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net: rfkill: gpio: spinlock-safe GPIO access 

This sets the direction of the gpio once when it's requested,
and uses the spinlock-safe gpio_set_state() to change the
state.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Heikki Krogerus 2013-10-16 13:53:41 +03:00 committed by Johannes Berg
parent f02ae59b12
commit 0be81727a4
1 changed files with 8 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
net/rfkill/rfkill-gpio.c
View File

@ -42,18 +42,18 @@ static int rfkill_gpio_set_power(void *data, bool blocked)
if (blocked) {
if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
gpio_direction_output(rfkill->pdata->shutdown_gpio, 0);
gpio_set_value(rfkill->pdata->shutdown_gpio, 0);
if (gpio_is_valid(rfkill->pdata->reset_gpio))
gpio_direction_output(rfkill->pdata->reset_gpio, 0);
gpio_set_value(rfkill->pdata->reset_gpio, 0);
if (!IS_ERR(rfkill->clk) && rfkill->clk_enabled)
clk_disable(rfkill->clk);
} else {
if (!IS_ERR(rfkill->clk) && !rfkill->clk_enabled)
clk_enable(rfkill->clk);
if (gpio_is_valid(rfkill->pdata->reset_gpio))
gpio_direction_output(rfkill->pdata->reset_gpio, 1);
gpio_set_value(rfkill->pdata->reset_gpio, 1);
if (gpio_is_valid(rfkill->pdata->shutdown_gpio))
gpio_direction_output(rfkill->pdata->shutdown_gpio, 1);
gpio_set_value(rfkill->pdata->shutdown_gpio, 1);
}
rfkill->clk_enabled = blocked;
@ -114,8 +114,8 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
rfkill->clk = devm_clk_get(&pdev->dev, pdata->power_clk_name);
if (gpio_is_valid(pdata->reset_gpio)) {
ret = devm_gpio_request(&pdev->dev, pdata->reset_gpio,
rfkill->reset_name);
ret = devm_gpio_request_one(&pdev->dev, pdata->reset_gpio,
0, rfkill->reset_name);
if (ret) {
pr_warn("%s: failed to get reset gpio.\n", __func__);
return ret;
@ -123,8 +123,8 @@ static int rfkill_gpio_probe(struct platform_device *pdev)
}
if (gpio_is_valid(pdata->shutdown_gpio)) {
ret = devm_gpio_request(&pdev->dev, pdata->shutdown_gpio,
rfkill->shutdown_name);
ret = devm_gpio_request_one(&pdev->dev, pdata->shutdown_gpio,
0, rfkill->shutdown_name);
if (ret) {
pr_warn("%s: failed to get shutdown gpio.\n", __func__);
return ret;