V4L/DVB (13003): Correct dangerous and inefficient msecs_to_jiffies() calculation in some V4L2 drivers

Signed-off-by: Andreas Mohr <andi@lisas.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/et61x251/et61x251_core.c

@@ -1379,8 +1379,10 @@ et61x251_read(struct file* filp, char __user * buf,
 			    (!list_empty(&cam->outqueue)) ||
 			    (cam->state & DEV_DISCONNECTED) ||
 			    (cam->state & DEV_MISCONFIGURED),
-			    cam->module_param.frame_timeout *
-			    1000 * msecs_to_jiffies(1) );
+			    msecs_to_jiffies(
+				cam->module_param.frame_timeout * 1000
+			    )
+			  );
 		if (timeout < 0) {
 			mutex_unlock(&cam->fileop_mutex);
 			return timeout;

drivers/media/video/sn9c102/sn9c102_core.c

@@ -1954,8 +1954,10 @@ sn9c102_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
 				    (!list_empty(&cam->outqueue)) ||
 				    (cam->state & DEV_DISCONNECTED) ||
 				    (cam->state & DEV_MISCONFIGURED),
-				    cam->module_param.frame_timeout *
-				    1000 * msecs_to_jiffies(1) );
+				    msecs_to_jiffies(
+					cam->module_param.frame_timeout * 1000
+				    )
+				  );
 			if (timeout < 0) {
 				mutex_unlock(&cam->fileop_mutex);
 				return timeout;

drivers/media/video/zc0301/zc0301_core.c

@@ -819,8 +819,10 @@ zc0301_read(struct file* filp, char __user * buf, size_t count, loff_t* f_pos)
 			    (!list_empty(&cam->outqueue)) ||
 			    (cam->state & DEV_DISCONNECTED) ||
 			    (cam->state & DEV_MISCONFIGURED),
-			    cam->module_param.frame_timeout *
-			    1000 * msecs_to_jiffies(1) );
+			    msecs_to_jiffies(
+				cam->module_param.frame_timeout * 1000
+			    )
+			  );
 		if (timeout < 0) {
 			mutex_unlock(&cam->fileop_mutex);
 			return timeout;