From 2bd44dadd5bfb4135162322fd0b45a174d4ad5bf Mon Sep 17 00:00:00 2001
From: Stefan Wahren <stefan.wahren@i2se.com>
Date: Sun, 23 Dec 2018 21:59:17 +0100
Subject: [PATCH] mmc: sdhci-iproc: handle mmc_of_parse() errors during probe
Git-commit: 2bd44dadd5bfb4135162322fd0b45a174d4ad5bf
Patch-mainline: v5.0-rc4
References: bsc#1051510

We need to handle mmc_of_parse() errors during probe.

This finally fixes the wifi regression on Raspberry Pi 3 series.
In error case the wifi chip was permanently in reset because of
the power sequence depending on the deferred probe of the GPIO expander.

Fixes: b580c52d58d9 ("mmc: sdhci-iproc: add IPROC SDHCI driver")
Cc: stable@vger.kernel.org
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/mmc/host/sdhci-iproc.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@@ -278,7 +278,10 @@ static int sdhci_iproc_probe(struct plat
 
 	iproc_host->data = iproc_data;
 
-	mmc_of_parse(host->mmc);
+	ret = mmc_of_parse(host->mmc);
+	if (ret)
+		goto err;
+
 	sdhci_get_of_property(pdev);
 
 	host->mmc->caps |= iproc_host->data->mmc_caps;