- 13 Jan, 2011 40 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/dtor/inputLinus Torvalds authored
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: Input: add SW_ROTATE_LOCK switch type Input: fix force feedback capability query example Input: wacom_w8001 - add single-touch support Input: add Austria Microsystem AS5011 joystick driver Input: remove aaed2000 keyboard driver Input: i8042 - introduce 'notimeout' blacklist for Dell Vostro V13 Input: cy8ctmg110_ts - Convert to dev_pm_ops Input: migor_ts - convert to dev_pm_ops Input: mcs5000_ts - convert to dev_pm_ops Input: eeti_ts - convert to dev_pm_ops Input: ad7879 - convert I2C to dev_pm_ops
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Lasse Collin authored
Signed-off-by:
Lasse Collin <lasse.collin@tukaani.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Lasse Collin authored
Check for end of the input buffer when skipping over the filename field in the .gz file header. Signed-off-by:
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Lasse Collin authored
This integrates the XZ decompression code to the x86 pre-boot code. mkpiggy.c is updated to reserve about 32 KiB more buffer safety margin for kernel decompression. It is done unconditionally for all decompressors to keep the code simpler. The XZ decompressor needs around 30 KiB of heap, so the heap size is increased to 32 KiB on both x86-32 and x86-64. Documentation/x86/boot.txt is updated to list the XZ magic number. With the x86 BCJ filter in XZ, XZ-compressed x86 kernel tends to be a few percent smaller than the equivalent LZMA-compressed kernel. Signed-off-by:
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Lasse Collin authored
This implements the API defined in <linux/decompress/generic.h> which is used for kernel, initramfs, and initrd decompression. This patch together with the first patch is enough for XZ-compressed initramfs and initrd; XZ-compressed kernel will need arch-specific changes. The buffering requirements described in decompress_unxz.c are stricter than with gzip, so the relevant changes should be done to the arch-specific code when adding support for XZ-compressed kernel. Similarly, the heap size in arch-specific pre-boot code may need to be increased (30 KiB is enough). The XZ decompressor needs memmove(), memeq() (memcmp() == 0), and memzero() (memset(ptr, 0, size)), which aren't available in all arch-specific pre-boot environments. I'm including simple versions in decompress_unxz.c, but a cleaner solution would naturally be nicer. Signed-off-by:
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Lasse Collin authored
In userspace, the .lzma format has become mostly a legacy file format that got superseded by the .xz format. Similarly, LZMA Utils was superseded by XZ Utils. These patches add support for XZ decompression into the kernel. Most of the code is as is from XZ Embedded <http://tukaani.org/xz/embedded.html>. It was written for the Linux kernel but is usable in other projects too. Advantages of XZ over the current LZMA code in the kernel: - Nice API that can be used by other kernel modules; it's not limited to kernel, initramfs, and initrd decompression. - Integrity check support (CRC32) - BCJ filters improve compression of executable code on certain architectures. These together with LZMA2 can produce a few percent smaller kernel or Squashfs images than plain LZMA without making the decompression slower. This patch: Add the main decompression code (xz_dec), testing module (xz_dec_test), wrapper script (xz_wrap.sh) for the xz command line tool, and documentation. The xz_dec module is enough to have a usable XZ decompressor e.g. for Squashfs. Signed-off-by:
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Lasse Collin authored
Callback-to-callback decompression mode is used for initrd (not initramfs). The LZO wrapper is broken for this use case for two reasons: - The argument validation is needlessly too strict by requiring that "posp" is non-NULL when "fill" is non-NULL. - The buffer handling code didn't work at all for this use case. I tested with LZO-compressed kernel, initramfs, initrd, and corrupt (truncated) initramfs and initrd images. Signed-off-by: -
Lasse Collin authored
The code assumes that the input is valid and not truncated. Add checks to avoid reading past the end of the input buffer. Change the type of "skip" from u8 to int to fix a possible integer overflow. Signed-off-by:
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Lasse Collin authored
The return value of flush() is not checked in unlzo(). This means that the decompressor won't stop even if the caller doesn't want more data. This can happen e.g. with a corrupt LZO-compressed initramfs image. Signed-off-by:
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Lasse Collin authored
Validate the newly decoded distance (rep0) in process_bit1(). This is to detect corrupt LZMA data quickly. The old code can run for long time producing garbage until it hits the end of the input. Signed-off-by:
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Lasse Collin authored
The return value of wr->flush() is not checked in write_byte(). This means that the decompressor won't stop even if the caller doesn't want more data. This can happen e.g. with corrupt LZMA-compressed initramfs. Returning the error quickly allows the user to see the error message quicker. There is a similar missing check for wr.flush() near the end of unlzma(). Signed-off-by:
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Lasse Collin authored
Return value of rc->fill() is checked in rc_read() and error() is called when needed, but then the code continues as if nothing had happened. rc_read() is a void function and it's on the top of performance critical call stacks, so propagating the error code via return values doesn't sound like the best fix. It seems better to check rc->buffer_size (which holds the return value of rc->fill()) in the main loop. It does nothing bad that the code runs a little with unknown data after a failed rc->fill(). This fixes an infinite loop in initramfs decompression if the LZMA-compressed initramfs image is corrupt. Signed-off-by:
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Lasse Collin authored
Validation of header.pos calls error() but doesn't make the function return to indicate an error to the caller. Instead the decoding is attempted with invalid header.pos. This fixes it. Signed-off-by:
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Lasse Collin authored
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Lasse Collin authored
Currently users of mm.h need to include <linux/slab.h> to use the macros malloc() and free() provided by mm.h. This fixes it. Signed-off-by:
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Lasse Collin authored
set_error_fn() has become a useless complication after c1e7c3ae ("bzip2/lzma/gzip: pre-boot malloc doesn't return NULL on failure") fixed the use of error() in malloc(). Only decompress_unlzma.c had some use for it and that was easy to change too. This also gets rid of the static function pointer "error", which should have been marked as __initdata. Signed-off-by:
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Lasse Collin authored
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Mike Frysinger authored
This header uses things like __be32, so pull in linux/types.h. Further, it uses BLOCK_SIZE, so pull in linux/fs.h. Signed-off-by:
Mike Frysinger <vapier@gentoo.org> Signed-off-by:
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Andrew Morton authored
Cc: Ahmed S. Darwish <darwish.07@gmail.com> Cc: Kyungmin Park <kyungmin.park@samsung.com> Cc: Marco Stornelli <marco.stornelli@gmail.com> Signed-off-by:
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Stefani Seibold authored
Generate a unique inode numbers for any entries in the cram file system. For files which did not contain data's (device nodes, fifos and sockets) the offset of the directory entry inside the cramfs plus 1 will be used as inode number. The + 1 for the inode will it make possible to distinguish between a file which contains no data and files which has data, the later one has a inode value where the lower two bits are always 0. It also reimplements the behavior to set the size and the number of block to 0 for special file, which is the right value for empty files, devices, fifos and sockets As a little benefit it will be also more compatible which older mkcramfs, because it will never use the cramfs_inode->offset for creating a inode number for special files. [akpm@linux-foundation.org: trivial comment fix] [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Stefani Seibold <stefani@seibold.net> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: Pekka Enberg <penberg@kernel.org> Signed-off-by:
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Alexander Shishkin authored
Currently, 3 kernel function prototypes are present in a header file exported to userland. This patch fixes it. Signed-off-by:
Alexander Shishkin <virtuoso@slind.org> Signed-off-by:
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Jeff Moyer authored
aio_run_iocbs() is not used at all, so get rid of it. [akpm@linux-foundation.org: coding-style fixes] Signed-off-by:
Jeff Moyer <jmoyer@redhat.com> Signed-off-by:
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Namhyung Kim authored
'nr >= min_nr >= 0' always satisfies 'nr >= 0' so the check is unnecesary. Signed-off-by:
Namhyung Kim <namhyung@gmail.com> Acked-by:
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Dmitry Torokhov authored
When hypervisor decides to decrease target balloon size while the balloon driver tries to lock pages hypervisor may respond with VMW_BALLOON_PPN_NOTNEEDED. Use this data and immediately stop reserving pages and wait for the next update cycle to fetch new target instead of continuing trying to lock pages until size of refused list grows above VMW_BALLOON_MAX_REFUSED (16) pages. As a result the driver stops bothering the hypervisor with its attempts to lock more pages that are not needed anymore. Most likely next order from hypervisor will be to reduce ballon size anyway. It is a small optimization. Signed-off-by:
Dmitry Torokhov <dtor@vmware.com> Signed-off-by:
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Mika Laitio authored
This is a 1-wire/w1 DS2423 slave driver for reading the values from all 4 counters available DS2423 devices by using standard w1_slave file. In ds2423 the counters are tied to ram pages 12-15 in and each of those ram-pages. Each of these counter values (and asoociated ram page values) are represented as a own line in w1_slave file. Driver has been tested on mips and x86. usage example: cat /sys/bus/w1/devices/1d-00000009b964/w1_slave 00 02 00 00 00 00 00 00 00 6d 38 00 ff ff 00 00 fe ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff crc=YES c=2 00 02 00 00 00 00 00 00 00 e0 1f 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff crc=YES c=2 00 5a 0e 5f 18 00 00 00 00 0b 28 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff 00 00 ff ff crc=YES c=408882778 00 05 00 00 00 00 00 00 00 8d 39 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff crc=YES c=5 Patch includes also the documentation. [randy.dunlap@oracle.com: fix ds2423 build, needs to select CRC16] Signed-off-by:
Mika Laitio <lamikr@pilppa.org> Signed-off-by:
Randy Dunlap <randy.dunlap@oracle.com> Cc: Evgeniy Polyakov <johnpol@2ka.mipt.ru> Signed-off-by:
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Alex Dubov authored
Apart from currently used standard memstick data transfer method, Sony introduced several newer ones, to uncover full bandwidth/capacity of its Pro, HG and XC media formats. This patch lays a foundation to enable those methods as made possible by host/media capabilities. As a side effect of this patch, mspro_block_read_attributes became more streamlined and readable. [akpm@linux-foundation.org: fix printk warning] Signed-off-by:
Alex Dubov <oakad@yahoo.com> Reported-by:
Maxim Levitsky <maximlevitsky@gmail.com> Signed-off-by:
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Alex Dubov authored
mspro_block_mutex is identical in scope to mspro_block_disk_lock and therefore unnecessary. Signed-off-by:
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Alex Dubov authored
Implement the usual pattern around idr_pre_get() and idr_get_new() to handlethe situation where another thread concurrently steals this thread's idr_pre_get() preallocation. Signed-off-by:
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Takashi Iwai authored
Signed-off-by:
Aries Lee <arieslee@jmicron.com> Signed-off-by:
Takashi Iwai <tiwai@suse.de> Cc: Alex Dubov <oakad@yahoo.com> Signed-off-by:
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Takashi Iwai authored
Add a function jmb38x_ms_pmos() to enable / disable PMOS setups for JMicron 38x controllers. Signed-off-by:
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Takashi Iwai authored
This patch corrects the definition of clock values for JMicron 38x controllers and sets the value properly per interface type. Also, it adds a check for TPC errors in the interrupt handler. Signed-off-by:
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Vasiliy Kulikov authored
If device_register() fails then call put_device(). See comment to device_register. Signed-off-by:
Vasiliy Kulikov <segooon@gmail.com> Cc: Maxim Levitsky <maximlevitsky@gmail.com> Cc: Alex Dubov <oakad@yahoo.com> Signed-off-by:
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Alexander Gordeev authored
Add PPS signal generator which utilizes STROBE pin of a parallel port to send PPS signals. It uses parport abstraction layer and hrtimers to precisely control the signal. Signed-off-by:
Alexander Gordeev <lasaine@lvk.cs.msu.su> Cc: Rodolfo Giometti <giometti@linux.it> Signed-off-by:
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Alexander Gordeev authored
Add PPS signal generator which utilizes STROBE pin of a parallel port to send PPS signals. It uses parport abstraction layer and hrtimers to precisely control the signal. [akpm@linux-foundation.org: fix build] Signed-off-by:
Rodolfo Giometti <giometti@linux.it> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by:
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Alexander Gordeev authored
Add parallel port PPS client. It uses a standard method for capturing timestamps for assert edge transitions: getting a timestamp soon after an interrupt has happened. This is not a very precise source of time information due to interrupt handling delays. However, timestamps for clear edge transitions are much more precise because the interrupt handler continuously polls hardware port until the transition is done. Hardware port operations require only about 1us so the maximum error should not exceed this value. This was my primary goal when developing this client. Clear edge capture could be disabled using clear_wait parameter. Signed-off-by:
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Alexander Gordeev authored
Add an optional feature of PPSAPI, kernel consumer support, which uses the added hardpps() function. Signed-off-by:
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Alexander Gordeev authored
MONOTONIC_RAW clock timestamps are ideally suited for frequency calculation and also fit well into the original NTP hardpps design. Now phase and frequency can be adjusted separately: the former based on REALTIME clock and the latter based on MONOTONIC_RAW clock. A new function getnstime_raw_and_real is added to timekeeping subsystem to capture both timestamps at the same time and atomically. Signed-off-by:
John Stultz <johnstul@us.ibm.com> Cc: Rodolfo Giometti <giometti@enneenne.com> Signed-off-by:
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Alexander Gordeev authored
This commit adds hardpps() implementation based upon the original one from the NTPv4 reference kernel code from David Mills. However, it is highly optimized towards very fast syncronization and maximum stickness to PPS signal. The typical error is less then a microsecond. To make it sync faster I had to throw away exponential phase filter so that the full phase offset is corrected immediately. Then I also had to throw away median phase filter because it gives a bigger error itself if used without exponential filter. Maybe we will find an appropriate filtering scheme in the future but it's not necessary if the signal quality is ok. Signed-off-by:
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Alexander Gordeev authored
Remove the code that gatheres timestamp in pps_tty_dcd_change() in case passed ts parameter is NULL because it never happens in the current code. Fix comments as well. Signed-off-by:
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Alexander Gordeev authored
Bitwise conjunction is distributive so we can simplify some conditions. Signed-off-by:
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