From patchwork Tue Jul 18 10:17:29 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [8/9] MIPS: ralink: allow NULL clock for clk_get_rate X-Patchwork-Submitter: Jonas Gorski X-Patchwork-Id: 16778 Message-Id: <20170718101730.2541-9-jonas.gorski@gmail.com> To: unlisted-recipients:; (no To-header on input) Cc: John Crispin , Ralf Baechle , linux-mips@linux-mips.org, linux-kernel@vger.kernel.org Date: Tue, 18 Jul 2017 12:17:29 +0200 From: Jonas Gorski List-Id: linux-mips 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: 3f0a06b0368d ("MIPS: ralink: adds clkdev code") Cc: John Crispin Cc: Ralf Baechle Cc: linux-mips@linux-mips.org Cc: linux-kernel@vger.kernel.org Reported-by: Mathias Kresin Signed-off-by: Jonas Gorski --- arch/mips/ralink/clk.c | 3 +++ 1 file changed, 3 insertions(+) --- a/arch/mips/ralink/clk.c +++ b/arch/mips/ralink/clk.c @@ -52,6 +52,9 @@ EXPORT_SYMBOL_GPL(clk_disable); unsigned long clk_get_rate(struct clk *clk) { + if (!clk) + return 0; + return clk->rate; } EXPORT_SYMBOL_GPL(clk_get_rate);