Re: [PATCH v2] clk: Show clock rate and error value when fail to set clock rate
From: Sylwester Nawrocki
Date: Mon Apr 27 2015 - 04:51:54 EST
On 27/04/15 10:46, Chanwoo Choi wrote:
>>> diff --git a/drivers/clk/clk-conf.c b/drivers/clk/clk-conf.c
>>> >> index aad4796..2b6375f 100644
>>> >> --- a/drivers/clk/clk-conf.c
>>> >> +++ b/drivers/clk/clk-conf.c
>>> >> @@ -107,8 +107,9 @@ static int __set_clk_rates(struct device_node *node, bool clk_supplier)
>>> >> rc = clk_set_rate(clk, rate);
>>> >> if (rc < 0)
>>> >> - pr_err("clk: couldn't set %s clock rate: %d\n",
>>> >> - __clk_get_name(clk), rc);
>>> >> + pr_err("clk: couldn't set %s rate to %ld (%d)\n",
>>> >> + __clk_get_name(clk), clk_get_rate(clk),
>>> >> + rc);
>> > Apologies for my previous misleading comment, with this patch
>> > you log current clock rate as the rate which was attempted to
>> > be set. And these two will likely be different when clk_set_rate()
>> > failed. So it should rather be:
>> > pr_err("clk: couldn't set %s clk rate to %ld (%d)\n",
>> > __clk_get_name(clk), rate, rc);
> I'll modify it as following without error value.
> If I add the error value, the number of character are over 80.
> pr_err("clk: couldn't set %s clk rate to %ld\n",
> __clk_get_name(clk), rate);
I wouldn't worry about line length over 80 characters, it not a hard rule.
Let's leave the error code as it might be useful for debugging.
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/