This is a note to let you know that I've just added the patch titled
usb: musb: host: correct cppi dma channel for isoch transfer
to the 4.4-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-musb-host-correct-cppi-dma-channel-for-isoch-transfer.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 04471eb8c3158c0ad9df4b24da845a63b2e8f23a Mon Sep 17 00:00:00 2001
From: Bin Liu <b-liu@xxxxxx>
Date: Tue, 31 May 2016 10:05:25 -0500
Subject: usb: musb: host: correct cppi dma channel for isoch transfer
From: Bin Liu <b-liu@xxxxxx>
commit 04471eb8c3158c0ad9df4b24da845a63b2e8f23a upstream.
Incorrect cppi dma channel is referenced in musb_rx_dma_iso_cppi41(),
which causes kernel NULL pointer reference oops later when calling
cppi41_dma_channel_program().
Fixes: 069a3fd (usb: musb: Remove ifdefs for musb_host_rx in musb_host.c
part1)
Reported-by: Matwey V. Kornilov <matwey@xxxxxxxxxx>
Acked-by: Tony Lindgren <tony@xxxxxxxxxxx>
Signed-off-by: Bin Liu <b-liu@xxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/musb/musb_host.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1556,7 +1556,7 @@ static int musb_rx_dma_iso_cppi41(struct
struct urb *urb,
size_t len)
{
- struct dma_channel *channel = hw_ep->tx_channel;
+ struct dma_channel *channel = hw_ep->rx_channel;
void __iomem *epio = hw_ep->regs;
dma_addr_t *buf;
u32 length, res;
Patches currently in stable-queue which might be from b-liu@xxxxxx are
queue-4.4/usb-gadget-fix-spinlock-dead-lock-in-gadgetfs.patch
queue-4.4/usb-musb-stop-bulk-endpoint-while-queue-is-rotated.patch
queue-4.4/usb-musb-ensure-rx-reinit-occurs-for-shared_fifo-endpoints.patch
queue-4.4/usb-musb-host-correct-cppi-dma-channel-for-isoch-transfer.patch
queue-4.4/usb-musb-only-restore-devctl-when-session-was-set-in-backup.patch
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