[PATCH 1/2] mmc: sdhci-iproc: handle mmc_of_parse() errors during probe

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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@xxxxxxxxxxxxxxx
Signed-off-by: Stefan Wahren <stefan.wahren@xxxxxxxx>
---
 drivers/mmc/host/sdhci-iproc.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/host/sdhci-iproc.c b/drivers/mmc/host/sdhci-iproc.c
index 0db9905..9d12c06 100644
--- a/drivers/mmc/host/sdhci-iproc.c
+++ b/drivers/mmc/host/sdhci-iproc.c
@@ -296,7 +296,10 @@ static int sdhci_iproc_probe(struct platform_device *pdev)
 
 	iproc_host->data = iproc_data;
 
-	mmc_of_parse(host->mmc);
+	ret = mmc_of_parse(host->mmc);
+	if (ret)
+		goto err;
+
 	sdhci_get_property(pdev);
 
 	host->mmc->caps |= iproc_host->data->mmc_caps;
-- 
2.7.4




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