From: <gregkh@linuxfoundation.org>
To: yoshihiro.shimoda.uh@renesas.com, felipe.balbi@linux.intel.com,
gregkh@linuxfoundation.org
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer" has been added to the 4.5-stable tree
Date: Sun, 17 Apr 2016 03:27:07 -0700 [thread overview]
Message-ID: <1460888827198188@kroah.com> (raw)
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 4.5-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-4.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 6490865c67825277b29638e839850882600b48ec Mon Sep 17 00:00:00 2001
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Date: Thu, 10 Mar 2016 11:30:15 +0900
Subject: usb: renesas_usbhs: disable TX IRQ before starting TX DMAC transfer
From: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
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: e73a989 ("usb: renesas_usbhs: add DMAEngine support")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/renesas_usbhs/fifo.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/usb/renesas_usbhs/fifo.c
+++ b/drivers/usb/renesas_usbhs/fifo.c
@@ -890,6 +890,7 @@ static int usbhsf_dma_prepare_push(struc
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 yoshihiro.shimoda.uh@renesas.com are
queue-4.5/usb-renesas_usbhs-fix-to-avoid-using-a-disabled-ep-in-usbhsg_queue_done.patch
queue-4.5/usb-renesas_usbhs-avoid-null-pointer-derefernce-in-usbhsf_pkt_handler.patch
queue-4.5/usb-renesas_usbhs-disable-tx-irq-before-starting-tx-dmac-transfer.patch
reply other threads:[~2016-04-17 11:06 UTC|newest]
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