usb: musb: host: correct cppi dma channel for isoch transfer

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)

Cc: <[email protected]> # v4.2+
Reported-by: Matwey V. Kornilov <[email protected]>
Acked-by: Tony Lindgren <[email protected]>
Signed-off-by: Bin Liu <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index f02361dbfd52ea10d4102eb7e13399552715b5c9..f0931c418f833cf47624e7290937c59c8c8834e8 100644 (file)
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -1549,7 +1549,7 @@ static int musb_rx_dma_iso_cppi41(struct dma_controller *dma,
                                  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;