diff options
| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2016-03-10 11:30:15 +0900 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2016-04-20 01:03:42 -0400 |
| commit | 5c059995372c2861bb71cd761fc50cf773015d14 (patch) | |
| tree | e637f2c9b9b509c91c2d3ea1325a0b28524a3246 /drivers/usb | |
| parent | 250443d81ea8150c3445c87a291a3ef482cd3ad7 (diff) | |
usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
[ Upstream commit 6490865c67825277b29638e839850882600b48ec ]
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>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/renesas_usbhs/fifo.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/renesas_usbhs/fifo.c b/drivers/usb/renesas_usbhs/fifo.c index 32df73820726..f1893e08e51a 100644 --- a/drivers/usb/renesas_usbhs/fifo.c +++ b/drivers/usb/renesas_usbhs/fifo.c @@ -890,6 +890,7 @@ static int usbhsf_dma_prepare_push(struct usbhs_pkt *pkt, int *is_done) pkt->trans = len; + usbhsf_tx_irq_ctrl(pipe, 0); INIT_WORK(&pkt->work, xfer_work); schedule_work(&pkt->work); |