kernel/git/stable/linux.git/sound/oss, branch linux-3.18.y

sound/oss: fix deadlock in sequencer_ioctl(SNDCTL_SEQ_OUTOFBAND)

2015-06-09T17:43:40+00:00

[ Upstream commit bc26d4d06e337ade069f33d3f4377593b24e6e36 ] A deadlock can be initiated by userspace via ioctl(SNDCTL_SEQ_OUTOFBAND) on /dev/sequencer with TMR_ECHO midi event. In this case the control flow is: sound_ioctl() -> case SND_DEV_SEQ: case SND_DEV_SEQ2: sequencer_ioctl() -> case SNDCTL_SEQ_OUTOFBAND: spin_lock_irqsave(&lock,flags); play_event(); -> case EV_TIMING: seq_timing_event() -> case TMR_ECHO: seq_copy_to_input() -> spin_lock_irqsave(&lock,flags); It seems that spin_lock_irqsave() around play_event() is not necessary, because the only other call location in seq_startplay() makes the call without acquiring spinlock. So, the patch just removes spinlocks around play_event(). By the way, it removes unreachable code in seq_timing_event(), since (seq_mode == SEQ_2) case is handled in the beginning. Compile tested only. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov Signed-off-by: Takashi Iwai Signed-off-by: Sasha Levin

Merge tag 'sound-fix-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

2014-08-16T00:06:56+00:00

Pull sound fixes from Takashi Iwai: "Here is the additional fix patches that have been queued up since the previous pull request. A few HD-audio fixes, a USB-audio quirk addition, and a couple of trivial cleanup for the legacy OSS codes" * tag 'sound-fix-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Set TLV_DB_SCALE_MUTE bit for cx5051 vmaster ALSA: hda/ca0132 - Don't try loading firmware at resume when already failed ALSA: hda - Fix pop noises on reboot for Dell XPS 13 9333 ALSA: hda - Set internal mic as default input source on Dell XPS 13 9333 ALSA: usb-audio: fix BOSS ME-25 MIDI regression ALSA: hda - Fix parsing of CMI8888 codec ALSA: hda - Fix probing and stuttering on CMI8888 HD-audio controller ALSA: hda/realtek - Fixed ALC286/ALC288 recording delay for Headset Mic sound: oss: Remove typedefs wanc_info and wavnc_port_info sound: oss: uart401: Remove typedef uart401_devc

PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use

2014-08-12T18:15:14+00:00

We should prefer `struct pci_device_id` over `DEFINE_PCI_DEVICE_TABLE` to meet kernel coding style guidelines. This issue was reported by checkpatch. A simplified version of the semantic patch that makes this change is as follows (http://coccinelle.lip6.fr/): // @@ identifier i; declarer name DEFINE_PCI_DEVICE_TABLE; initializer z; @@ - DEFINE_PCI_DEVICE_TABLE(i) + const struct pci_device_id i[] = z; // [bhelgaas: add semantic patch] Signed-off-by: Benoit Taine Signed-off-by: Bjorn Helgaas

sound: oss: Remove typedefs wanc_info and wavnc_port_info

2014-08-06T14:42:40+00:00

The Linux kernel coding style guidelines suggest not using typedefs for structure types. This patch gets rid of the typedefs for wanc_info and wavnc_port_info. A simplified version of the Coccinelle semantic patch that finds the case is: @tn@ identifier i; type td; @@ -typedef struct i { ... } -td ; @@ type tn.td; identifier tn.i; @@ -td + struct i Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Takashi Iwai

sound: oss: uart401: Remove typedef uart401_devc

2014-08-06T14:42:29+00:00

The Linux kernel coding style guidelines suggest not using typedefs for structure types. This patch gets rid of the typedef for uart401_devc. The following Coccinelle semantic patch detects the case. @tn@ identifier i; type td; @@ -typedef struct i { ... } -td ; @@ type tn.td; identifier tn.i; @@ -td + struct i Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Takashi Iwai

sound/oss/pss: Remove typedefs pss_mixerdata and pss_confdata

2014-08-05T18:08:00+00:00

The Linux kernel coding style guidelines suggest not using typedefs for structure types. This patch gets rid of the typedefs for pss_mixerdata and pss_confdata. The following Coccinelle semantic patch is used to make the change. @tn@ identifier i; type td; @@ -typedef struct i { ... } -td ; @@ type tn.td; identifier tn.i; @@ -td + struct i Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Takashi Iwai

sound/oss/opl3: Remove typedef opl_devinfo

2014-08-05T18:07:59+00:00

This typedef is unnecessary and should just be removed as they are never used. The following Coccinelle semantic patch detects the case. @tn@ identifier i; type td; @@ -typedef struct i { ... } -td ; @@ type tn.td; identifier tn.i; @@ -td + struct i Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Signed-off-by: Takashi Iwai

sound: oss: mpu401.c: Cleaning up variable is set more than once

2014-06-25T12:32:03+00:00

A struct member variable is set to the same value more than once This was found using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist Signed-off-by: Takashi Iwai

sound: oss: mpu401.c: Cleaning up missing break in a case

2014-06-24T12:16:58+00:00

Added a missed break in a case statement This was found using a static code analysis program called cppcheck. Signed-off-by: Rickard Strandqvist Signed-off-by: Takashi Iwai

sound: remove checks for CONFIG_BCM_CS4297A_CSWARM

2014-05-30T08:11:55+00:00

Checks for CONFIG_BCM_CS4297A_CSWARM were added in v2.6.11. The related Kconfig symbol was never added so these checks always evaluated to true. Remove them. Signed-off-by: Paul Bolle Signed-off-by: Takashi Iwai