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opp: No need to check clk for errors 

Clock is not optional for users who call into dev_pm_opp_set_rate().
Remove the unnecessary checks.

While at it also drop the local variable for clk and use opp_table->clk
instead.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
This commit is contained in:
Viresh Kumar 2021-01-20 15:57:21 +05:30
parent 5ad58bbacf
commit 1d3c42cabb
1 changed files with 4 additions and 13 deletions
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17
drivers/opp/core.c
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@ -994,7 +994,6 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
struct opp_table *opp_table;
unsigned long freq, old_freq, temp_freq;
struct dev_pm_opp *old_opp, *opp;
struct clk *clk;
int ret;
opp_table = _find_opp_table(dev);
@ -1008,19 +1007,11 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
goto put_opp_table;
}
clk = opp_table->clk;
if (IS_ERR(clk)) {
dev_err(dev, "%s: No clock available for the device\n",
__func__);
ret = PTR_ERR(clk);
goto put_opp_table;
}
freq = clk_round_rate(clk, target_freq);
freq = clk_round_rate(opp_table->clk, target_freq);
if ((long)freq <= 0)
freq = target_freq;
old_freq = clk_get_rate(clk);
old_freq = clk_get_rate(opp_table->clk);
/* Return early if nothing to do */
if (opp_table->enabled && old_freq == freq) {
@ -1038,7 +1029,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
* equivalent to a clk_set_rate()
*/
if (!_get_opp_count(opp_table)) {
ret = _generic_set_opp_clk_only(dev, clk, freq);
ret = _generic_set_opp_clk_only(dev, opp_table->clk, freq);
goto put_opp_table;
}
@ -1078,7 +1069,7 @@ int dev_pm_opp_set_rate(struct device *dev, unsigned long target_freq)
opp->supplies);
} else {
/* Only frequency scaling */
ret = _generic_set_opp_clk_only(dev, clk, freq);
ret = _generic_set_opp_clk_only(dev, opp_table->clk, freq);
}
/* Scaling down? Configure required OPPs after frequency */