mmc: sdhci-spear: Fix NULL pointer dereference
pdata could be NULL if cd_gpio = -1. Dereference pdata only if it is not NULL. Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org> Acked-by: NViresh Kumar <viresh.kumar@linaro.org> Signed-off-by: NChris Ball <chris@printf.net>
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