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usb: musb: host: make musb_tx_dma_set_mode_*() *void*

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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@cogentembedded.com>
[b-liu@ti.com: revise subject prefix]
Signed-off-by: Bin Liu <b-liu@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sergei Shtylyov 2016-05-31 10:05:06 -05:00 committed by Greg Kroah-Hartman
parent 858b9be7fd
commit b6a6631dc3
1 changed files with 12 additions and 19 deletions
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31
drivers/usb/musb/musb_host.c
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@ -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;