diff options
| author | Jonas Gorski <jonas.gorski@gmail.com> | 2017-07-18 12:17:26 +0200 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2017-11-26 13:50:31 +0000 |
| commit | 285014c8e18f51bf89de3f39b08c95044edbe935 (patch) | |
| tree | 79d0346277efd82504287c3cbeb9149fc872889e /arch/mips | |
| parent | 7b7b5b48e5902f9e07d76d9607ddb9d0b15c8619 (diff) | |
MIPS: AR7: allow NULL clock for clk_get_rate
commit 585e0e9d02a690c29932b2fc0789835c7b91d448 upstream.
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>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/ar7/clock.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/mips/ar7/clock.c b/arch/mips/ar7/clock.c index 2460f9d23f1b..320e5b888ad3 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); |