The problem is that if "ret" is negative then when we check if
"ret > len", that condition is going to be true because of type
promotion. So this patch re-orders the code to check for negatives
first and preserve those error codes.
Fixes:
f384b352cbf0 ("mtd: spi-nor: parse Serial Flash Discoverable Parameters (SFDP) tables")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
while (len) {
ret = spi_nor_read_data(nor, addr, len, buf);
- if (!ret || ret > len)
- return -EIO;
if (ret < 0)
return ret;
+ if (!ret || ret > len)
+ return -EIO;
buf += ret;
addr += ret;