usb: gadget: s3c-hsotg: fix can_write limit for non-periodic endpoints

Value of can_write variable in s3c_hsotg_write_fifo function should be limited
to 512 only for non-periodic endpoints. There was some discrepancy between
comment and code, becouse comment suggests correct behavior, but in the code
limit was applied to periodic endpoints too. So there is additional check
causing the limitation concerns only non-periodic endpoints.

Signed-off-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index a9cae1ff044955f8a2a2da86a5009a484a0a40d5..9875d9c0823f7c554744a40acb0a70897dde0bc6 100644 (file)
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -552,7 +552,7 @@ static int s3c_hsotg_write_fifo(struct s3c_hsotg *hsotg,
         * FIFO, requests of >512 cause the endpoint to get stuck with a
         * fragment of the end of the transfer in it.
         */
-       if (can_write > 512)
+       if (can_write > 512 && !periodic)
                can_write = 512;
 
        /*