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

Browse source 
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>
This commit is contained in:
Shawn Guo 2012-11-26 14:39:43 +08:00 committed by Chris Ball
parent 8ed765aac3
commit e3af31c6c6
1 changed files with 18 additions and 38 deletions
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56
drivers/mmc/host/sdhci-esdhc-imx.c
View file

@ -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;