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From 2e2f57e09e1ace18ae01a87d9fc4378c96c54370 Mon Sep 17 00:00:00 2001
From: Lukas Wunner <lukas@wunner.de>
Date: Tue, 22 Jan 2019 12:29:45 +0100
Subject: [PATCH 385/806] bcm2835-mmc: Handle mmc_add_host() errors

The BCM2835 MMC host driver calls mmc_add_host() but doesn't check its
return value.  Errors occurring in that function are therefore not
handled.  Fix it.

Signed-off-by: Lukas Wunner <lukas@wunner.de>
Cc: Frank Pavlic <f.pavlic@kunbus.de>
---
 drivers/mmc/host/bcm2835-mmc.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

--- a/drivers/mmc/host/bcm2835-mmc.c
+++ b/drivers/mmc/host/bcm2835-mmc.c
@@ -1398,10 +1398,16 @@ static int bcm2835_mmc_add_host(struct b
 	}
 
 	mmiowb();
-	mmc_add_host(mmc);
+	ret = mmc_add_host(mmc);
+	if (ret) {
+		dev_err(dev, "could not add MMC host\n");
+		goto free_irq;
+	}
 
 	return 0;
 
+free_irq:
+	free_irq(host->irq, host);
 untasklet:
 	tasklet_kill(&host->finish_tasklet);