From: Russell King rmk+kernel@arm.linux.org.uk
Each time a driver such as sdhci-esdhc-imx is probed, we get a info printk complaining that the DT voltage-ranges property has not been specified.
However, the DT binding specifically says that the voltage-ranges property is optional. That means we should not be complaining that DT hasn't specified this property: by indicating that it's optional, it is valid not to have the property in DT.
Silence the warning if the property is missing.
Signed-off-by: Russell King rmk+kernel@arm.linux.org.uk Signed-off-by: Ulf Hansson ulf.hansson@linaro.org (cherry picked from commit 10a16a01d8f72e80f4780e40cf3122f4caffa411) Signed-off-by: Arnd Bergmann arnd@arndb.de --- drivers/mmc/core/core.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index e2e927d1f7e4..df074f8c7cb7 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1220,8 +1220,12 @@ int mmc_of_parse_voltage(struct device_node *np, u32 *mask)
voltage_ranges = of_get_property(np, "voltage-ranges", &num_ranges); num_ranges = num_ranges / sizeof(*voltage_ranges) / 2; - if (!voltage_ranges || !num_ranges) { - pr_info("%s: voltage-ranges unspecified\n", np->full_name); + if (!voltage_ranges) { + pr_debug("%s: voltage-ranges unspecified\n", np->full_name); + return -EINVAL; + } + if (!num_ranges) { + pr_err("%s: voltage-ranges empty\n", np->full_name); return -EINVAL; }