MIPS: BCM63xx: 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.

Signed-off-by: Masahiro Yamada <[email protected]>
Acked-by: Florian Fainelli <[email protected]>
Cc: Stephen Boyd <[email protected]>
Cc: Michael Turquette <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Patchwork: https://patchwork.linux-mips.org/patch/14264/
Signed-off-by: Ralf Baechle <[email protected]>

diff --git a/arch/mips/bcm63xx/clk.c b/arch/mips/bcm63xx/clk.c
index 637565284732d396354b5a1eb056bb74e2703380..b49fc9cb9cad2de2c3768ba93e54da41177ff0a7 100644 (file)
--- a/arch/mips/bcm63xx/clk.c
+++ b/arch/mips/bcm63xx/clk.c
@@ -326,6 +326,9 @@ EXPORT_SYMBOL(clk_enable);
 
 void clk_disable(struct clk *clk)
 {
+       if (!clk)
+               return;
+
        mutex_lock(&clocks_mutex);
        clk_disable_unlocked(clk);
        mutex_unlock(&clocks_mutex);