usb: gadget: udc: renesas_usb3: fix number of the pipes

commit a58204ab91ad8cae4d8474aa0ba5d1fc504860c9 upstream.

This controller on R-Car Gen3 has 6 pipes that included PIPE 0 for
control actually. But, the datasheet has error in writing as it has
31 pipes. (However, the previous code defined 30 pipes wrongly...)

Anyway, this patch fixes it.

Fixes: 746bfe63bba3 ("usb: gadget: renesas_usb3: add support for Renesas USB3.0 peripheral controller")
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c
index 63a2061..6b3e8ad 100644 (file)
--- a/drivers/usb/gadget/udc/renesas_usb3.c
+++ b/drivers/usb/gadget/udc/renesas_usb3.c
@@ -254,7 +254,7 @@
 #define USB3_EP0_SS_MAX_PACKET_SIZE    512
 #define USB3_EP0_HSFS_MAX_PACKET_SIZE  64
 #define USB3_EP0_BUF_SIZE              8
-#define USB3_MAX_NUM_PIPES             30
+#define USB3_MAX_NUM_PIPES             6       /* This includes PIPE 0 */
 #define USB3_WAIT_US                   3
 #define USB3_DMA_NUM_SETTING_AREA      4
 /*