Patch "usb: musb: host: correct cppi dma channel for isoch transfer" has been added to the 4.6-stable tree

Patch "usb: musb: host: correct cppi dma channel for isoch transfer" has been added to the 4.6-stable tree

[gregkh]

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 4.6-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-4.6 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 04471eb8c3158c0ad9df4b24da845a63b2e8f23a Mon Sep 17 00:00:00 2001
From: Bin Liu <b-liu@ti.com>
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@ti.com>

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@sai.msu.ru>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 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@ti.com are

queue-4.6/usb-gadget-fix-spinlock-dead-lock-in-gadgetfs.patch
queue-4.6/usb-musb-stop-bulk-endpoint-while-queue-is-rotated.patch
queue-4.6/usb-musb-ensure-rx-reinit-occurs-for-shared_fifo-endpoints.patch
queue-4.6/usb-musb-host-correct-cppi-dma-channel-for-isoch-transfer.patch
queue-4.6/usb-musb-only-restore-devctl-when-session-was-set-in-backup.patch