提交 fd51c697 编写于 作者: A Amit Choudhary 提交者: Mauro Carvalho Chehab

V4L/DVB (5490): Drivers/media/video/se401.c: check kmalloc() return value.

Check the return value of kmalloc() in function se401_start_stream(), in
file drivers/media/video/se401.c.
Signed-off-by: NAmit Choudhary <amit2030@gmail.com>
Signed-off-by: NMauro Carvalho Chehab <mchehab@infradead.org>
上级 20ec811e
......@@ -450,6 +450,13 @@ static int se401_start_stream(struct usb_se401 *se401)
}
for (i=0; i<SE401_NUMSBUF; i++) {
se401->sbuf[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
if (!se401->sbuf[i].data) {
for(i = i - 1; i >= 0; i--) {
kfree(se401->sbuf[i].data);
se401->sbuf[i].data = NULL;
}
return -ENOMEM;
}
}
se401->bayeroffset=0;
......@@ -458,13 +465,26 @@ static int se401_start_stream(struct usb_se401 *se401)
se401->scratch_overflow=0;
for (i=0; i<SE401_NUMSCRATCH; i++) {
se401->scratch[i].data=kmalloc(SE401_PACKETSIZE, GFP_KERNEL);
if (!se401->scratch[i].data) {
for(i = i - 1; i >= 0; i--) {
kfree(se401->scratch[i].data);
se401->scratch[i].data = NULL;
}
goto nomem_sbuf;
}
se401->scratch[i].state=BUFFER_UNUSED;
}
for (i=0; i<SE401_NUMSBUF; i++) {
urb=usb_alloc_urb(0, GFP_KERNEL);
if(!urb)
return -ENOMEM;
if(!urb) {
for(i = i - 1; i >= 0; i--) {
usb_kill_urb(se401->urb[i]);
usb_free_urb(se401->urb[i]);
se401->urb[i] = NULL;
}
goto nomem_scratch;
}
usb_fill_bulk_urb(urb, se401->dev,
usb_rcvbulkpipe(se401->dev, SE401_VIDEO_ENDPOINT),
......@@ -482,6 +502,18 @@ static int se401_start_stream(struct usb_se401 *se401)
se401->framecount=0;
return 0;
nomem_scratch:
for (i=0; i<SE401_NUMSCRATCH; i++) {
kfree(se401->scratch[i].data);
se401->scratch[i].data = NULL;
}
nomem_sbuf:
for (i=0; i<SE401_NUMSBUF; i++) {
kfree(se401->sbuf[i].data);
se401->sbuf[i].data = NULL;
}
return -ENOMEM;
}
static int se401_stop_stream(struct usb_se401 *se401)
......
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