usb: musb: fix cppi channel teardown for isoch transfer

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[ Upstream commit b431ba8803 ]

After a few iterations of start/stop UVC camera streaming, the streaming
stops.

This patch adds 250us delay in the cppi channel abort path to let cppi
drain properly.

Using 50us delay seems to be too aggressive, some webcams are still
broken. 250us is the original value used in TI 3.2 kernel.

Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

...

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Bin Liu 2015-08-24 15:28:37 -05:00 • committed by Sasha Levin

parent 7059616548

commit 111bbf69b6

1 changed files with 3 additions and 0 deletions

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drivers/usb/musb/musb_cppi41.c

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