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Crash is seen when performing USB composition switch or USB cable
disconnect from audio source USB composition. Usage of
usb_remove_function() with audio_source_function_unbind_config()
results into deletion of audio source function from function list
in addition to unbind_config(). Fix this issue by removing
audio_source_function_unbind_config().
snd pcm device is also not created using snd_card_setup(). Hence
fix this issue by creating snd pcm device with audio_bind() and
removing same with audio_unbind().
Change-Id: Ia96da8b33b924952a962a7170e3604af37020931
Signed-off-by: Azhar Shaikh <azhars@codeaurora.org>
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audio_source driver is having two interfaces and also audio streaming
interface supports alternate settings. Only alternate setting one has
endpoint. But other two interfaces have no endpoints. Hence endpoint is
required to enable for only alternate setting one. But currently driver
is enabling endpoint whenever set_alt callback is called. Due to this,
enable endpoint will be called multiple times which causes exception.
Fix this by enabling endpoint only for alternate setting one.
Change-Id: Ib5910bf663f250250e8355bbdd746116e890f6d0
Signed-off-by: Vijayavardhan Vennapusa <vvreddy@codeaurora.org>
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>
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- Music takes more time to resume on speaker after USB unplug.
- USB driver does not support the Non-blocking mode i.e.
MMAP mode. When the USB is unplugged, write is blocked for
10 sec, and after a 10 sec timeout, the USB accessory device
is closed and the device switch to speaker occurs.
- Changes were made to implement the MMAP interface in the
driver that is Non-blocking. Hence, the write thread gets
unblocked immediately and the switch to speaker is
instantaneous.
CRs-Fixed: 453134
Change-Id: I3020f56db31e78aed114e6a4021f519b1ed234c3
Signed-off-by: Deepa Madiregama <dmadireg@codeaurora.org>
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>
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Race is happening when both audio_pcm_close() and audio_send()
executes in parallel.
When the PCM session is closed, the substream attribute of the
audio_dev structure is set to NULL in audio_pcm_close().
As there is no synchronization protection for the audio_dev subtream
attributes in audio_send(), it is causing NULL pointer dereference.
Hence fixing the issue by adding proper synchronization protection
for the audio_dev subtream attributes in audio_send().
CRs-Fixed: 613498
Change-Id: Id9ab0d4e347b8bb2f551f9033829e541bdcaf0e8
Signed-off-by: ChandanaKishori Chiluveru <cchilu@codeaurora.org>
Signed-off-by: Tarun Gupta <tarung@codeaurora.org>
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3.18 kernel has reorganized drivers/usb/gadget
directory. Moving gadget functions drivers from
drivers/usb/gadget to drivers/usb/gadget/function
Signed-off-by: Badhri Jagan Sridharan <Badhri@google.com>
Change-Id: I1eab0190f8d42e3be1b4e91ad3bc3a2dc853b0ef
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