mmc: sdhci-st: use sdhci_pltfm_init for private allocation

Commit 0e748234293f ("mmc: sdhci: Add size for caller in init+register")
allows users of sdhci_pltfm to allocate private space in calls to
sdhci_pltfm_init+sdhci_pltfm_register. This patch migrates sdhci-st
to this allocation.

Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/host/sdhci-st.c b/drivers/mmc/host/sdhci-st.c
index 969c2b0..320e1c2 100644 (file)
--- a/drivers/mmc/host/sdhci-st.c
+++ b/drivers/mmc/host/sdhci-st.c
@@ -251,7 +251,7 @@ static int sdhci_st_set_dll_for_clock(struct sdhci_host *host)
 {
        int ret = 0;
        struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-       struct st_mmc_platform_data *pdata = pltfm_host->priv;
+       struct st_mmc_platform_data *pdata = sdhci_pltfm_priv(pltfm_host);
 
        if (host->clock > CLK_TO_CHECK_DLL_LOCK) {
                st_mmcss_set_dll(pdata->top_ioaddr);
@@ -265,7 +265,7 @@ static void sdhci_st_set_uhs_signaling(struct sdhci_host *host,
                                        unsigned int uhs)
 {
        struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-       struct st_mmc_platform_data *pdata = pltfm_host->priv;
+       struct st_mmc_platform_data *pdata = sdhci_pltfm_priv(pltfm_host);
        u16 ctrl_2 = sdhci_readw(host, SDHCI_HOST_CONTROL2);
        int ret = 0;
 
@@ -357,10 +357,7 @@ static int sdhci_st_probe(struct platform_device *pdev)
        int ret = 0;
        u16 host_version;
        struct resource *res;
-
-       pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
-       if (!pdata)
-               return -ENOMEM;
+       struct reset_control *rstc;
 
        clk =  devm_clk_get(&pdev->dev, "mmc");
        if (IS_ERR(clk)) {
@@ -368,19 +365,23 @@ static int sdhci_st_probe(struct platform_device *pdev)
                return PTR_ERR(clk);
        }
 
-       pdata->rstc = devm_reset_control_get(&pdev->dev, NULL);
-       if (IS_ERR(pdata->rstc))
-               pdata->rstc = NULL;
+       rstc = devm_reset_control_get(&pdev->dev, NULL);
+       if (IS_ERR(rstc))
+               rstc = NULL;
        else
-               reset_control_deassert(pdata->rstc);
+               reset_control_deassert(rstc);
 
-       host = sdhci_pltfm_init(pdev, &sdhci_st_pdata, 0);
+       host = sdhci_pltfm_init(pdev, &sdhci_st_pdata, sizeof(*pdata));
        if (IS_ERR(host)) {
                dev_err(&pdev->dev, "Failed sdhci_pltfm_init\n");
                ret = PTR_ERR(host);
                goto err_pltfm_init;
        }
 
+       pltfm_host = sdhci_priv(host);
+       pdata = sdhci_pltfm_priv(pltfm_host);
+       pdata->rstc = rstc;
+
        ret = mmc_of_parse(host->mmc);
        if (ret) {
                dev_err(&pdev->dev, "Failed mmc_of_parse\n");
@@ -398,8 +399,6 @@ static int sdhci_st_probe(struct platform_device *pdev)
                pdata->top_ioaddr = NULL;
        }
 
-       pltfm_host = sdhci_priv(host);
-       pltfm_host->priv = pdata;
        pltfm_host->clk = clk;
 
        /* Configure the Arasan HC inside the flashSS */
@@ -427,8 +426,8 @@ err_out:
 err_of:
        sdhci_pltfm_free(pdev);
 err_pltfm_init:
-       if (pdata->rstc)
-               reset_control_assert(pdata->rstc);
+       if (rstc)
+               reset_control_assert(rstc);
 
        return ret;
 }
@@ -437,13 +436,14 @@ static int sdhci_st_remove(struct platform_device *pdev)
 {
        struct sdhci_host *host = platform_get_drvdata(pdev);
        struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-       struct st_mmc_platform_data *pdata = pltfm_host->priv;
+       struct st_mmc_platform_data *pdata = sdhci_pltfm_priv(pltfm_host);
+       struct reset_control *rstc = pdata->rstc;
        int ret;
 
        ret = sdhci_pltfm_unregister(pdev);
 
-       if (pdata->rstc)
-               reset_control_assert(pdata->rstc);
+       if (rstc)
+               reset_control_assert(rstc);
 
        return ret;
 }
@@ -453,7 +453,7 @@ static int sdhci_st_suspend(struct device *dev)
 {
        struct sdhci_host *host = dev_get_drvdata(dev);
        struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-       struct st_mmc_platform_data *pdata = pltfm_host->priv;
+       struct st_mmc_platform_data *pdata = sdhci_pltfm_priv(pltfm_host);
        int ret = sdhci_suspend_host(host);
 
        if (ret)
@@ -471,7 +471,7 @@ static int sdhci_st_resume(struct device *dev)
 {
        struct sdhci_host *host = dev_get_drvdata(dev);
        struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
-       struct st_mmc_platform_data *pdata = pltfm_host->priv;
+       struct st_mmc_platform_data *pdata = sdhci_pltfm_priv(pltfm_host);
        struct device_node *np = dev->of_node;
 
        clk_prepare_enable(pltfm_host->clk);