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| author |   Viresh Kumar <viresh.kumar@linaro.org> | 2021-01-29 16:12:04 +0530 |
|---|---|---|
| committer | Viresh Kumar <viresh.kumar@linaro.org> | 2021-02-02 10:30:53 +0530 |
| commit | d4a4c7a41153d701f23322ea5d39c766e9ff6eee (patch) | |
| tree | 34a9173a10273773ed8830cc733900b68f7276dc /drivers/opp/core.c | |
| parent | opp: Update bandwidth requirements based on scaling up/down (diff) | |
| download | linux-dev-d4a4c7a41153d701f23322ea5d39c766e9ff6eee.tar.xz linux-dev-d4a4c7a41153d701f23322ea5d39c766e9ff6eee.zip | |
opp: Don't ignore clk_get() errors other than -ENOENT
Not all devices that need to use OPP core need to have clocks, a missing
clock is fine in which case -ENOENT shall be returned by clk_get().
Anything else is an error and must be handled properly.
Reported-by: Dmitry Osipenko <digetx@gmail.com>
Tested-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Diffstat (limited to 'drivers/opp/core.c')
| -rw-r--r-- | drivers/opp/core.c | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/opp/core.c b/drivers/opp/core.c index a518173fd64a..dc95d29e94c1 100644 --- a/drivers/opp/core.c +++ b/drivers/opp/core.c @@ -1252,6 +1252,8 @@ static struct opp_table *_update_opp_table_clk(struct device *dev, struct opp_table *opp_table, bool getclk) { + int ret; + /* * Return early if we don't need to get clk or we have already tried it * earlier. @@ -1261,18 +1263,20 @@ static struct opp_table *_update_opp_table_clk(struct device *dev, /* Find clk for the device */ opp_table->clk = clk_get(dev, NULL); - if (IS_ERR(opp_table->clk)) { - int ret = PTR_ERR(opp_table->clk); - if (ret == -EPROBE_DEFER) { - dev_pm_opp_put_opp_table(opp_table); - return ERR_PTR(ret); - } + ret = PTR_ERR_OR_ZERO(opp_table->clk); + if (!ret) + return opp_table; + if (ret == -ENOENT) { dev_dbg(dev, "%s: Couldn't find clock: %d\n", __func__, ret); + return opp_table; } - return opp_table; + dev_pm_opp_put_opp_table(opp_table); + dev_err_probe(dev, ret, "Couldn't find clock\n"); + + return ERR_PTR(ret); } /* |