[PATCH v1 1/3] f_rockusb: Use NULL instead of 0 for pointers

[Andy Shevchenko]

get_rkusb() mistakenly uses integers without cast.
Convert them to proper type.

Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
---
 drivers/usb/gadget/f_rockusb.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/gadget/f_rockusb.c b/drivers/usb/gadget/f_rockusb.c
index 9ae02ae78c1e..9dd10f9e9aa1 100644
--- a/drivers/usb/gadget/f_rockusb.c
+++ b/drivers/usb/gadget/f_rockusb.c
@@ -110,7 +110,7 @@ struct f_rockusb *get_rkusb(void)
 	if (!f_rkusb) {
 		f_rkusb = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*f_rkusb));
 		if (!f_rkusb)
-			return 0;
+			return NULL;
 
 		rockusb_func = f_rkusb;
 		memset(f_rkusb, 0, sizeof(*f_rkusb));
@@ -120,7 +120,7 @@ struct f_rockusb *get_rkusb(void)
 		f_rkusb->buf_head = memalign(CONFIG_SYS_CACHELINE_SIZE,
 					     RKUSB_BUF_SIZE);
 		if (!f_rkusb->buf_head)
-			return 0;
+			return NULL;
 
 		f_rkusb->buf = f_rkusb->buf_head;
 		memset(f_rkusb->buf_head, 0, RKUSB_BUF_SIZE);
-- 
2.29.2