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Bin Liu authored
commit 0090114d upstream. The CPPI 4.1 driver polls register to workaround the premature TX interrupt issue, but it causes audio playback underrun when triggered in Isoch transfers. Isoch doesn't do back-to-back transfers, the TX should be done by the time the next transfer is scheduled. So skip this polling workaround for Isoch transfer. Fixes: a655f481 ("usb: musb: musb_cppi41: handle pre-mature TX complete interrupt") Reported-by:
Alexandre Bailon <abailon@baylibre.com> Acked-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Tested-by:
Alexandre Bailon <abailon@baylibre.com> Signed-off-by:
Bin Liu <b-liu@ti.com> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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