[PATCH 3/9] blackfin: bf609: allow NULL clock for clk_get_rate

[Jonas Gorski]

Make the behaviour of clk_get_rate consistent with common clk's
clk_get_rate by accepting NULL clocks as parameter. Some device
drivers rely on this, and will cause an OOPS otherwise.

Fixes: 969003152aa9 ("blackfin: bf60x: add clock support")
Cc: Steven Miao <realmz6@xxxxxxxxx>
Cc: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: adi-buildroot-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: linux-kernel@xxxxxxxxxxxxxxx
Reported-by: Mathias Kresin <dev@xxxxxxxxx>
Signed-off-by: Jonas Gorski <jonas.gorski@xxxxxxxxx>
---
 arch/blackfin/mach-bf609/clock.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/blackfin/mach-bf609/clock.c b/arch/blackfin/mach-bf609/clock.c
index 392a59b9a504..21a0ec18829f 100644
--- a/arch/blackfin/mach-bf609/clock.c
+++ b/arch/blackfin/mach-bf609/clock.c
@@ -109,7 +109,7 @@ EXPORT_SYMBOL(clk_disable);
 unsigned long clk_get_rate(struct clk *clk)
 {
 	unsigned long ret = 0;
-	if (clk->ops && clk->ops->get_rate)
+	if (clk && clk->ops && clk->ops->get_rate)
 		ret = clk->ops->get_rate(clk);
 	return ret;
 }
-- 
2.11.0