| Message ID | 7f2618363d43b30db29f5f8ae822df413392f99d.1490199005.git.leonard.crestez@nxp.com (mailing list archive) |
|---|---|
| State | RFC, archived |
| Headers | show |
On 22-03-17, 18:53, Leonard Crestez wrote: > From: Irina Tirdea <irina.tirdea@nxp.com> > > If there are any errors in getting the cpu0 regulators, the driver returns > -ENOENT. In case the regulators are not yet available, the devm_regulator_get > calls will return -EPROBE_DEFER, so that the driver can be probed later. > If we return -ENOENT, the driver will fail its initialization and will > not try to probe again (when the regulators become available). > > Return the actual error received from regulator_get in probe. Print a > differentiated message in case we need to probe the device later and > in case we actually failed. Also add a message to inform when the > driver has been successfully registered. > > Signed-off-by: Irina Tirdea <irina.tirdea@nxp.com> > Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com> > --- > drivers/cpufreq/imx6q-cpufreq.c | 7 +++++++ > 1 file changed, 7 insertions(+) Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index 7719b02..be90ee3 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -222,6 +222,13 @@ static int imx6q_cpufreq_probe(struct platform_device *pdev) arm_reg = regulator_get(cpu_dev, "arm"); pu_reg = regulator_get_optional(cpu_dev, "pu"); soc_reg = regulator_get(cpu_dev, "soc"); + if (PTR_ERR(arm_reg) == -EPROBE_DEFER || + PTR_ERR(soc_reg) == -EPROBE_DEFER || + PTR_ERR(pu_reg) == -EPROBE_DEFER) { + ret = -EPROBE_DEFER; + dev_dbg(cpu_dev, "regulators not ready, defer\n"); + goto put_reg; + } if (IS_ERR(arm_reg) || IS_ERR(soc_reg)) { dev_err(cpu_dev, "failed to get regulators\n"); ret = -ENOENT;