[PATCH 13/13] drivers/rtc/rtc-coh901331.c: use clk_prepare_enable and clk_disable_unprepare

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



From: Julia Lawall <Julia.Lawall@xxxxxxx>

Clk_prepare_enable and clk_disable_unprepare combine clk_prepare and
clk_enable, and clk_disable and clk_unprepare.  They make the code more
concise, and ensure that clk_unprepare is called when clk_enable fails.

A simplified version of the semantic patch that introduces calls to these
functions is as follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
expression e;
@@

- clk_prepare(e);
- clk_enable(e);
+ clk_prepare_enable(e);

@@
expression e;
@@

- clk_disable(e);
- clk_unprepare(e);
+ clk_disable_unprepare(e);
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@xxxxxxx>

---
I'm not sure about this.  Maybe it would be better to leave the disable and
unprepare separated, since there is no matching nearby clk_prepare.

 drivers/rtc/rtc-coh901331.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/rtc/rtc-coh901331.c b/drivers/rtc/rtc-coh901331.c
index 76b2156..c8115b8 100644
--- a/drivers/rtc/rtc-coh901331.c
+++ b/drivers/rtc/rtc-coh901331.c
@@ -276,8 +276,7 @@ static void coh901331_shutdown(struct platform_device *pdev)
 
 	clk_enable(rtap->clk);
 	writel(0, rtap->virtbase + COH901331_IRQ_MASK);
-	clk_disable(rtap->clk);
-	clk_unprepare(rtap->clk);
+	clk_disable_unprepare(rtap->clk);
 }
 
 static struct platform_driver coh901331_driver = {

--
To unsubscribe from this list: send the line "unsubscribe kernel-janitors" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Kernel Development]     [Kernel Announce]     [Kernel Newbies]     [Linux Networking Development]     [Share Photos]     [IDE]     [Security]     [Git]     [Netfilter]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Device Mapper]

  Powered by Linux