mmc: sdhci: Check that ops are defined

The check is necessary to avoid NULL pointer dereference.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
Reviewed-by: Michal Simek <michal.simek@xilinx.com>

diff --git a/drivers/mmc/sdhci.c b/drivers/mmc/sdhci.c
index 8971a1122c932dd6011cd9fc75463e610452d4d4..400f87e134dc26a52554c71a77c5619531167004 100644 (file)
--- a/drivers/mmc/sdhci.c
+++ b/drivers/mmc/sdhci.c
@@ -314,7 +314,7 @@ static int sdhci_execute_tuning(struct udevice *dev, uint opcode)
 
        debug("%s\n", __func__);
 
-       if (host->ops->platform_execute_tuning) {
+       if (host->ops && host->ops->platform_execute_tuning) {
                err = host->ops->platform_execute_tuning(mmc, opcode);
                if (err)
                        return err;
@@ -347,7 +347,7 @@ static int sdhci_set_clock(struct mmc *mmc, unsigned int clock)
        if (clock == 0)
                return 0;
 
-       if (host->ops->set_delay)
+       if (host->ops && host->ops->set_delay)
                host->ops->set_delay(host);
 
        if (SDHCI_GET_VERSION(host) >= SDHCI_SPEC_300) {