firmware: meson_sm: stop using 0 as NULL pointer
Use NULL for NULL pointer to fix the following sparse warning: drivers/firmware/meson/meson_sm.c:85:24: sparse: warning: Using plain integer as NULL pointer Signed-off-by: Miles Chen <miles.chen@mediatek.com> Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org> Link: https://lore.kernel.org/r/20230110031242.4917-1-miles.chen@mediatek.com Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
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@ -82,7 +82,7 @@ static void __iomem *meson_sm_map_shmem(u32 cmd_shmem, unsigned int size)
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sm_phy_base = __meson_sm_call(cmd_shmem, 0, 0, 0, 0, 0);
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if (!sm_phy_base)
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return 0;
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return NULL;
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return ioremap_cache(sm_phy_base, size);
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}
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