iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

watchdog: pic32-wdt: Use devm_clk_get_enabled() helper

Browse Source 
The devm_clk_get_enabled() helper:
   - calls devm_clk_get()
   - calls clk_prepare_enable() and registers what is needed in order to
     call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code and avoids the need of a dedicated function used
with devm_add_action_or_reset().

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/4335b4201b535ebc749a98bad0b99e3cb5317c39.1672496563.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
This commit is contained in:
Christophe JAILLET 2022-12-31 15:22:57 +01:00 committed by Wim Van Sebroeck
parent a8a9b98057
commit 7f7f8ad072
1 changed files with 1 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/watchdog/pic32-wdt.c
View File

@ -162,11 +162,6 @@ static const struct of_device_id pic32_wdt_dt_ids[] = {
};
MODULE_DEVICE_TABLE(of, pic32_wdt_dt_ids);
static void pic32_clk_disable_unprepare(void *data)
{
clk_disable_unprepare(data);
}
static int pic32_wdt_drv_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@ -186,22 +181,12 @@ static int pic32_wdt_drv_probe(struct platform_device *pdev)
if (!wdt->rst_base)
return -ENOMEM;
wdt->clk = devm_clk_get(dev, NULL);
wdt->clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(wdt->clk)) {
dev_err(dev, "clk not found\n");
return PTR_ERR(wdt->clk);
}
ret = clk_prepare_enable(wdt->clk);
if (ret) {
dev_err(dev, "clk enable failed\n");
return ret;
}
ret = devm_add_action_or_reset(dev, pic32_clk_disable_unprepare,
wdt->clk);
if (ret)
return ret;
if (pic32_wdt_is_win_enabled(wdt)) {
dev_err(dev, "windowed-clear mode is not supported.\n");
return -ENODEV;