target/linux/ar71xx/patches-4.4/200-MIPS-ath79-fix-ar933x-wmac-reset.patch

   1 --- a/arch/mips/ath79/dev-wmac.c
   2 +++ b/arch/mips/ath79/dev-wmac.c
   3 @@ -62,10 +62,26 @@ static void __init ar913x_wmac_setup(voi
   4
   5  static int ar933x_wmac_reset(void)
   6  {
   7 +       int retries = 20;
   8 +
   9         ath79_device_reset_set(AR933X_RESET_WMAC);
  10         ath79_device_reset_clear(AR933X_RESET_WMAC);
  11
  12 -       return 0;
  13 +       while (1) {
  14 +               u32 bootstrap;
  15 +
  16 +               bootstrap = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
  17 +               if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
  18 +                       return 0;
  19 +
  20 +               if (retries-- == 0)
  21 +                       break;
  22 +
  23 +               udelay(10000);
  24 +       }
  25 +
  26 +       pr_err("ar933x: WMAC reset timed out");
  27 +       return -ETIMEDOUT;
  28  }
  29
  30  static int ar933x_r1_get_wmac_revision(void)