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authorJonas Gorski <jonas.gorski@gmail.com>2017-07-18 12:17:26 +0200
committerRalf Baechle <ralf@linux-mips.org>2017-09-06 12:35:21 +0200
commit585e0e9d02a690c29932b2fc0789835c7b91d448 (patch)
tree8f378cdc069bb5e8ee6296c6af5ddc6aa5feb5c8 /arch/mips
parenteebc6056d3d8af0f163a077621f79e459c656fa2 (diff)
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MIPS: AR7: allow NULL clock for clk_get_rate
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: 780019ddf02f ("MIPS: AR7: Implement clock API") Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com> Reported-by: Mathias Kresin <dev@kresin.me> Cc: Paul Gortmaker <paul.gortmaker@windriver.com> Cc: James Hogan <james.hogan@imgtec.com> Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Patchwork: https://patchwork.linux-mips.org/patch/16775/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/ar7/clock.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/ar7/clock.c b/arch/mips/ar7/clock.c
index dda422a0f36c..0137656107a9 100644
--- a/arch/mips/ar7/clock.c
+++ b/arch/mips/ar7/clock.c
@@ -430,6 +430,9 @@ EXPORT_SYMBOL(clk_disable);
unsigned long clk_get_rate(struct clk *clk)
{
+ if (!clk)
+ return 0;
+
return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);