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path: root/target/linux/ar71xx/patches-4.4/200-MIPS-ath79-fix-ar933x-wmac-reset.patch
blob: 1a6b2209d84e8b820635cba5e1b97843809b5eff (plain)
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--- a/arch/mips/ath79/dev-wmac.c
+++ b/arch/mips/ath79/dev-wmac.c
@@ -61,10 +61,27 @@ static void __init ar913x_wmac_setup(voi
 
 static int ar933x_wmac_reset(void)
 {
+	int retries = 20;
+
 	ath79_device_reset_set(AR933X_RESET_WMAC);
 	ath79_device_reset_clear(AR933X_RESET_WMAC);
 
-	return 0;
+	while (1) {
+		u32 bootstrap;
+
+		bootstrap = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
+		if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
+			return 0;
+
+		if (retries-- == 0)
+			break;
+
+		udelay(10000);
+	}
+
+	pr_err("ar933x: WMAC reset timed out");
+	return -ETIMEDOUT;
 }
 
 static int ar933x_r1_get_wmac_revision(void)