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authorShawn Guo <shawn.guo@linaro.org>2015-02-25 22:53:32 +0800
committerStephen Boyd <sboyd@codeaurora.org>2015-03-11 16:00:20 -0700
commita51139fdbcecd208b96d1b8038b7a9eea9455acc (patch)
tree1d3466f1faa188266e1a84c6607a2969270ba557
parent3d3801effda19b21012b5d1981e96cc277df85fd (diff)
downloadlinux-linaro-stable-a51139fdbcecd208b96d1b8038b7a9eea9455acc.tar.gz
ARM: imx: fix struct clk pointer comparing
Since commit 035a61c314eb ("clk: Make clk API return per-user struct clk instances"), clk API users can no longer check if two struct clk pointers are pointing to the same hardware clock, i.e. struct clk_hw, by simply comparing two pointers. That's because with the per-user clk change, a brand new struct clk is created whenever clients try to look up the clock by calling clk_get() or sister functions like clk_get_sys() and of_clk_get(). This changes the original behavior where the struct clk is only created for once when clock driver registers the clock to CCF in the first place. The net change here is before commit 035a61c314eb the struct clk pointer is unique for given hardware clock, while after the commit the pointers returned by clk lookup calls become different for the same hardware clock. That said, the struct clk pointer comparing in the code doesn't work any more. Call helper function clk_is_match() instead to fix the problem. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Signed-off-by: Michael Turquette <mturquette@linaro.org> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
-rw-r--r--arch/arm/mach-imx/mach-imx6q.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 4ad6e473cf83..9de3412af406 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -211,8 +211,9 @@ static void __init imx6q_1588_init(void)
* set bit IOMUXC_GPR1[21]. Or the PTP clock must be from pad
* (external OSC), and we need to clear the bit.
*/
- clksel = ptp_clk == enet_ref ? IMX6Q_GPR1_ENET_CLK_SEL_ANATOP :
- IMX6Q_GPR1_ENET_CLK_SEL_PAD;
+ clksel = clk_is_match(ptp_clk, enet_ref) ?
+ IMX6Q_GPR1_ENET_CLK_SEL_ANATOP :
+ IMX6Q_GPR1_ENET_CLK_SEL_PAD;
gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr");
if (!IS_ERR(gpr))
regmap_update_bits(gpr, IOMUXC_GPR1,