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, the error handling paths and avoid the need of
a dedicated function used with devm_add_action_or_reset().
That said, mpfs_rtc_init_clk() is the same as devm_clk_get_enabled(), so
use this function directly instead.
This also fixes an (unlikely) unchecked devm_add_action_or_reset() error.
Based on my test with allyesconfig, this reduces the .o size from:
text data bss dec hex filename
5330 2208 0 7538 1d72 drivers/rtc/rtc-mpfs.o
down to:
5074 2208 0 7282 1c72 drivers/rtc/rtc-mpfs.o
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/e55c959f2821a2c367a4c5de529a638b1cc6b8cd.1661329086.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
return 0;
}
-static inline struct clk *mpfs_rtc_init_clk(struct device *dev)
-{
- struct clk *clk;
- int ret;
-
- clk = devm_clk_get(dev, "rtc");
- if (IS_ERR(clk))
- return clk;
-
- ret = clk_prepare_enable(clk);
- if (ret)
- return ERR_PTR(ret);
-
- devm_add_action_or_reset(dev, (void (*) (void *))clk_disable_unprepare, clk);
- return clk;
-}
-
static irqreturn_t mpfs_rtc_wakeup_irq_handler(int irq, void *dev)
{
struct mpfs_rtc_dev *rtcdev = dev;
/* range is capped by alarm max, lower reg is 31:0 & upper is 10:0 */
rtcdev->rtc->range_max = GENMASK_ULL(42, 0);
- clk = mpfs_rtc_init_clk(&pdev->dev);
+ clk = devm_clk_get_enabled(&pdev->dev, "rtc");
if (IS_ERR(clk))
return PTR_ERR(clk);