Patch "usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer" has been added to the 3.14-stable tree
Subsystems (2)
This is a note to let you know that I've just added the patch titled
usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-renesas_usbhs-disable-tx-irq-before-starting-tx-dmac-transfer.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.
Quoted 1 line
From
6490865c67825277b29638e839850882600b48ecMon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <[email protected]>
Date: Thu, 10 Mar 2016 11:30:15 +0900
Subject: usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
From: Yoshihiro Shimoda <[email protected]>
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.
--- drivers/usb/renesas_usbhs/fifo.c | 1 + 1 file changed, 1 insertion(+)
drivers/usb/renesas_usbhs/fifo.c +1 -0
@@ -934,6 +934,7 @@ static int usbhsf_dma_try_pop(struct usb pkt->trans = len; +usbhsf_tx_irq_ctrl (pipe,0 );INIT_WORK (&pkt->work, xfer_work);schedule_work (&pkt->work);
Patches currently in stable-queue which might be from [email protected] are
queue-3.14/usb-renesas_usbhs-avoid-null-pointer-derefernce-in-usbhsf_pkt_handler.patch queue-3.14/usb-renesas_usbhs-disable-tx-irq-before-starting-tx-dmac-transfer.patch