[PATCH] vfree and kfree cleanup in drivers/

This patch does a full cleanup of 'NULL checks before vfree', and a partial
cleanup of calls to kfree for all of drivers/ - the kfree bit is partial in
that I only did the files that also had vfree calls in them.  The patch
also gets rid of some redundant (void *) casts of pointers being passed to
[vk]free, and a some tiny whitespace corrections also crept in.

Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

6 files changed, 29 insertions, 55 deletions

diff --git a/drivers/media/common/saa7146_core.c b/drivers/media/common/saa7146_core.c
index cd5828b..206cc2f 100644
--- a/drivers/media/common/saa7146_core.c
+++ b/drivers/media/common/saa7146_core.c
@@ -168,10 +168,8 @@ void saa7146_pgtable_free(struct pci_dev *pci, struct saa7146_pgtable *pt)
 		return;
 	pci_free_consistent(pci, pt->size, pt->cpu, pt->dma);
 	pt->cpu = NULL;
-	if (NULL != pt->slist) {
-		kfree(pt->slist);
-		pt->slist = NULL;
-	}
+	kfree(pt->slist);
+	pt->slist = NULL;
 }
 
 int saa7146_pgtable_alloc(struct pci_dev *pci, struct saa7146_pgtable *pt)
diff --git a/drivers/media/video/cpia_usb.c b/drivers/media/video/cpia_usb.c
index cdda423..9774e94 100644
--- a/drivers/media/video/cpia_usb.c
+++ b/drivers/media/video/cpia_usb.c
@@ -445,10 +445,8 @@ static void cpia_usb_free_resources(struct usb_cpia *ucpia, int try)
 		ucpia->sbuf[1].urb = NULL;
 	}
 
-	if (ucpia->sbuf[1].data) {
-		kfree(ucpia->sbuf[1].data);
-		ucpia->sbuf[1].data = NULL;
-	}
+	kfree(ucpia->sbuf[1].data);
+	ucpia->sbuf[1].data = NULL;
  
 	if (ucpia->sbuf[0].urb) {
 		usb_kill_urb(ucpia->sbuf[0].urb);
@@ -456,10 +454,8 @@ static void cpia_usb_free_resources(struct usb_cpia *ucpia, int try)
 		ucpia->sbuf[0].urb = NULL;
 	}
 
-	if (ucpia->sbuf[0].data) {
-		kfree(ucpia->sbuf[0].data);
-		ucpia->sbuf[0].data = NULL;
-	}
+	kfree(ucpia->sbuf[0].data);
+	ucpia->sbuf[0].data = NULL;
 }
 
 static int cpia_usb_close(void *privdata)
@@ -623,20 +619,14 @@ static void cpia_disconnect(struct usb_interface *intf)
 
 	ucpia->curbuff = ucpia->workbuff = NULL;
 
-	if (ucpia->buffers[2]) {
-		vfree(ucpia->buffers[2]);
-		ucpia->buffers[2] = NULL;
-	}
+	vfree(ucpia->buffers[2]);
+	ucpia->buffers[2] = NULL;
 
-	if (ucpia->buffers[1]) {
-		vfree(ucpia->buffers[1]);
-		ucpia->buffers[1] = NULL;
-	}
+	vfree(ucpia->buffers[1]);
+	ucpia->buffers[1] = NULL;
 
-	if (ucpia->buffers[0]) {
-		vfree(ucpia->buffers[0]);
-		ucpia->buffers[0] = NULL;
-	}
+	vfree(ucpia->buffers[0]);
+	ucpia->buffers[0] = NULL;
 
 	cam->lowlevel_data = NULL;
 	kfree(ucpia);
diff --git a/drivers/media/video/stradis.c b/drivers/media/video/stradis.c
index b577435..d4497db 100644
--- a/drivers/media/video/stradis.c
+++ b/drivers/media/video/stradis.c
@@ -2184,30 +2184,18 @@ static void release_saa(void)
 		vfree(saa->vidbuf);
 		vfree(saa->audbuf);
 		vfree(saa->osdbuf);
-		if (saa->dmavid2)
-			kfree((void *) saa->dmavid2);
+		kfree(saa->dmavid2);
 		saa->audbuf = saa->vidbuf = saa->osdbuf = NULL;
 		saa->dmavid2 = NULL;
-		if (saa->dmadebi)
-			kfree((void *) saa->dmadebi);
-		if (saa->dmavid1)
-			kfree((void *) saa->dmavid1);
-		if (saa->dmavid2)
-			kfree((void *) saa->dmavid2);
-		if (saa->dmavid3)
-			kfree((void *) saa->dmavid3);
-		if (saa->dmaa1in)
-			kfree((void *) saa->dmaa1in);
-		if (saa->dmaa1out)
-			kfree((void *) saa->dmaa1out);
-		if (saa->dmaa2in)
-			kfree((void *) saa->dmaa2in);
-		if (saa->dmaa2out)
-			kfree((void *) saa->dmaa2out);
-		if (saa->dmaRPS1)
-			kfree((void *) saa->dmaRPS1);
-		if (saa->dmaRPS2)
-			kfree((void *) saa->dmaRPS2);
+		kfree(saa->dmadebi);
+		kfree(saa->dmavid1);
+		kfree(saa->dmavid3);
+		kfree(saa->dmaa1in);
+		kfree(saa->dmaa1out);
+		kfree(saa->dmaa2in);
+		kfree(saa->dmaa2out);
+		kfree(saa->dmaRPS1);
+		kfree(saa->dmaRPS2);
 		free_irq(saa->irq, saa);
 		if (saa->saa7146_mem)
 			iounmap(saa->saa7146_mem);
diff --git a/drivers/media/video/video-buf.c b/drivers/media/video/video-buf.c
index 97354f2..574b8e3 100644
--- a/drivers/media/video/video-buf.c
+++ b/drivers/media/video/video-buf.c
@@ -267,10 +267,10 @@ int videobuf_dma_free(struct videobuf_dmabuf *dma)
 		kfree(dma->pages);
 		dma->pages = NULL;
 	}
-	if (dma->vmalloc) {
-		vfree(dma->vmalloc);
-		dma->vmalloc = NULL;
-	}
+
+	vfree(dma->vmalloc);
+	dma->vmalloc = NULL;
+
 	if (dma->bus_addr) {
 		dma->bus_addr = 0;
 	}
diff --git a/drivers/media/video/zoran_driver.c b/drivers/media/video/zoran_driver.c
index ba838a4..53adeb7 100644
--- a/drivers/media/video/zoran_driver.c
+++ b/drivers/media/video/zoran_driver.c
@@ -650,7 +650,7 @@ jpg_fbuffer_free (struct file *file)
 				     off += PAGE_SIZE)
 					ClearPageReserved(MAP_NR
 							  (mem + off));
-				kfree((void *) mem);
+				kfree(mem);
 				fh->jpg_buffers.buffer[i].frag_tab[0] = 0;
 				fh->jpg_buffers.buffer[i].frag_tab[1] = 0;
 			}
diff --git a/drivers/media/video/zr36120.c b/drivers/media/video/zr36120.c
index c335331..0728681 100644
--- a/drivers/media/video/zr36120.c
+++ b/drivers/media/video/zr36120.c
@@ -820,11 +820,9 @@ void zoran_close(struct video_device* dev)
         msleep(100);			/* Wait 1/10th of a second */
 
 	/* free the allocated framebuffer */
-	if (ztv->fbuffer)
-		bfree( ztv->fbuffer, ZORAN_MAX_FBUFSIZE );
+	bfree(ztv->fbuffer, ZORAN_MAX_FBUFSIZE);
 	ztv->fbuffer = 0;
-	if (ztv->overinfo.overlay)
-		kfree( ztv->overinfo.overlay );
+	kfree(ztv->overinfo.overlay);
 	ztv->overinfo.overlay = 0;
 
 }