target/linux/ar71xx/patches-4.4/460-m25p80-spi-read-flash-check.patch

   1 --- a/drivers/mtd/devices/m25p80.c
   2 +++ b/drivers/mtd/devices/m25p80.c
   3 @@ -149,8 +149,10 @@ static int m25p80_read(struct spi_nor *n
   4                 msg.data_nbits = m25p80_rx_nbits(nor);
   5
   6                 ret = spi_flash_read(spi, &msg);
   7 -               *retlen = msg.retlen;
   8 -               return ret;
   9 +               if (!ret) {
  10 +                       *retlen = msg.retlen;
  11 +                       return 0;
  12 +               }
  13         }
  14
  15         spi_message_init(&m);