Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 46e081b3 authored by Yoshihiro Shimoda's avatar Yoshihiro Shimoda Committed by Greg Kroah-Hartman
Browse files

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



commit 6490865c67825277b29638e839850882600b48ec upstream.

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: e73a9891 ("usb: renesas_usbhs: add DMAEngine support")
Signed-off-by: default avatarYoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f10d1592

drivers/usb/renesas_usbhs/fifo.c

+1 −0
Original line number Diff line number Diff line
@@ -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);