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- 30 Mar, 2009 10 commits
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Nicola Soranzo authored
Lots of coding style fixes and a typo correction for em28xx. [dougsland@redhat.com: fixed a reject due to a change on em28xx-audio.c] Signed-off-by:
Nicola Soranzo <nsoranzo@tiscali.it> Signed-off-by:
Douglas Schilling Landgraf <dougsland@redhat.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Douglas Schilling Landgraf authored
Added macros EM28XX_START_AUDIO and EM28XX_STOP_AUDIO for em28xx_cmd(). Signed-off-by:
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Alexey Klimov authored
Patch removes printk and place em28xx_errdev macros to provide information about driver name to dmesg. Signed-off-by:
Alexey Klimov <klimov.linux@gmail.com> Signed-off-by:
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Douglas Schilling Landgraf authored
Added lock for users count Signed-off-by:
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Douglas Schilling Landgraf authored
Added spinlock for trigger session Signed-off-by:
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Robert Krakora authored
Essentially if a snd_em28xx_capture_trigger() stop followed by a snd_em28xx_capture_trigger() start would not yield any data because there was some logic put in with an adev->shutdown variable which did not seem warranted in my humble opinion. It would cause snd_em28xx_capture_trigger start never to start up the audio stream until the device was closed and reopened again. Upon re-opening the device adev->shutdown is reset and audio data would again flow. Signed-off-by:
Robert Krakora <rob.krakora@messagenetsystems.com> Signed-off-by:
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Robert Krakora authored
Fix for em28xx memory leak and function rename Signed-off-by:
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Douglas Schilling Landgraf authored
Removed bad check. Thanks to Robert Krakora <rob.krakora@messagenetsystems.com> to report that. Signed-off-by:
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Douglas Schilling Landgraf authored
Just call em28xx_isoc_audio_deinit() if em28xx sent a usb_submit(). Signed-off-by:
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Douglas Schilling Landgraf authored
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- 27 Feb, 2009 1 commit
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Nicola Soranzo authored
As explained in "Writing an ALSA driver" (T. Iwai), audio drivers should set the struct device for the card before registering the card instance. This will add the correct /sys/class/sound/cardN/device symlink, so HAL can see the device and ConsoleKit sets its ACL permissions for the logged-in user. For em28xx audio capture cards found e.g. in Hauppauge WinTV-HVR-900 (R2), this patch fixes errors like: ALSA lib pcm_hw.c:1429:(_snd_pcm_hw_open) Invalid value for card Error opening audio: Permission denied when running mplayer as a normal user. Signed-off-by:
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- 29 Jan, 2009 3 commits
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Robert Krakora authored
Trace: (Provided by Douglas) BUG: sleeping function called from invalid context at drivers/usb/core/urb.c:558 in_atomic():0, irqs_disabled():1 Pid: 4918, comm: sox Not tainted 2.6.27.5 #1 [<c04246d8>] __might_sleep+0xc6/0xcb [<c058c8b0>] usb_kill_urb+0x1a/0xd8 [<c0488e68>] ? __kmalloc+0x9b/0xfc [<c0488e85>] ? __kmalloc+0xb8/0xfc [<c058cd5a>] ? usb_alloc_urb+0xf/0x31 [<f8dd638c>] em28xx_isoc_audio_deinit+0x2f/0x6c [em28xx_alsa] [<f8dd6573>] em28xx_cmd+0x1aa/0x1c5 [em28xx_alsa] [<f8dd65e1>] snd_em28xx_capture_trigger+0x53/0x68 [em28xx_alsa] [<f8aa8674>] snd_pcm_do_start+0x1c/0x23 [snd_pcm] [<f8aa85d7>] snd_pcm_action_single+0x25/0x4b [snd_pcm] [<f8aa9833>] snd_pcm_action+0x6a/0x76 [snd_pcm] [<f8aa98f5>] snd_pcm_start+0x14/0x16 [snd_pcm] [<f8aae10e>] snd_pcm_lib_read1+0x66/0x273 [snd_pcm] [<f8aac5a3>] ? snd_pcm_kernel_ioctl+0x46/0x5f [snd_pcm] [<f8aae4a7>] snd_pcm_lib_read+0xbf/0xcd [snd_pcm] [<f8aad774>] ? snd_pcm_lib_read_transfer+0x0/0xaf [snd_pcm] [<f89feeb6>] snd_pcm_oss_read3+0x99/0xdc [snd_pcm_oss] [<f89fef9c>] snd_pcm_oss_read2+0xa3/0xbf [snd_pcm_oss] [<c064169d>] ? _cond_resched+0x8/0x32 [<f89ff0be>] snd_pcm_oss_read+0x106/0x150 [snd_pcm_oss] [<f89fefb8>] ? snd_pcm_oss_read+0x0/0x150 [snd_pcm_oss] [<c048c6e2>] vfs_read+0x81/0xdc [<c048c7d6>] sys_read+0x3b/0x60 [<c04039bf>] sysenter_do_call+0x12/0x34 ======================= The culprit in the trace is snd_pcm_action() which invokes a spin lock which disables pre-emption which disables an IRQ which causes the __might_sleep() function to fail the irqs_disabled() test. Since pre-emption is enabled then it is safe to de-allocate the memory if you first unlink each URB. In this instance you are safe since pre-emption is disabled. If pre-emption and irqs are not disabled then call usb_kill_urb(), else call usb_unlink_urb(). Thanks to Douglas for tracking down this bug originally!!! [dougsland@redhat.com: Fixed codyingstyle] Signed-off-by:
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Devin Heitmueller authored
Revert a change made in change 9743 which resulted in a kernel panic in some cases on shutdown of the audio stream. First discovered when working on the Pinnacle 880e support, and later reproduced by a user on the mailing list with the HVR-900 as well. Signed-off-by:
Devin Heitmueller <dheitmueller@linuxtv.org> Signed-off-by:
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Robert Krakora authored
em28xx: Fix audio URB transfer buffer memory leak and race condition/corruption of capture pointer Leak fix kindly contributed by Pádraig Brady. Signed-off-by:
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- 12 Jan, 2009 1 commit
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Takashi Iwai authored
Convert from snd_card_new() to the new snd_card_create() function. Signed-off-by:Takashi Iwai <tiwai@suse.de>
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- 02 Jan, 2009 1 commit
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Mauro Carvalho Chehab authored
Some devices require different setups on struct_audio. Due to that, we may need to change some fields at dev.adev during device probe. So, this patch moves the dynamic memory allocation of adev at em28xx-alsa to the dynamic allocation of struct em28xx dev that happens during device probe. Signed-off-by:
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- 29 Dec, 2008 3 commits
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Devin Heitmueller authored
Rework the logic so that the em28xx-alsa module does not get loaded for devices that don't support analog audio (such as the em2874) Signed-off-by:
Devin Heitmueller <devin.heitmueller@gmail.com> Signed-off-by:
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Devin Heitmueller authored
Remove unused variable from em28xx-audio.c Fix warning for unused "ret" variable Signed-off-by:
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Mauro Carvalho Chehab authored
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- 01 Dec, 2008 2 commits
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Mauro Carvalho Chehab authored
commit 50f3beb5 fixed em28xx-alsa locking schema. However, a backport macro was kept. This patch removes the macro, since it is not needed for the module compilation against upstream. Signed-off-by:
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Douglas Schilling Landgraf authored
Replaced usb_kill_usb for usb_unlink_usb (wait until urb to fully stop require USB core to put the calling process to sleep). Oops: http://www.kerneloops.org/raw.php?rawid=71799&msgid=Signed-off-by:
Douglas Schilling Landgraf <dougsland@linuxtv.org> Signed-off-by:
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- 24 Nov, 2008 1 commit
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Mauro Carvalho Chehab authored
Instead of using a spinlock, it is better to call the proper pcm stream locking schema. Signed-off-by:
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- 05 Oct, 2008 1 commit
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Wiktor Grebla authored
Fixed audio clicking problem which could be heard when using analog tv or composite input Signed-off-by:
Wiktor Grebla <greblus@gmail.com> Signed-off-by:
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- 29 Sep, 2008 1 commit
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Douglas Schilling Landgraf authored
Free allocated memory Signed-off-by:
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- 26 Jun, 2008 2 commits
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Mauro Carvalho Chehab authored
On some alsa versions, it seems that snd_pcm_substream_chip(substream) is returning a NULL pointer. This causes an OOPS, as reported by: https://bugs.launchpad.net/ubuntu/+source/linux-ubuntu-modules-2.6.24/+bug/212271 https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/212960 This patch avoids the OOPS by not letting and open() succeed. Signed-off-by:
Mauro Carvalho Chehab <mchehab@infradead.org>
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Devin Heitmueller authored
em28xx-audio.c em28xx-dvb.c - Em28xx extensions should ensure they are being only loaded against devices that support them. Deals with case where there are multiple em28xx devices, some of which have DVB (or ALSA) support and some do not. Signed-off-by:
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- 24 Apr, 2008 1 commit
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Harvey Harrison authored
__FUNCTION__ is gcc-specific, use __func__ Signed-off-by:
Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by:
Michael Krufky <mkrufky@linuxtv.org> Signed-off-by:
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- 18 Feb, 2008 2 commits
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Mauro Carvalho Chehab authored
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Mauro Carvalho Chehab authored
sound/driver.h is already included by sound/core. Signed-off-by:
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- 25 Jan, 2008 4 commits
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Mauro Carvalho Chehab authored
Older em28xx devices does implement standard Audio Class. However, on newer devices, this were replaced by a Vendor Class. This patch autodetects that an em28xx lacks Audio Class and auto-loads em28xx-alsa, for the devices that implements only a Vendor Class. For devices with Audio Class, snd-usb-audio module will provide an ALSA interface. This patch uses the request_module_async function as defined on cx88-mpeg.c, originally wrote by Markus Rechberger. Signed-off-by: -
Mauro Carvalho Chehab authored
Also fixes the remaining CodingStyle issues that Lindent didn't fix. Signed-off-by: -
Mauro Carvalho Chehab authored
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Markus Rechberger authored
em28xx-audio module exports em28xx Vendor Class audio as an -alsa driver. This module were written based on usbaudio driver by Markus Rechberger. Recently, he acked to allow us to merge it on kernel: http://lists-archives.org/video4linux/20408-supporting-prolink-pixelview-405-dvd-maker.html Thanks to Markus Rechberger <mrechberger@gmail.com> Signed-off-by:
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