usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer

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[ Upstream commit 6490865c67 ]

This patch adds a code to surely disable TX IRQ of the pipe before
starting TX DMAC transfer. Otherwise, a lot of unnecessary TX IRQs
may happen in rare cases when DMAC is used.

Fixes: e73a989 ("usb: renesas_usbhs: add DMAEngine support")
Cc: <stable@vger.kernel.org> # v3.1+
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>

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Yoshihiro Shimoda 2016-03-10 11:30:15 +09:00 • committed by Sasha Levin

parent 250443d81e

commit 5c05999537

1 changed files with 1 additions and 0 deletions

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drivers/usb/renesas_usbhs/fifo.c

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