver code
IB/ipath: support for userspace apps using core driver
IB/ipath: sysfs and ipathfs support for core driver
IB/ipath: misc driver support code
IB/ipath: chip initialisation code, and diag support
IB/ipath: support for PCI Express devices
IB/ipath: support for HyperTransport devices
IB/ipath: core driver header files
IB/ipath: core device driver
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* master.kernel.org:/pub/scm/linux/kernel/git/brodo/pcmcia-2.6: (33 commits)
[PATCH] pcmcia: declare pccard_iodyn_ops (fix m8xx_pcmcia.c compilation error)
[PATCH] pcmcia: fix pcmcia_device_remove oops
[PATCH] pcmcia: Add support for Possio GCC AKA PCMCIA Siemens MC45
[PATCH] pcmcia: pseudo device handling update
[PATCH] pcmcia: convert DEV_OK to pcmcia_dev_present
[PATCH] pcmcia: use bitfield instead of p_state and state
[PATCH] pcmcia: remove unused p_dev->state flags
[PATCH] pcmcia: make pcmcia_release_{io,irq} static
[PATCH] pcmcia: add return value to _config() functions
[PATCH] pcmcia: remove dev_link_t and client_handle_t indirection
[PATCH] pcmcia: embed dev_link_t into struct pcmcia_device
[PATCH] pcmcia: rename pcmcia_device.state
[PATCH] pcmcia: remove unneeded Vcc pseudo setting
[PATCH] pcmcia: remove export of pcmcia_release_configuration
[PATCH] pcmcia: default suspend and resume handling
[PATCH] pcmcia: convert remaining users of pcmcia_release_io and _irq
[PATCH] pcmcia: add pcmcia_disable_device
[PATCH] serial_cs: add Merlin U630 IDs
[PATCH] pcmcia: AT91RM9200 Compact Flash driver
[PATCH] pcmcia: socket.functions starts with 1
...
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* master.kernel.org:/pub/scm/linux/kernel/git/dtor/input: (26 commits)
Input: add support for Braille devices
Input: synaptics - limit rate to 40pps on Toshiba Protege M300
Input: gamecon - add SNES mouse support
Input: make modalias code respect allowed buffer size
Input: convert /proc handling to seq_file
Input: limit attributes' output to PAGE_SIZE
Input: gameport - fix memory leak
Input: serio - fix memory leak
Input: zaurus keyboard driver updates
Input: i8042 - fix logic around pnp_register_driver()
Input: ns558 - fix logic around pnp_register_driver()
Input: pcspkr - separate device and driver registration
Input: atkbd - allow disabling on X86_PC (if EMBEDDED)
Input: atkbd - disable softrepeat for dumb keyboards
Input: atkbd - fix complaints about 'releasing unknown key 0x7f'
Input: HID - fix duplicate key mapping for Logitech UltraX remote
Input: use kzalloc() throughout the code
Input: fix input_free_device() implementation
Input: initialize serio and gameport at subsystem level
Input: uinput - semaphore to mutex conversion
...
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* master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc:
[PATCH] powerpc: iSeries needs slb_initialize to be called
powerpc: hook up the splice syscall
[PATCH] powerpc/cell: compile fixes
[PATCH] powerpc: trivial spelling fixes in fault.c
[PATCH] powerpc/pseries: EEH Cleanup
[PATCH] powerpc/pseries: misc lparcfg fixes
[PATCH] powerpc/pseries: fix device name printing, again.
[PATCH] powerpc: Extends HCALL interface for InfiniBand usage
[PATCH] powerpc/pseries: Change H_StudlyCaps to H_SHOUTING_CAPS
[PATCH] powerpc/pseries: print message if EEH recovery fails
[PATCH] powerpc/pseries: mutex lock to serialize EEH event processing
powerpc: converted embedded platforms to use new define_machine support
powerpc: merge machine_check_exception between ppc32 & ppc64
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6:
[SPARC]: Wire up sys_sync_file_range() into syscall tables.
[SPARC]: Wire up sys_splice() into the syscall tables.
[SPARC64]: Update defconfig.
[SPARC64]: Align address in huge_pte_alloc().
[SPARC64]: Document the instruction checks we do in do_sparc64_fault().
[SPARC64]: Make tsb_sync() mm comparison more precise.
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* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6:
[NET]: Fully fix the memory leaks in sys_accept().
[NETFILTER]: iptables 32bit compat layer
[NETFILTER]: {ip,nf}_conntrack_netlink: fix expectation notifier unregistration
[NETFILTER]: fix ifdef for connmark support in nf_conntrack_netlink
[NETFILTER]: x_tables: unify IPv4/IPv6 multiport match
[NETFILTER]: x_tables: unify IPv4/IPv6 esp match
[NET]: Fix dentry leak in sys_accept().
[IPSEC]: Kill unused decap state structure
[IPSEC]: Kill unused decap state argument
[NET]: com90xx kmalloc fix
[TG3]: Update driver version and reldate.
[TG3]: Revert "Speed up SRAM access"
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It doesn't make the splice itself necessarily nonblocking (because the
actual file descriptors that are spliced from/to may block unless they
have the O_NONBLOCK flag set), but it makes the splice pipe operations
nonblocking.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Patch from Pavel Pisa
This patch adds support of i.MX/MX1 SD/MMC controller.
It has been significantly redesigned from the original Sascha Hauer's
version to support scatter-gather DMA, to conform to latest Pierre Ossman's
and Russell King's MMC-SD Linux 2.6.x infrastructure.
The handling of all events has been moved to the softirq context
and is designed with no busy-looping in mind. Unfortunately
some controller bugs has to be overcome by limited looping
about 2-20 usec but these are observed only for initial card
recognition phase.
There are still some missing/missed IRQs problems under heavy load.
Help of somebody with access to the full SDHC design information
is probably necessary.
Regenerated against 2.6.16-git-060402 to solve clash with other patches.
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Acked-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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Patch from Andrew Victor
This patch adds support for the MMC/SD card interface on the Atmel
AT91RM9200 processor.
Original driver was by Nick Randell, but a number of people have
subsequently worked on it. It's currently maintained by Malcolm Noyes.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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(We'd only added the number, which meant that actually trying
to use splice just went off into la-la-land)
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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Watchdog driver for the Atmel AT91RM9200 processor.
Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
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The Coverity checker noted that this resulted in a NULL pointer
reference if we were coming from
if (usb_pcwd == NULL) {
printk(KERN_ERR PFX "Out of memory\n");
goto error;
}
Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
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change sprintf(pcwd_private.fw_ver_str, "ERROR");
to strcpy... as pointed out by Andrew Morton.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
Signed-off-by: Andrew Morton <akpm@osdl.org>
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removal of includes (since we don't use kmalloc and
TASK_INTERRUPTABLE anymore).
Addition of missing commands.
Printk that lets the user know when the module was
unloaded.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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Add debugging info for the pcwd.c module.
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>
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