From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Now that the DMA engine check was moved to musb_tx_dma_porgram(), both
musb_tx_dma_set_mode_cppi_tusb() and musb_tx_dma_set_mode_mentor() always
return 0, so we can make both these functions *void*.
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Bin Liu <b-liu@xxxxxx>
---
drivers/usb/musb/musb_host.c | 31 ++++++++++++-------------------
1 file changed, 12 insertions(+), 19 deletions(-)
diff --git a/drivers/usb/musb/musb_host.c b/drivers/usb/musb/musb_host.c
index 5f74d31..7c586f0 100644
--- a/drivers/usb/musb/musb_host.c
+++ b/drivers/usb/musb/musb_host.c
@@ -633,7 +633,7 @@ musb_rx_reinit(struct musb *musb, struct musb_qh *qh, u8 epnum)
ep->rx_reinit = 0;
}
-static int musb_tx_dma_set_mode_mentor(struct dma_controller *dma,
+static void musb_tx_dma_set_mode_mentor(struct dma_controller *dma,
struct musb_hw_ep *hw_ep, struct musb_qh *qh,
struct urb *urb, u32 offset,
u32 *length, u8 *mode)
@@ -670,17 +670,15 @@ static int musb_tx_dma_set_mode_mentor(struct dma_controller *dma,
}
channel->desired_mode = *mode;
musb_writew(epio, MUSB_TXCSR, csr);
-
- return 0;
}
-static int musb_tx_dma_set_mode_cppi_tusb(struct dma_controller *dma,
- struct musb_hw_ep *hw_ep,
- struct musb_qh *qh,
- struct urb *urb,
- u32 offset,
- u32 *length,
- u8 *mode)
+static void musb_tx_dma_set_mode_cppi_tusb(struct dma_controller *dma,
+ struct musb_hw_ep *hw_ep,
+ struct musb_qh *qh,
+ struct urb *urb,
+ u32 offset,
+ u32 *length,
+ u8 *mode)
{
struct dma_channel *channel = hw_ep->tx_channel;
@@ -691,8 +689,6 @@ static int musb_tx_dma_set_mode_cppi_tusb(struct dma_controller *dma,
* to identify the zero-length-final-packet case.
*/
*mode = (urb->transfer_flags & URB_ZERO_PACKET) ? 1 : 0;
-
- return 0;
}
static bool musb_tx_dma_program(struct dma_controller *dma,
@@ -702,18 +698,15 @@ static bool musb_tx_dma_program(struct dma_controller *dma,
struct dma_channel *channel = hw_ep->tx_channel;
u16 pkt_size = qh->maxpacket;
u8 mode;
- int res;
if (musb_dma_inventra(hw_ep->musb) || musb_dma_ux500(hw_ep->musb))
- res = musb_tx_dma_set_mode_mentor(dma, hw_ep, qh, urb,
- offset, &length, &mode);
+ musb_tx_dma_set_mode_mentor(dma, hw_ep, qh, urb, offset,
+ &length, &mode);
else if (is_cppi_enabled(hw_ep->musb) || tusb_dma_omap(hw_ep->musb))
- res = musb_tx_dma_set_mode_cppi_tusb(dma, hw_ep, qh, urb,
- offset, &length, &mode);
+ musb_tx_dma_set_mode_cppi_tusb(dma, hw_ep, qh, urb, offset,
+ &length, &mode);
else
return false;
- if (res)
- return false;
qh->segsize = length;
--
1.9.1
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
