[PATCH] ASoC: fix rockchip 64-bit build warning

From: Arnd Bergmann
Date: Fri Nov 13 2015 - 12:16:55 EST

The rk_spdif_probe uses the device match data as a token to identify a
particular device, but accidentally casts a pointer to 'int', which is
not portable, as gcc points out in this warning on arm64:

rockchip_spdif.c: In function 'rk_spdif_probe':
rockchip_spdif.c:283:6: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]

This changes the logic to compare two pointer values instead, using
the same cast that was used for initializing the value in the first

Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>

diff --git a/sound/soc/rockchip/rockchip_spdif.c b/sound/soc/rockchip/rockchip_spdif.c
index a38a3029062c..ac72ff5055bb 100644
--- a/sound/soc/rockchip/rockchip_spdif.c
+++ b/sound/soc/rockchip/rockchip_spdif.c
@@ -280,7 +280,7 @@ static int rk_spdif_probe(struct platform_device *pdev)
int ret;

match = of_match_node(rk_spdif_match, np);
- if ((int) match->data == RK_SPDIF_RK3288) {
+ if (match->data == (void *)RK_SPDIF_RK3288) {
struct regmap *grf;

grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");

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