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authorMasahiro Yamada <yamada.masahiro@socionext.com>2017-05-04 00:51:35 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-04 01:52:07 +0300
commitaccce8e7e8b769ec2430bc0f4a8a2b23c68c1837 (patch)
tree533773e21a90290778002c621fc6459cdc5b7403
parent672934d2470133b94df26dd3e4e3f26fbd74ff11 (diff)
downloadlinux-accce8e7e8b769ec2430bc0f4a8a2b23c68c1837.tar.xz
blackfin: bf609: let clk_disable() return immediately if clk is NULL
In many of clk_disable() implementations, it is a no-op for a NULL pointer input, but this is one of the exceptions. Making it treewide consistent will allow clock consumers to call clk_disable() without NULL pointer check. Link: http://lkml.kernel.org/r/1490692624-11931-4-git-send-email-yamada.masahiro@socionext.com Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Cc: Stephen Boyd <sboyd@codeaurora.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Michael Turquette <mturquette@baylibre.com> Cc: Steven Miao <realmz6@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--arch/blackfin/mach-bf609/clock.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/blackfin/mach-bf609/clock.c b/arch/blackfin/mach-bf609/clock.c
index 378305844b2c..392a59b9a504 100644
--- a/arch/blackfin/mach-bf609/clock.c
+++ b/arch/blackfin/mach-bf609/clock.c
@@ -97,6 +97,9 @@ EXPORT_SYMBOL(clk_enable);
void clk_disable(struct clk *clk)
{
+ if (!clk)
+ return;
+
if (clk->ops && clk->ops->disable)
clk->ops->disable(clk);
}