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| author | Sanjeev Premi <premi@ti.com> | 2010-02-24 12:05:56 -0700 |
|---|---|---|
| committer | Paul Walmsley <paul@pwsan.com> | 2010-02-24 12:05:56 -0700 |
| commit | a51ba284076437ce36efc8dd9b15983546c043f7 (patch) | |
| tree | 9548b92b4255cd28e9c1c7bec2d8af95c440d9e0 | |
| parent | 3cc4a2fc2ed7727828f410ab092111cb56cefd61 (diff) | |
| download | linux-a51ba284076437ce36efc8dd9b15983546c043f7.tar.gz linux-a51ba284076437ce36efc8dd9b15983546c043f7.tar.bz2 linux-a51ba284076437ce36efc8dd9b15983546c043f7.zip | |
OMAP3 clock: Check return values for clk_get()
This patch checks if clk_get() returned success for
the clocks used in function omap2_clk_arch_init().
This version incorporates review comments from
Kevin Hilman and Paul Walmsley.
Signed-off-by: Sanjeev Premi <premi@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
| -rw-r--r-- | arch/arm/mach-omap2/clock34xx.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c index 0e4fdba7f20b..de7391b6bcfd 100644 --- a/arch/arm/mach-omap2/clock34xx.c +++ b/arch/arm/mach-omap2/clock34xx.c @@ -21,6 +21,7 @@ #include <linux/delay.h> #include <linux/clk.h> #include <linux/io.h> +#include <linux/err.h> #include <plat/cpu.h> #include <plat/clock.h> @@ -286,6 +287,7 @@ static int __init omap3xxx_clk_arch_init(void) { struct clk *osc_sys_ck, *dpll1_ck, *arm_fck, *core_ck; unsigned long osc_sys_rate; + bool err = 0; if (!cpu_is_omap34xx()) return 0; @@ -295,9 +297,23 @@ static int __init omap3xxx_clk_arch_init(void) /* XXX test these for success */ dpll1_ck = clk_get(NULL, "dpll1_ck"); + if (WARN(IS_ERR(dpll1_ck), "Failed to get dpll1_ck.\n")) + err = 1; + arm_fck = clk_get(NULL, "arm_fck"); + if (WARN(IS_ERR(arm_fck), "Failed to get arm_fck.\n")) + err = 1; + core_ck = clk_get(NULL, "core_ck"); + if (WARN(IS_ERR(core_ck), "Failed to get core_ck.\n")) + err = 1; + osc_sys_ck = clk_get(NULL, "osc_sys_ck"); + if (WARN(IS_ERR(osc_sys_ck), "Failed to get osc_sys_ck.\n")) + err = 1; + + if (err) + return -ENOENT; /* REVISIT: not yet ready for 343x */ if (clk_set_rate(dpll1_ck, mpurate)) |