[PATCH v5 10/36] PM / devfreq: tegra20: Silence deferred probe error

Dmitry Osipenko
2020-08-14T00:07:34Z

Tegra EMC driver was turned into a regular kernel driver, it also could
be compiled as a loadable kernel module now. Hence EMC clock isn't
guaranteed to be available and clk_get("emc") may return -EPROBE_DEFER and
there is no good reason to spam KMSG with a error about missing EMC clock
in this case, so let's silence the deferred probe error.

Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
---
drivers/devfreq/tegra20-devfreq.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/devfreq/tegra20-devfreq.c b/drivers/devfreq/tegra20-devfreq.c
index ff82bac9ee4e..6469dc69c5e0 100644
--- a/drivers/devfreq/tegra20-devfreq.c
+++ b/drivers/devfreq/tegra20-devfreq.c
@@ -141,9 +141,11 @@ static int tegra_devfreq_probe(struct platform_device *pdev)

/* EMC is a system-critical clock that is always enabled */
tegra->emc_clock = devm_clk_get(&pdev->dev, "emc");
- if (IS_ERR(tegra->emc_clock)) {
- err = PTR_ERR(tegra->emc_clock);
- dev_err(&pdev->dev, "failed to get emc clock: %d\n", err);
+ err = PTR_ERR_OR_ZERO(tegra->emc_clock);
+ if (err) {
+ if (err != -EPROBE_DEFER)
+ dev_err(&pdev->dev, "failed to get emc clock: %d\n",
+ err);
return err;
}

--
2.27.0