[PATCH v2] Convert simple_strtoul to kstrtoul

[Navya Sri Nizamkari <navyasri.tech@gmail.com>]

This patch fixes the checkpatch.pl warning:
simple_strtoul is obsolete, use kstrtoul instead.

When the string is not converted(parsing error),the strings pointed to by ep and parport[n] are the same.This parsing error results in kstrtoul returning a non-zero value.

Signed-off-by: Navya Sri Nizamkari <navyasri.tech@gmail.com>
---
Changes in v2:
    -Added a descriptive commit message.

 drivers/staging/media/parport/bw-qcam.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/staging/media/parport/bw-qcam.c b/drivers/staging/media/parport/bw-qcam.c
index 67b9da1..1b81244 100644
--- a/drivers/staging/media/parport/bw-qcam.c
+++ b/drivers/staging/media/parport/bw-qcam.c
@@ -1106,10 +1106,8 @@ static int accept_bwqcam(struct parport *port)
 	if (parport[0] && strncmp(parport[0], "auto", 4) != 0) {
 		/* user gave parport parameters */
 		for (n = 0; n < MAX_CAMS && parport[n]; n++) {
-			char *ep;
 			unsigned long r;
-			r = simple_strtoul(parport[n], &ep, 0);
-			if (ep == parport[n]) {
+			if (kstrtoul(parport[n],0,&r)) {
 				printk(KERN_ERR
 					"bw-qcam: bad port specifier \"%s\"\n",
 					parport[n]);
-- 
1.9.1