[U-Boot] [PATCH] mmc: msm_sdhci: Set mmc->dev pointer in msm_sdc_probe()

Mateusz Kulikowski mateusz.kulikowski at gmail.com
Sun Jun 26 22:43:55 CEST 2016


MMC core expects (now) valid mmc->dev pointer.
During conversion in commit cffe5d86 not every driver was updated.

This patch fixes crash while accessing MMC on
boards using Qualcomm SDHCI controller.

Signed-off-by: Mateusz Kulikowski <mateusz.kulikowski at gmail.com>
---
This patch fixes MMC support on dragonboard.

Without it attempts to access MMC caused null-pointer derefernece.


 drivers/mmc/msm_sdhci.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/mmc/msm_sdhci.c b/drivers/mmc/msm_sdhci.c
index 64bbf0c..96dcdbe 100644
--- a/drivers/mmc/msm_sdhci.c
+++ b/drivers/mmc/msm_sdhci.c
@@ -136,7 +136,12 @@ static int msm_sdc_probe(struct udevice *dev)
 	host->version = sdhci_readw(host, SDHCI_HOST_VERSION);
 
 	/* automatically detect max and min speed */
-	return add_sdhci(host, 0, 0);
+	ret =  add_sdhci(host, 0, 0);
+	if (ret)
+		return ret;
+	host->mmc->dev = dev;
+
+	return 0;
 }
 
 static int msm_sdc_remove(struct udevice *dev)
-- 
2.7.4



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