mmc: sh_mobile_sdhi: add new macro for mmc_host to sh_mobile_sdhi

getting struct sh_mobile_sdhi from struct mmc_host needs to use
complex container_of(). This patch adds new host_to_priv macro to
get it easily.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sh_mobile_sdhi.c b/drivers/mmc/host/sh_mobile_sdhi.c
index 26eeeb6..bcdadb9 100644 (file)
--- a/drivers/mmc/host/sh_mobile_sdhi.c
+++ b/drivers/mmc/host/sh_mobile_sdhi.c
@@ -35,6 +35,8 @@
 
 #define EXT_ACC           0xe4
 
+#define host_to_priv(host) container_of((host)->pdata, struct sh_mobile_sdhi, mmc_data)
+
 struct sh_mobile_sdhi_of_data {
        unsigned long tmio_flags;
        unsigned long capabilities;
@@ -88,7 +90,7 @@ static int sh_mobile_sdhi_clk_enable(struct platform_device *pdev, unsigned int
 {
        struct mmc_host *mmc = platform_get_drvdata(pdev);
        struct tmio_mmc_host *host = mmc_priv(mmc);
-       struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
+       struct sh_mobile_sdhi *priv = host_to_priv(host);
        int ret = clk_prepare_enable(priv->clk);
        if (ret < 0)
                return ret;
@@ -101,7 +103,7 @@ static void sh_mobile_sdhi_clk_disable(struct platform_device *pdev)
 {
        struct mmc_host *mmc = platform_get_drvdata(pdev);
        struct tmio_mmc_host *host = mmc_priv(mmc);
-       struct sh_mobile_sdhi *priv = container_of(host->pdata, struct sh_mobile_sdhi, mmc_data);
+       struct sh_mobile_sdhi *priv = host_to_priv(host);
        clk_disable_unprepare(priv->clk);
 }