usb: musb: ux500_dma: fix sparse warning

fix the following sparse warning:

drivers/usb/musb/ux500_dma.c:60:6: warning: symbol 'ux500_dma_callback' was not declared. Should it be static?

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

diff --git a/drivers/usb/musb/ux500_dma.c b/drivers/usb/musb/ux500_dma.c
index 2df9b7d..f417b7e 100644 (file)
--- a/drivers/usb/musb/ux500_dma.c
+++ b/drivers/usb/musb/ux500_dma.c
@@ -57,7 +57,7 @@ struct ux500_dma_controller {
 };
 
 /* Work function invoked from DMA callback to handle rx transfers. */
-void ux500_dma_callback(void *private_data)
+static void ux500_dma_callback(void *private_data)
 {
        struct dma_channel *channel = private_data;
        struct ux500_dma_channel *ux500_channel = channel->private_data;