| Message ID | 03e3125996244a85493652e8675dbb1b66e8ead4.1457271549.git.mchehab@osg.samsung.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
diff --git a/drivers/media/usb/gspca/touptek.c b/drivers/media/usb/gspca/touptek.c index 7bac6bc96063..8063b8e45ee5 100644 --- a/drivers/media/usb/gspca/touptek.c +++ b/drivers/media/usb/gspca/touptek.c @@ -211,7 +211,7 @@ static int val_reply(struct gspca_dev *gspca_dev, const char *reply, int rc) static void reg_w(struct gspca_dev *gspca_dev, u16 value, u16 index) { - char buff[1]; + char *buff = gspca_dev->usb_buf; int rc; PDEBUG(D_USBO, @@ -438,7 +438,7 @@ static void configure_encrypted(struct gspca_dev *gspca_dev) static int configure(struct gspca_dev *gspca_dev) { int rc; - uint8_t buff[4]; + char *buff = gspca_dev->usb_buf; PDEBUG(D_STREAM, "configure()\n");
As warned by smatch: drivers/media/usb/gspca/touptek.c:220 reg_w() error: doing dma on the stack (buff) drivers/media/usb/gspca/touptek.c:458 configure() error: doing dma on the stack (buff) This can fail, as the stack may not be in a memory that would allod DMA. So, use the usb_buf instead. Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> --- drivers/media/usb/gspca/touptek.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)