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mmc: core: shut up "voltage-ranges unspecified" pr_info()

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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>
This commit is contained in:
Russell King 2016-01-29 09:43:50 +00:00 committed by Ulf Hansson
parent 14d5828f4e
commit 10a16a01d8
1 changed files with 6 additions and 2 deletions
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8
drivers/mmc/core/core.c
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@ -1214,8 +1214,12 @@ 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;
}