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path: root/drivers/media/dvb/dvb-usb/au6610.c
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Diffstat (limited to 'drivers/media/dvb/dvb-usb/au6610.c')
-rw-r--r--drivers/media/dvb/dvb-usb/au6610.c22
1 files changed, 16 insertions, 6 deletions
diff --git a/drivers/media/dvb/dvb-usb/au6610.c b/drivers/media/dvb/dvb-usb/au6610.c
index eb34cc3894e..2351077ff2b 100644
--- a/drivers/media/dvb/dvb-usb/au6610.c
+++ b/drivers/media/dvb/dvb-usb/au6610.c
@@ -33,8 +33,16 @@ static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
{
int ret;
u16 index;
- u8 usb_buf[6]; /* enough for all known requests,
- read returns 5 and write 6 bytes */
+ u8 *usb_buf;
+
+ /*
+ * allocate enough for all known requests,
+ * read returns 5 and write 6 bytes
+ */
+ usb_buf = kmalloc(6, GFP_KERNEL);
+ if (!usb_buf)
+ return -ENOMEM;
+
switch (wlen) {
case 1:
index = wbuf[0] << 8;
@@ -45,14 +53,15 @@ static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
break;
default:
warn("wlen = %x, aborting.", wlen);
- return -EINVAL;
+ ret = -EINVAL;
+ goto error;
}
ret = usb_control_msg(d->udev, usb_rcvctrlpipe(d->udev, 0), operation,
USB_TYPE_VENDOR|USB_DIR_IN, addr << 1, index,
- usb_buf, sizeof(usb_buf), AU6610_USB_TIMEOUT);
+ usb_buf, 6, AU6610_USB_TIMEOUT);
if (ret < 0)
- return ret;
+ goto error;
switch (operation) {
case AU6610_REQ_I2C_READ:
@@ -60,7 +69,8 @@ static int au6610_usb_msg(struct dvb_usb_device *d, u8 operation, u8 addr,
/* requested value is always 5th byte in buffer */
rbuf[0] = usb_buf[4];
}
-
+error:
+ kfree(usb_buf);
return ret;
}