[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
===================================================================
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 @@
}
}
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 @@
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 @@
}
}
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 @@
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;
}