On 03/23/2016 05:28 AM, Stephen Warren wrote:
smsc95xx_read_reg() should calculate sizeof(*data) not sizeof(data) since data is a pointer, and the value pointed at is being transferred over USB, not the value of the pointer. This fixes operation of the driver in 64-bit builds, such as the Raspberry Pi 3.
Thanks!
Acked-by: Marek Vasut marex@denx.de
Reported-by: Eric Anholt eric@anholt.net Signed-off-by: Stephen Warren swarren@wwwdotorg.org
drivers/usb/eth/smsc95xx.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/eth/smsc95xx.c b/drivers/usb/eth/smsc95xx.c index 3099bf4fd4e5..08eaed5c2e03 100644 --- a/drivers/usb/eth/smsc95xx.c +++ b/drivers/usb/eth/smsc95xx.c @@ -188,10 +188,10 @@ static int smsc95xx_read_reg(struct usb_device *udev, u32 index, u32 *data) len = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), USB_VENDOR_REQUEST_READ_REGISTER, USB_DIR_IN | USB_TYPE_VENDOR | USB_RECIP_DEVICE,
0, index, tmpbuf, sizeof(data),
0, index, tmpbuf, sizeof(*data), USB_CTRL_GET_TIMEOUT);
- if (len != sizeof(data)) {
- if (len != sizeof(*data)) { debug("smsc95xx_read_reg failed: index=%d, len=%d", index, len); return -EIO;