This patch adds a additional check in s3c_set_clksrc function to ensure that the clksrc_clk does have a choice of multiple clock sources. In addition to this, a check is added to ensure that a parent is assigned to the clksrc_clk in case it does not have a choice of parent clocks.
Signed-off-by: Thomas Abraham <[email protected]> --- arch/arm/plat-samsung/clock-clksrc.c | 13 +++++++++---- 1 files changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/arm/plat-samsung/clock-clksrc.c b/arch/arm/plat-samsung/clock-clksrc.c index 33c633a..835921d 100644 --- a/arch/arm/plat-samsung/clock-clksrc.c +++ b/arch/arm/plat-samsung/clock-clksrc.c @@ -129,11 +129,16 @@ void __init_or_cpufreq s3c_set_clksrc(struct clksrc_clk *clk, bool announce) { struct clksrc_sources *srcs = clk->sources; u32 mask = bit_mask(clk->reg_src.shift, clk->reg_src.size); - u32 clksrc = 0; - - if (clk->reg_src.reg) - clksrc = __raw_readl(clk->reg_src.reg); + u32 clksrc; + if (!clk->reg_src.reg) { + if (!clk->clk.parent) + printk(KERN_ERR "%s: no parent clock specified\n", + clk->clk.name); + return; + } + + clksrc = __raw_readl(clk->reg_src.reg); clksrc &= mask; clksrc >>= clk->reg_src.shift; -- 1.6.3.3 -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
