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Date: Mon, 22 Sep 2014 17:59:24 +0530
From: Pramod Gurav <pramod.gurav@...rtplayin.com>
To: linux-kernel@...r.kernel.org
Cc: Pramod Gurav <pramod.gurav@...rtplayin.com>,
Balaji T K <balajitk@...com>, Chris Ball <chris@...ntf.net>,
Ulf Hansson <ulf.hansson@...aro.org>, linux-mmc@...r.kernel.org
Subject: [PATCH] mmc: omap_hsmmc: Switch to using managed version to gpio request
This change switches to managed version of gpio_request to simplify
module unloading and failure cases and does away with code to release
gpio resources.
Cc: Balaji T K <balajitk@...com>
Cc: Chris Ball <chris@...ntf.net>
Cc: Ulf Hansson <ulf.hansson@...aro.org>
Cc: linux-mmc@...r.kernel.org
Signed-off-by: Pramod Gurav <pramod.gurav@...rtplayin.com>
---
drivers/mmc/host/omap_hsmmc.c | 38 +++++++++++---------------------------
1 file changed, 11 insertions(+), 27 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 9656726..761d408 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -449,7 +449,8 @@ static inline int omap_hsmmc_have_reg(void)
#endif
-static int omap_hsmmc_gpio_init(struct omap_mmc_platform_data *pdata)
+static int omap_hsmmc_gpio_init(struct platform_device *pdev,
+ struct omap_mmc_platform_data *pdata)
{
int ret;
@@ -461,43 +462,29 @@ static int omap_hsmmc_gpio_init(struct omap_mmc_platform_data *pdata)
pdata->slots[0].card_detect = omap_hsmmc_card_detect;
pdata->slots[0].card_detect_irq =
gpio_to_irq(pdata->slots[0].switch_pin);
- ret = gpio_request(pdata->slots[0].switch_pin, "mmc_cd");
+ ret = devm_gpio_request(&pdev->dev, pdata->slots[0].switch_pin,
+ "mmc_cd");
if (ret)
return ret;
ret = gpio_direction_input(pdata->slots[0].switch_pin);
if (ret)
- goto err_free_sp;
+ return ret;
} else
pdata->slots[0].switch_pin = -EINVAL;
if (gpio_is_valid(pdata->slots[0].gpio_wp)) {
pdata->slots[0].get_ro = omap_hsmmc_get_wp;
- ret = gpio_request(pdata->slots[0].gpio_wp, "mmc_wp");
+ ret = devm_gpio_request(&pdev->dev, pdata->slots[0].gpio_wp,
+ "mmc_wp");
if (ret)
- goto err_free_cd;
+ return ret;
ret = gpio_direction_input(pdata->slots[0].gpio_wp);
if (ret)
- goto err_free_wp;
+ return ret;
} else
pdata->slots[0].gpio_wp = -EINVAL;
return 0;
-
-err_free_wp:
- gpio_free(pdata->slots[0].gpio_wp);
-err_free_cd:
- if (gpio_is_valid(pdata->slots[0].switch_pin))
-err_free_sp:
- gpio_free(pdata->slots[0].switch_pin);
- return ret;
-}
-
-static void omap_hsmmc_gpio_free(struct omap_mmc_platform_data *pdata)
-{
- if (gpio_is_valid(pdata->slots[0].gpio_wp))
- gpio_free(pdata->slots[0].gpio_wp);
- if (gpio_is_valid(pdata->slots[0].switch_pin))
- gpio_free(pdata->slots[0].switch_pin);
}
/*
@@ -2052,14 +2039,14 @@ static int omap_hsmmc_probe(struct platform_device *pdev)
if (IS_ERR(base))
return PTR_ERR(base);
- ret = omap_hsmmc_gpio_init(pdata);
+ ret = omap_hsmmc_gpio_init(pdev, pdata);
if (ret)
goto err;
mmc = mmc_alloc_host(sizeof(struct omap_hsmmc_host), &pdev->dev);
if (!mmc) {
ret = -ENOMEM;
- goto err_alloc;
+ goto err;
}
host = mmc_priv(mmc);
@@ -2282,8 +2269,6 @@ err_irq:
clk_disable_unprepare(host->dbclk);
err1:
mmc_free_host(mmc);
-err_alloc:
- omap_hsmmc_gpio_free(pdata);
err:
return ret;
}
@@ -2309,7 +2294,6 @@ static int omap_hsmmc_remove(struct platform_device *pdev)
if (host->dbclk)
clk_disable_unprepare(host->dbclk);
- omap_hsmmc_gpio_free(host->pdata);
mmc_free_host(host->mmc);
return 0;
--
1.7.9.5
--
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