mmc: sdhci-pltfm: check return value of platform_get_irq()
The function platform_get_irq() can fail; it returns a negative error code on failure. A negative IRQ number will make sdhci_add_host() fail to request IRQ anyway, but it makes sense to let it fail earlier here. Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com> Acked-by: NAdrian Hunter <adrian.hunter@intel.com> Signed-off-by: NUlf Hansson <ulf.hansson@linaro.org>
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