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watchdog: davinci: Use devm_clk_get_enabled() helper 

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/6a4cf8e8b9d8f555c77395ba2ecadc205553774d.1672483046.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 11:37:39 +01:00 committed by Wim Van Sebroeck
parent 2cf46c636f
commit 0a03207205
1 changed files with 1 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
drivers/watchdog/davinci_wdt.c
View File

@ -189,14 +189,8 @@ static const struct watchdog_ops davinci_wdt_ops = {
.restart = davinci_wdt_restart,
};
static void davinci_clk_disable_unprepare(void *data)
{
clk_disable_unprepare(data);
}
static int davinci_wdt_probe(struct platform_device *pdev)
{
int ret = 0;
struct device *dev = &pdev->dev;
struct watchdog_device *wdd;
struct davinci_wdt_device *davinci_wdt;
@ -205,21 +199,11 @@ static int davinci_wdt_probe(struct platform_device *pdev)
if (!davinci_wdt)
return -ENOMEM;
davinci_wdt->clk = devm_clk_get(dev, NULL);
davinci_wdt->clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(davinci_wdt->clk))
return dev_err_probe(dev, PTR_ERR(davinci_wdt->clk),
"failed to get clock node\n");
ret = clk_prepare_enable(davinci_wdt->clk);
if (ret) {
dev_err(dev, "failed to prepare clock\n");
return ret;
}
ret = devm_add_action_or_reset(dev, davinci_clk_disable_unprepare,
davinci_wdt->clk);
if (ret)
return ret;
platform_set_drvdata(pdev, davinci_wdt);
wdd = &davinci_wdt->wdd;