diff options
| author | Cristian Birsan <cristian.birsan@microchip.com> | 2016-02-11 08:58:17 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-07 15:23:40 +0200 |
| commit | ff44aaa9d4438d1b3b5986476a2be8efa6987b77 (patch) | |
| tree | e3d1ee60015421e167e12be9899d3fec28fcc3f5 /drivers/usb | |
| parent | 3e3809d03c25ffbc082e8be31b0ac1ce3e3eea10 (diff) | |
usb: musb: Fix DMA desired mode for Mentor DMA engine
commit bba40e6948b94cba71965285fbac31bd078c024a upstream.
Commit 754fe4a92c07 ("usb: musb: Remove ifdefs for TX DMA for musb_host.c")
introduces a problem setting the desired channel mode for the Mentor DMA
engine.
There is a case where an address is incorrectly assigned to the DMA
channel desired mode when it should instead be assigned the actual mode
value. This results in the value of channel->desired_mode not being
correct.
Acked-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Cristian Birsan <cristian.birsan@microchip.com>
Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
Cc: Adam Ford <aford173@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/musb_host.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c index 59a63a0b7985..e9c69f9ee09a 100644 --- a/drivers/usb/musb/musb_host.c +++ b/drivers/usb/musb/musb_host.c @@ -661,7 +661,7 @@ static int musb_tx_dma_set_mode_mentor(struct dma_controller *dma, csr &= ~(MUSB_TXCSR_AUTOSET | MUSB_TXCSR_DMAMODE); csr |= MUSB_TXCSR_DMAENAB; /* against programmer's guide */ } - channel->desired_mode = mode; + channel->desired_mode = *mode; musb_writew(epio, MUSB_TXCSR, csr); return 0; |