++
On 12/31/22 13:57, Christophe JAILLET wrote:
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@xxxxxxxxxx>
---
V2: remove xwdt_clk_disable_unprepare() as-well
Note that the order of operations is slightly modified by this patch. The
clk is now prepare_enable()'ed before calling clk_get_rate().
---
drivers/watchdog/of_xilinx_wdt.c | 16 +---------------
1 file changed, 1 insertion(+), 15 deletions(-)
diff --git a/drivers/watchdog/of_xilinx_wdt.c b/drivers/watchdog/of_xilinx_wdt.c
index 3318544366b8..2a079ca04aa3 100644
--- a/drivers/watchdog/of_xilinx_wdt.c
+++ b/drivers/watchdog/of_xilinx_wdt.c
@@ -154,11 +154,6 @@ static u32 xwdt_selftest(struct xwdt_device *xdev)
return XWT_TIMER_FAILED;
}
-static void xwdt_clk_disable_unprepare(void *data)
-{
- clk_disable_unprepare(data);
-}
-
static int xwdt_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -193,7 +188,7 @@ static int xwdt_probe(struct platform_device *pdev)
watchdog_set_nowayout(xilinx_wdt_wdd, enable_once);
- xdev->clk = devm_clk_get(dev, NULL);
+ xdev->clk = devm_clk_get_enabled(dev, NULL);
if (IS_ERR(xdev->clk)) {
if (PTR_ERR(xdev->clk) != -ENOENT)
return PTR_ERR(xdev->clk);
@@ -211,15 +206,6 @@ static int xwdt_probe(struct platform_device *pdev)
"The watchdog clock freq cannot be obtained\n");
} else {
pfreq = clk_get_rate(xdev->clk);
- rc = clk_prepare_enable(xdev->clk);
- if (rc) {
- dev_err(dev, "unable to enable clock\n");
- return rc;
- }
- rc = devm_add_action_or_reset(dev, xwdt_clk_disable_unprepare,
- xdev->clk);
- if (rc)
- return rc;
}
/*
--
2.34.1
Srinivas: Please retest but it looks good to me.
Acked-by: Michal Simek <michal.simek@xxxxxxx>
Thanks,
Michal
