[PATCH] USB: kfree cleanup for drivers/usb/* - no need to check for NULL

Get rid of a bunch of redundant NULL pointer checks in drivers/usb/*,
there's no need to check a pointer for NULL before calling kfree() on it.

Signed-off-by: Jesper Juhl <juhl-lkml@dif.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>


Index: gregkh-2.6/drivers/usb/class/audio.c
===================================================================

2 files changed, 18 insertions, 34 deletions

diff --git a/drivers/usb/class/audio.c b/drivers/usb/class/audio.c
index f432b7d..f8f2156 100644
--- a/drivers/usb/class/audio.c
+++ b/drivers/usb/class/audio.c
@@ -649,14 +649,10 @@ static void usbin_stop(struct usb_audiodev *as)
 		}
 	}
 	set_current_state(TASK_RUNNING);
-	if (u->durb[0].urb->transfer_buffer)
-		kfree(u->durb[0].urb->transfer_buffer);
-	if (u->durb[1].urb->transfer_buffer)
-		kfree(u->durb[1].urb->transfer_buffer);
-	if (u->surb[0].urb->transfer_buffer)
-		kfree(u->surb[0].urb->transfer_buffer);
-	if (u->surb[1].urb->transfer_buffer)
-		kfree(u->surb[1].urb->transfer_buffer);
+	kfree(u->durb[0].urb->transfer_buffer);
+	kfree(u->durb[1].urb->transfer_buffer);
+	kfree(u->surb[0].urb->transfer_buffer);
+	kfree(u->surb[1].urb->transfer_buffer);
 	u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer = 
 		u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
 }
@@ -1009,21 +1005,17 @@ static int usbin_start(struct usb_audiodev *as)
 		u->phase = 0;
 		maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
 		bufsz = DESCFRAMES * maxsze;
-		if (u->durb[0].urb->transfer_buffer)
-			kfree(u->durb[0].urb->transfer_buffer);
+		kfree(u->durb[0].urb->transfer_buffer);
 		u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
 		u->durb[0].urb->transfer_buffer_length = bufsz;
-		if (u->durb[1].urb->transfer_buffer)
-			kfree(u->durb[1].urb->transfer_buffer);
+		kfree(u->durb[1].urb->transfer_buffer);
 		u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
 		u->durb[1].urb->transfer_buffer_length = bufsz;
 		if (u->syncpipe) {
-			if (u->surb[0].urb->transfer_buffer)
-				kfree(u->surb[0].urb->transfer_buffer);
+			kfree(u->surb[0].urb->transfer_buffer);
 			u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
 			u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
-			if (u->surb[1].urb->transfer_buffer)
-				kfree(u->surb[1].urb->transfer_buffer);
+			kfree(u->surb[1].urb->transfer_buffer);
 			u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
 			u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
 		}
@@ -1128,14 +1120,10 @@ static void usbout_stop(struct usb_audiodev *as)
 		}
 	}
 	set_current_state(TASK_RUNNING);
-	if (u->durb[0].urb->transfer_buffer)
-		kfree(u->durb[0].urb->transfer_buffer);
-	if (u->durb[1].urb->transfer_buffer)
-		kfree(u->durb[1].urb->transfer_buffer);
-	if (u->surb[0].urb->transfer_buffer)
-		kfree(u->surb[0].urb->transfer_buffer);
-	if (u->surb[1].urb->transfer_buffer)
-		kfree(u->surb[1].urb->transfer_buffer);
+	kfree(u->durb[0].urb->transfer_buffer);
+	kfree(u->durb[1].urb->transfer_buffer);
+	kfree(u->surb[0].urb->transfer_buffer);
+	kfree(u->surb[1].urb->transfer_buffer);
 	u->durb[0].urb->transfer_buffer = u->durb[1].urb->transfer_buffer = 
 		u->surb[0].urb->transfer_buffer = u->surb[1].urb->transfer_buffer = NULL;
 }
@@ -1376,21 +1364,17 @@ static int usbout_start(struct usb_audiodev *as)
 		u->phase = 0;
 		maxsze = (u->freqmax + 0x3fff) >> (14 - AFMT_BYTESSHIFT(u->format));
 		bufsz = DESCFRAMES * maxsze;
-		if (u->durb[0].urb->transfer_buffer)
-			kfree(u->durb[0].urb->transfer_buffer);
+		kfree(u->durb[0].urb->transfer_buffer);
 		u->durb[0].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
 		u->durb[0].urb->transfer_buffer_length = bufsz;
-		if (u->durb[1].urb->transfer_buffer)
-			kfree(u->durb[1].urb->transfer_buffer);
+		kfree(u->durb[1].urb->transfer_buffer);
 		u->durb[1].urb->transfer_buffer = kmalloc(bufsz, GFP_KERNEL);
 		u->durb[1].urb->transfer_buffer_length = bufsz;
 		if (u->syncpipe) {
-			if (u->surb[0].urb->transfer_buffer)
-				kfree(u->surb[0].urb->transfer_buffer);
+			kfree(u->surb[0].urb->transfer_buffer);
 			u->surb[0].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
 			u->surb[0].urb->transfer_buffer_length = 3*SYNCFRAMES;
-			if (u->surb[1].urb->transfer_buffer)
-				kfree(u->surb[1].urb->transfer_buffer);
+			kfree(u->surb[1].urb->transfer_buffer);
 			u->surb[1].urb->transfer_buffer = kmalloc(3*SYNCFRAMES, GFP_KERNEL);
 			u->surb[1].urb->transfer_buffer_length = 3*SYNCFRAMES;
 		}
diff --git a/drivers/usb/class/bluetty.c b/drivers/usb/class/bluetty.c
index 6bac65e..5240233 100644
--- a/drivers/usb/class/bluetty.c
+++ b/drivers/usb/class/bluetty.c
@@ -309,7 +309,7 @@ static int bluetooth_ctrl_msg (struct usb_bluetooth *bluetooth, int request, int
 		}
 	}
 	if (urb->transfer_buffer_length < len) {
-		kfree (urb->transfer_buffer);
+		kfree(urb->transfer_buffer);
 		urb->transfer_buffer = kmalloc (len, GFP_KERNEL);
 		if (urb->transfer_buffer == NULL) {
 			err ("%s - out of memory", __FUNCTION__);
@@ -535,7 +535,7 @@ static int bluetooth_write (struct tty_struct * tty, const unsigned char *buf, i
 	}
 
 exit:
-	kfree (temp_buffer);
+	kfree(temp_buffer);
 
 	return retval;
 }