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2007-10-16[ALSA] Changed Jaroslav Kysela's e-mail from perex@suse.cz to perex@perex.czJaroslav Kysela
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
2007-10-16[ALSA] sound: snd_register_device_for_dev fixMariusz Kozlowski
snd_register_device_for_dev() can oops when device_create() returns ERR_PTR(err). Scenario: preg->dev = device_create(...); /* fails */ if (preg->dev) /* contains ERR_PTR(err) */ dev_set_drvdata(preg->dev, private_data); and dev_set_drvdata() looks like this: static inline void dev_set_drvdata (struct device *dev, void *data) { dev->driver_data = data; <--- boom } This patch should prevent that. Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] schedule_timeout() fix for core/seq/seq_instr.cRene Herman
Replace schedule_timeout() with schedule_timeout_uninterruptible() to avoid signals in loop. Signed-off-by: Rene Herman <rene.herman@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] unexport snd_ctl_elem_{read,write}Adrian Bunk
snd_ctl_elem_{read,write} no longer have any modular users Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] pcm: add snd_pcm_rate_to_rate_bit() helperClemens Ladisch
Add a snd_pcm_rate_to_rate_bit() function to factor out common code used by several drivers. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] pcm: merge rates[] from pcm_misc.c and pcm_native.cClemens Ladisch
Merge the rates[] arrays from pcm_misc.c and pcm_native.c because they are both the same. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] seq_midi_event: fix parsing of F9/FD bytesClemens Ladisch
Check for a valid event type when encoding a system real-time message to prevent the bytes F9 or FD resulting in an empty sequencer message. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] seq_midi_event: fix parsing of missing data bytesClemens Ladisch
Reorganize the encoder logic to prevent status bytes that appear where data bytes are expected from being interpreted as data bytes. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] seq_midi_event: prevent running status after system messagesClemens Ladisch
Reset the event type after encoding a system message to prevent any following data bytes from being interpreted as data for a running status system message, which is not allowed in MIDI. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] seq_midi_event: fix encoding of data bytes after end of sysexClemens Ladisch
Create a new state ST_INVALID for the encoder to prevent data bytes at the beginning of a stream or after a sysex message being interpreted as note-off parameters. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Add new AFMT_* formats for OSS emulationTakashi Iwai
The recent OSS includes the support for 32bit and other formats, which we already have, too. Let's define and map them. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Support 3-bytes 24bit format in PCM OSS emulationTakashi Iwai
Add the support of 3-bytes 24bit formats in PCM OSS emulation. Also removed snd_pcm_build_linear_format() function. It's exported just for OSS emulation, and now the code was changed without calling this function. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Simplify the format conversion in PCM OSS emulationTakashi Iwai
Simplify the format conversion code in PCM OSS emulation. This patch also adds the support of 3bytes 24bit formats with linear and mulaw, but they are not enabled in pcm_plugin.c yet. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Remove ifdefs from OSS PCM emulation codesTakashi Iwai
Fix Makefile to compile files conditionally to CONFIG_SND_PCM_OSS_PLUGINS, and remove unneeded ifdefs in these files. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] seq: resource leak fix and various code cleanupsEugene Teo
This patch fixes: 1) a resource leak (CID: 1817) 2) various code cleanups Signed-off-by: Eugene Teo <eugeneteo@kernel.sg> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Clean up MakefileTakashi Iwai
Clean up Makefile using xxx- style instead of ifeq(CONFIG_XXX,y). Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Fix build error without CONFIG_HAS_DMATakashi Iwai
The recent change of include/asm-generic/dma-mapping-broken.h breaks the build without CONFIG_HAS_DMA. This patch is an ad hoc fix. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Add helper functions for frequently used callbacksTakashi Iwai
Added helper functions for frequenty used callbacks: snd_ctl_boolean_mono_info() and snd_ctl_boolean_stereo_info() Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-10-16[ALSA] Clean up duplicate includes in sound/core/Jesper Juhl
This patch cleans up duplicate includes in sound/core/ Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-09-24Convert snd-page-alloc proc file to use seq_fileTakashi Iwai
Use seq_file for the proc file read/write of snd-page-alloc module. This automatically fixes bugs in the old proc code. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-20[ALSA] timer: check for incorrect device state in non-debug compiles, tooClemens Ladisch
Convert the snd_assert()s to simple if()s to prevent crashes when one of the timer instance ioctls is called before the file is bound to a timer device. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-07-20[ALSA] Fix substream to check in PCM drainTakashi Iwai
The check of a substream in snd_pcm_drain() might not be always correct since runtime can point a different substream (although the PCM state of each linked substream should be same, in theory). This patch fixes it. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-07-20[ALSA] Fix invalid schedule_timeout_interruptible()Takashi Iwai
Fixed the invalid use of schedule_timeout_interruptible() without checking pending signals. Simply replaced with schedule_timeout(). Suggestions thanks to Jeff Garzik. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-07-19some kmalloc/memset ->kzalloc (tree wide)Yoann Padioleau
Transform some calls to kmalloc/memset to a single kzalloc (or kcalloc). Here is a short excerpt of the semantic patch performing this transformation: @@ type T2; expression x; identifier f,fld; expression E; expression E1,E2; expression e1,e2,e3,y; statement S; @@ x = - kmalloc + kzalloc (E1,E2) ... when != \(x->fld=E;\|y=f(...,x,...);\|f(...,x,...);\|x=E;\|while(...) S\|for(e1;e2;e3) S\) - memset((T2)x,0,E1); @@ expression E1,E2,E3; @@ - kzalloc(E1 * E2,E3) + kcalloc(E1,E2,E3) [akpm@linux-foundation.org: get kcalloc args the right way around] Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Acked-by: Russell King <rmk@arm.linux.org.uk> Cc: Bryan Wu <bryan.wu@analog.com> Acked-by: Jiri Slaby <jirislaby@gmail.com> Cc: Dave Airlie <airlied@linux.ie> Acked-by: Roland Dreier <rolandd@cisco.com> Cc: Jiri Kosina <jkosina@suse.cz> Acked-by: Dmitry Torokhov <dtor@mail.ru> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org> Acked-by: Pierre Ossman <drzeus-list@drzeus.cx> Cc: Jeff Garzik <jeff@garzik.org> Cc: "David S. Miller" <davem@davemloft.net> Acked-by: Greg KH <greg@kroah.com> Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19unregister_chrdev(): ignore the return valueAkinobu Mita
unregister_chrdev() always returns 0. There is no need to check the return value. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-11[ALSA] pcm_native: lockdep warning when launching jackFrederik Deweerdt
When launching 'jackd -d alsa', lockdep issues the following warning: [39701.405086] ============================================= [39701.405093] [ INFO: possible recursive locking detected ] [39701.405107] 2.6.21-rc5-mm4 #2 [39701.405109] --------------------------------------------- [39701.405112] jackd/17366 is trying to acquire lock: [39701.405114] (&substream->self_group.lock){....}, at: [<c034d3c0>] snd_pcm_action_group+0x90/0x240 [39701.405131] [39701.405131] but task is already holding lock: [39701.405134] (&substream->self_group.lock){....}, at: [<c034d63f>] snd_pcm_action_lock_irq+0x3f/0xb0 [39701.405141] [39701.405142] other info that might help us debug this: [39701.405145] 3 locks held by jackd/17366: [39701.405147] #0: (snd_pcm_link_rwlock){....}, at: [<c034d627>] snd_pcm_action_lock_irq+0x27/0xb0 [39701.405155] #1: (&substream->group->lock){....}, at: [<c034d638>] snd_pcm_action_lock_irq+0x38/0xb0 [39701.405163] #2: (&substream->self_group.lock){....}, at: [<c034d63f>] snd_pcm_action_lock_irq+0x3f/0xb0 [39701.405171] [39701.405171] stack backtrace: [39701.405174] [<c0103b8a>] show_trace_log_lvl+0x1a/0x30 [39701.405179] [<c0104912>] show_trace+0x12/0x20 [39701.405183] [<c01049c6>] dump_stack+0x16/0x20 [39701.405187] [<c013b980>] __lock_acquire+0xbd0/0x1040 [39701.405193] [<c013be60>] lock_acquire+0x70/0x90 [39701.405197] [<c0407846>] _spin_lock+0x36/0x50 [39701.405203] [<c034d3c0>] snd_pcm_action_group+0x90/0x240 [39701.405207] [<c034d653>] snd_pcm_action_lock_irq+0x53/0xb0 [39701.405211] [<c035046f>] snd_pcm_common_ioctl1+0x35f/0xfb0 [39701.405215] [<c0351544>] snd_pcm_playback_ioctl1+0x34/0x420 [39701.405219] [<c03519f3>] snd_pcm_playback_ioctl+0x43/0x50 [39701.405223] [<c017ecc8>] do_ioctl+0x28/0x80 [39701.405229] [<c017ed77>] vfs_ioctl+0x57/0x290 [39701.405233] [<c017efe9>] sys_ioctl+0x39/0x60 [39701.405237] [<c0102bf4>] sysenter_past_esp+0x5d/0x99 [39701.405240] ======================= The attached lockdep annotation silences the warning. Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-05-11[ALSA] is_power_of_2 in rtctimer.cvignesh babu
Replacing (n & (n-1)) in the context of power of 2 checks with is_power_of_2 Signed-off-by: vignesh babu <vignesh.babu@wipro.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-05-11[ALSA] Add snd_pcm_group_for_each_entry() for code cleanupTakashi Iwai
Added a new macro snd_pcm_group_for_each_entry() just for code cleanup. Old macros, snd_pcm_group_for_each() and snd_pcm_group_substream_entry(), are removed. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-05-09misc doc and kconfig typosMatt LaPlante
Fix various typos in kernel docs and Kconfigs, 2.6.21-rc4. Signed-off-by: Matt LaPlante <kernel1@cyberdogtech.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
2007-05-08header cleaning: don't include smp_lock.h when not usedRandy Dunlap
Remove includes of <linux/smp_lock.h> where it is not used/needed. Suggested by Al Viro. Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc, sparc64, and arm (all 59 defconfigs). Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-02PCI: Cleanup the includes of <linux/pci.h>Jean Delvare
I noticed that many source files include <linux/pci.h> while they do not appear to need it. Here is an attempt to clean it all up. In order to find all possibly affected files, I searched for all files including <linux/pci.h> but without any other occurence of "pci" or "PCI". I removed the include statement from all of these, then I compiled an allmodconfig kernel on both i386 and x86_64 and fixed the false positives manually. My tests covered 66% of the affected files, so there could be false positives remaining. Untested files are: arch/alpha/kernel/err_common.c arch/alpha/kernel/err_ev6.c arch/alpha/kernel/err_ev7.c arch/ia64/sn/kernel/huberror.c arch/ia64/sn/kernel/xpnet.c arch/m68knommu/kernel/dma.c arch/mips/lib/iomap.c arch/powerpc/platforms/pseries/ras.c arch/ppc/8260_io/enet.c arch/ppc/8260_io/fcc_enet.c arch/ppc/8xx_io/enet.c arch/ppc/syslib/ppc4xx_sgdma.c arch/sh64/mach-cayman/iomap.c arch/xtensa/kernel/xtensa_ksyms.c arch/xtensa/platform-iss/setup.c drivers/i2c/busses/i2c-at91.c drivers/i2c/busses/i2c-mpc.c drivers/media/video/saa711x.c drivers/misc/hdpuftrs/hdpu_cpustate.c drivers/misc/hdpuftrs/hdpu_nexus.c drivers/net/au1000_eth.c drivers/net/fec_8xx/fec_main.c drivers/net/fec_8xx/fec_mii.c drivers/net/fs_enet/fs_enet-main.c drivers/net/fs_enet/mac-fcc.c drivers/net/fs_enet/mac-fec.c drivers/net/fs_enet/mac-scc.c drivers/net/fs_enet/mii-bitbang.c drivers/net/fs_enet/mii-fec.c drivers/net/ibm_emac/ibm_emac_core.c drivers/net/lasi_82596.c drivers/parisc/hppb.c drivers/sbus/sbus.c drivers/video/g364fb.c drivers/video/platinumfb.c drivers/video/stifb.c drivers/video/valkyriefb.c include/asm-arm/arch-ixp4xx/dma.h sound/oss/au1550_ac97.c I would welcome test reports for these files. I am fine with removing the untested files from the patch if the general opinion is that these changes aren't safe. The tested part would still be nice to have. Note that this patch depends on another header fixup patch I submitted to LKML yesterday: [PATCH] scatterlist.h needs types.h http://lkml.org/lkml/2007/3/01/141 Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-02-14[PATCH] remove many unneeded #includes of sched.hTim Schmielau
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12[PATCH] mark struct file_operations const 9Arjan van de Ven
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-09[PATCH] Fix breakage with CONFIG_SYSFS_DEPRECATEDTakashi Iwai
The fix for sysfs breakage with CONFIG_SYSFS_DEPRECATED was flown away by the conflicted merge of the ALSA git tree. The patch below fixes it again. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] Fix possible deadlocks in sequencer at removal of portsTakashi Iwai
Fix possible rwsem deadlocks in sequencer code at removal of sequencer ports. The list_lock of port group can be double locked. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] Fix possible invalid memory access in PCM coreTakashi Iwai
snd_internval_list() may access invalid memory in the case count = 0 is given. It shouldn't be passed, but it'd better to make the code a bit more robust. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] snd_hwdep_release() racefixKarsten Wiese
snd_card_file_remove() can free the snd_card. Touch hw->* only before calling snd_card_file_remove(). Unrelated: Allow hwdep devices not to have own ops.release(); Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] Remove useless reference to obsolete KERNELDRobert P. J. Day
Remove the final useless reference to the obsolete KERNELD feature. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] cleanup and error reporting for sound/core/init.cOliver Neukum
Make the control flow clear with indentation, adds some comments and improves error reporting. Signed-off-by: Oliver Neukum <oneukum@suse.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] Add PCI quirk list helper functionTakashi Iwai
Added a helper function snd_pci_quirk_lookup() to look up PCI SSID quirk list. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] make sound/core/control.c:snd_ctl_new() staticAdrian Bunk
Now that everyone uses snd_ctl_new1() and noone is using snd_ctl_new() anymore, we can make it static. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] pcm core: add prealloc_max file to substream directory to show ↵Jaroslav Kysela
maximum DMA size Users ask us many times about the maximum DMA size for PCM devices. This file gives them a hint in KB. Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] alsa core: convert to list_for_each_entry*Johannes Berg
This patch converts most uses of list_for_each to list_for_each_entry all across alsa. In some place apparently an item can be on a list with different pointers so of course that isn't compatible with list_for_each, I therefore didn't touch those places. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] alsa core: add struct device pointer to struct snd_pcmJohannes Berg
This patch adds a struct device pointer to struct snd_pcm in order to be able to give it a different device than the card. It defaults to the card's device, however, so it should behave identically for drivers not touching the field. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-02-09[ALSA] allow registering an alsa device with struct device pointerJohannes Berg
This patch adds snd_register_device_for_dev taking a struct device pointer to link the new device to and makes snd_register_device a simple static inline wrapper around it. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2007-01-29[PATCH] ALSA: Fix sysfs breakageTakashi Iwai
The recent change for a new sysfs tree with card* object breaks the /sys/class/sound tree if CONFIG_SYSFS_DEPRECATED is enabled. The device in each entry doesn't point the correct device object: /sys/class/sound ... |-- pcmC0D0c | |-- dev | |-- device -> ../../../class/sound/card0 | |-- pcm_class | |-- power | | `-- wakeup | |-- subsystem -> ../../../class/sound | `-- uevent Also, this change breaks some drivers (like sound/arm/*) referring card->dev directly to obtain the device object for memory handling. This patch reverts the semantics of card->dev to the former version, which points to a real device object. The card* object is stored in a new card->card_dev field, instead. The device parent is chosen either card->dev or card->card_dev according to CONFIG_SYSFS_DEPRECATED to keep the tree compatibility. Also, card* isn't created if CONFIG_SYSFS_DEPRECATED is enabled. The reason of card* object is a root of all beloing devices, and it makes little sense if each sound device points to the real device object directly. Signed-off-by: Takashi Iwai <tiwai@suse.de> Acked-by: Monty Montgomery <xiphmont@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2006-12-20[ALSA] sound: fix PCM substream listAkinobu Mita
If snd_pcm_new_stream() fails to initalize a substream (if snd_pcm_substream_proc_init() returns error), snd_pcm_new_stream() immediately return without unlinking that kfree()d substram. It causes oops when snd_pcm_free() iterates the list of substream to free them by invalid reference. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-12-20[ALSA] sound: initialize rawmidi substream listAkinobu Mita
If snd_rawmidi_new() failed to allocate substreams for input (snd_rawmidi_alloc_substreams() failed to populate a &rmidi->streams[SNDRV_RAWMIDI_STREAM_INPUT]), it will try to free rawmidi instance by snd_rawmidi_free(). But it will cause oops because snd_rawmidi_free() tries to free both of substreams list but list for output (&rmidi->streams[SNDRV_RAWMIDI_STREAM_OUTPUT]) is not initialized yet. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-12-20[ALSA] Fix races in PCM OSS emulationTakashi Iwai
Fixed the race among multiple threads accessing the OSS PCM instance concurrently by simply introducing a mutex for protecting a setup of the PCM. Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-12-20[ALSA] sound/core/control.c: remove dead codeAdrian Bunk
This patch removes some obviously dead code spotted by the Coverity checker. Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
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