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authorChristophe JAILLET <christophe.jaillet@wanadoo.fr>2022-12-31 09:12:28 +0100
committerWim Van Sebroeck <wim@linux-watchdog.org>2023-02-12 15:32:49 +0100
commit616a2fe3cda63d4e6eb3a29f925f14b3766c633e (patch)
tree6d62d3fb5f9a699cf7d640d770b3954dd6d8620b /drivers/watchdog/cadence_wdt.c
parentc4b8e92bc1a8d860ca53a41c25cd84fa03efaf50 (diff)
watchdog: cadence: 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/615c6c3c46c3ee8e3136725af0ab0b51e1298091.1672474336.git.christophe.jaillet@wanadoo.fr Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
Diffstat (limited to 'drivers/watchdog/cadence_wdt.c')
-rw-r--r--drivers/watchdog/cadence_wdt.c17
1 files changed, 1 insertions, 16 deletions
diff --git a/drivers/watchdog/cadence_wdt.c b/drivers/watchdog/cadence_wdt.c
index bc99e9164930..23d41043863f 100644
--- a/drivers/watchdog/cadence_wdt.c
+++ b/drivers/watchdog/cadence_wdt.c
@@ -274,11 +274,6 @@ static const struct watchdog_ops cdns_wdt_ops = {
.set_timeout = cdns_wdt_settimeout,
};
-static void cdns_clk_disable_unprepare(void *data)
-{
- clk_disable_unprepare(data);
-}
-
/************************Platform Operations*****************************/
/**
* cdns_wdt_probe - Probe call for the device.
@@ -333,21 +328,11 @@ static int cdns_wdt_probe(struct platform_device *pdev)
watchdog_stop_on_reboot(cdns_wdt_device);
watchdog_set_drvdata(cdns_wdt_device, wdt);
- wdt->clk = devm_clk_get(dev, NULL);
+ wdt->clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(wdt->clk))
return dev_err_probe(dev, PTR_ERR(wdt->clk),
"input clock not found\n");
- ret = clk_prepare_enable(wdt->clk);
- if (ret) {
- dev_err(dev, "unable to enable clock\n");
- return ret;
- }
- ret = devm_add_action_or_reset(dev, cdns_clk_disable_unprepare,
- wdt->clk);
- if (ret)
- return ret;
-
clock_f = clk_get_rate(wdt->clk);
if (clock_f <= CDNS_WDT_CLK_75MHZ) {
wdt->prescaler = CDNS_WDT_PRESCALE_512;