usb: musb: gadget: fix compile warning

Fix the following compile warning:

drivers/usb/musb/musb_gadget.c: In function ‘rxstate’:
drivers/usb/musb/musb_gadget.c:714:22: warning: comparison of distinct pointer types lacks a cast [enabled by default]

Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index b47f66d..d35a375 100644 (file)
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -627,7 +627,7 @@ static void rxstate(struct musb *musb, struct musb_request *req)
                                struct dma_controller   *c;
                                struct dma_channel      *channel;
                                int                     use_dma = 0;
-                               int transfer_size;
+                               unsigned int transfer_size;
 
                                c = musb->dma_controller;
                                channel = musb_ep->dma;
@@ -669,10 +669,11 @@ static void rxstate(struct musb *musb, struct musb_request *req)
                                                csr | MUSB_RXCSR_DMAMODE);
                                        musb_writew(epio, MUSB_RXCSR, csr);
 
-                                       transfer_size = min(request->length - request->actual,
+                                       transfer_size = min_t(unsigned int,
+                                                       request->length -
+                                                       request->actual,
                                                        channel->max_len);
                                        musb_ep->dma->desired_mode = 1;
-
                                } else {
                                        if (!musb_ep->hb_mult &&
                                                musb_ep->hw_ep->rx_double_buffered)
@@ -702,7 +703,7 @@ static void rxstate(struct musb *musb, struct musb_request *req)
 
                                struct dma_controller *c;
                                struct dma_channel *channel;
-                               int transfer_size = 0;
+                               unsigned int transfer_size = 0;
 
                                c = musb->dma_controller;
                                channel = musb_ep->dma;
@@ -711,11 +712,13 @@ static void rxstate(struct musb *musb, struct musb_request *req)
                                if (fifo_count < musb_ep->packet_sz)
                                        transfer_size = fifo_count;
                                else if (request->short_not_ok)
-                                       transfer_size = min(request->length -
+                                       transfer_size = min_t(unsigned int,
+                                                       request->length -
                                                        request->actual,
                                                        channel->max_len);
                                else
-                                       transfer_size = min(request->length -
+                                       transfer_size = min_t(unsigned int,
+                                                       request->length -
                                                        request->actual,
                                                        (unsigned)fifo_count);