mmc: sdhci-imx-esdhc: use more devm_* functions

Use devm_kzalloc, devm_gpio_request_one and devm_request_irq to make
cleanup path simpler.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/host/sdhci-esdhc-imx.c b/drivers/mmc/host/sdhci-esdhc-imx.c
index effc2acfe77838427997078eacab1551af46c416..1849461c39ee62e3b12d444fe88ce8ea1b3e9ba7 100644 (file)
--- a/drivers/mmc/host/sdhci-esdhc-imx.c
+++ b/drivers/mmc/host/sdhci-esdhc-imx.c
@@ -456,10 +456,10 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
 
        pltfm_host = sdhci_priv(host);
 
-       imx_data = kzalloc(sizeof(struct pltfm_imx_data), GFP_KERNEL);
+       imx_data = devm_kzalloc(&pdev->dev, sizeof(*imx_data), GFP_KERNEL);
        if (!imx_data) {
                err = -ENOMEM;
-               goto err_imx_data;
+               goto free_sdhci;
        }
 
        if (of_id)
@@ -470,19 +470,19 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
        imx_data->clk_ipg = devm_clk_get(&pdev->dev, "ipg");
        if (IS_ERR(imx_data->clk_ipg)) {
                err = PTR_ERR(imx_data->clk_ipg);
-               goto err_clk_get;
+               goto free_sdhci;
        }
 
        imx_data->clk_ahb = devm_clk_get(&pdev->dev, "ahb");
        if (IS_ERR(imx_data->clk_ahb)) {
                err = PTR_ERR(imx_data->clk_ahb);
-               goto err_clk_get;
+               goto free_sdhci;
        }
 
        imx_data->clk_per = devm_clk_get(&pdev->dev, "per");
        if (IS_ERR(imx_data->clk_per)) {
                err = PTR_ERR(imx_data->clk_per);
-               goto err_clk_get;
+               goto free_sdhci;
        }
 
        pltfm_host->clk = imx_data->clk_per;
@@ -494,7 +494,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
        imx_data->pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
        if (IS_ERR(imx_data->pinctrl)) {
                err = PTR_ERR(imx_data->pinctrl);
-               goto pin_err;
+               goto disable_clk;
        }
 
        host->quirks |= SDHCI_QUIRK_BROKEN_TIMEOUT_VAL;
@@ -519,7 +519,7 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
                if (!host->mmc->parent->platform_data) {
                        dev_err(mmc_dev(host->mmc), "no board data!\n");
                        err = -EINVAL;
-                       goto no_board_data;
+                       goto disable_clk;
                }
                imx_data->boarddata = *((struct esdhc_platform_data *)
                                        host->mmc->parent->platform_data);
@@ -527,7 +527,8 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
 
        /* write_protect */
        if (boarddata->wp_type == ESDHC_WP_GPIO) {
-               err = gpio_request_one(boarddata->wp_gpio, GPIOF_IN, "ESDHC_WP");
+               err = devm_gpio_request_one(&pdev->dev, boarddata->wp_gpio,
+                                           GPIOF_IN, "ESDHC_WP");
                if (err) {
                        dev_warn(mmc_dev(host->mmc),
                                 "no write-protect pin available!\n");
@@ -543,19 +544,21 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
 
        switch (boarddata->cd_type) {
        case ESDHC_CD_GPIO:
-               err = gpio_request_one(boarddata->cd_gpio, GPIOF_IN, "ESDHC_CD");
+               err = devm_gpio_request_one(&pdev->dev, boarddata->cd_gpio,
+                                           GPIOF_IN, "ESDHC_CD");
                if (err) {
                        dev_err(mmc_dev(host->mmc),
                                "no card-detect pin available!\n");
-                       goto no_card_detect_pin;
+                       goto disable_clk;
                }
 
-               err = request_irq(gpio_to_irq(boarddata->cd_gpio), cd_irq,
+               err = devm_request_irq(&pdev->dev,
+                                gpio_to_irq(boarddata->cd_gpio), cd_irq,
                                 IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING,
                                 mmc_hostname(host->mmc), host);
                if (err) {
                        dev_err(mmc_dev(host->mmc), "request irq error\n");
-                       goto no_card_detect_irq;
+                       goto disable_clk;
                }
                /* fall through */
 
@@ -574,27 +577,15 @@ static int __devinit sdhci_esdhc_imx_probe(struct platform_device *pdev)
 
        err = sdhci_add_host(host);
        if (err)
-               goto err_add_host;
+               goto disable_clk;
 
        return 0;
 
-err_add_host:
-       if (gpio_is_valid(boarddata->cd_gpio))
-               free_irq(gpio_to_irq(boarddata->cd_gpio), host);
-no_card_detect_irq:
-       if (gpio_is_valid(boarddata->cd_gpio))
-               gpio_free(boarddata->cd_gpio);
-       if (gpio_is_valid(boarddata->wp_gpio))
-               gpio_free(boarddata->wp_gpio);
-no_card_detect_pin:
-no_board_data:
-pin_err:
+disable_clk:
        clk_disable_unprepare(imx_data->clk_per);
        clk_disable_unprepare(imx_data->clk_ipg);
        clk_disable_unprepare(imx_data->clk_ahb);
-err_clk_get:
-       kfree(imx_data);
-err_imx_data:
+free_sdhci:
        sdhci_pltfm_free(pdev);
        return err;
 }
@@ -604,25 +595,14 @@ static int __devexit sdhci_esdhc_imx_remove(struct platform_device *pdev)
        struct sdhci_host *host = platform_get_drvdata(pdev);
        struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host);
        struct pltfm_imx_data *imx_data = pltfm_host->priv;
-       struct esdhc_platform_data *boarddata = &imx_data->boarddata;
        int dead = (readl(host->ioaddr + SDHCI_INT_STATUS) == 0xffffffff);
 
        sdhci_remove_host(host, dead);
 
-       if (gpio_is_valid(boarddata->wp_gpio))
-               gpio_free(boarddata->wp_gpio);
-
-       if (gpio_is_valid(boarddata->cd_gpio)) {
-               free_irq(gpio_to_irq(boarddata->cd_gpio), host);
-               gpio_free(boarddata->cd_gpio);
-       }
-
        clk_disable_unprepare(imx_data->clk_per);
        clk_disable_unprepare(imx_data->clk_ipg);
        clk_disable_unprepare(imx_data->clk_ahb);
 
-       kfree(imx_data);
-
        sdhci_pltfm_free(pdev);
 
        return 0;