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sh: clkfwk: Fix up rate rounding error handling. 

According to the linux/clk.h definition we should be handing back an
errno value or a valid rate. This fixes up the case where 0 can be
returned for invalid frequencies or cases where rounding has no
selectable candidate.

Reported-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
hifive-unleashed-5.1
Paul Mundt 2010-11-01 15:30:31 -04:00
parent 3985c7ce85
commit 5aefa34fad
1 changed files with 2 additions and 2 deletions
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4
drivers/sh/clk/core.c
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@ -90,8 +90,8 @@ struct clk_rate_round_data {
static long clk_rate_round_helper(struct clk_rate_round_data *rounder)
{
unsigned long rate_error, rate_error_prev = ~0UL;
unsigned long rate_best_fit = rounder->rate;
unsigned long highest, lowest, freq;
long rate_best_fit = -ENOENT;
int i;
highest = 0;
@ -146,7 +146,7 @@ long clk_rate_table_round(struct clk *clk,
};
if (clk->nr_freqs < 1)
return 0;
return -ENOSYS;
return clk_rate_round_helper(&table_round);
}