From 04471eb8c3158c0ad9df4b24da845a63b2e8f23a Mon Sep 17 00:00:00 2001 From: Bin Liu Date: Tue, 31 May 2016 10:05:25 -0500 Subject: [PATCH] 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: # v4.2+ Reported-by: Matwey V. Kornilov Acked-by: Tony Lindgren Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman --- drivers/usb/musb/musb_host.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index f02361dbfd52..f0931c418f83 100644 --- 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; -- 2.11.0