diff options
| author | Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com> | 2021-04-05 15:25:40 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-14 08:41:58 +0200 |
| commit | 9b54dad28def3f7150b918291b10f6fab4068b8e (patch) | |
| tree | 98fde7fa50e1955da784f332c2c31581887d058c /drivers/of | |
| parent | 009c5665278bd213c86e14b081da5a01253fddd6 (diff) | |
of: property: fw_devlink: do not link ".*,nr-gpios"
commit d473d32c2fbac2d1d7082c61899cfebd34eb267a upstream.
[<vendor>,]nr-gpios property is used by some GPIO drivers[0] to indicate
the number of GPIOs present on a system, not define a GPIO. nr-gpios is
not configured by #gpio-cells and can't be parsed along with other
"*-gpios" properties.
nr-gpios without the "<vendor>," prefix is not allowed by the DT
spec[1], so only add exception for the ",nr-gpios" suffix and let the
error message continue being printed for non-compliant implementations.
[0] nr-gpios is referenced in Documentation/devicetree/bindings/gpio:
- gpio-adnp.txt
- gpio-xgene-sb.txt
- gpio-xlp.txt
- snps,dw-apb-gpio.yaml
[1] Link: https://github.com/devicetree-org/dt-schema/blob/cb53a16a1eb3e2169ce170c071e47940845ec26e/schemas/gpio/gpio-consumer.yaml#L20
Fixes errors such as:
OF: /palmbus@300000/gpio@600: could not find phandle
Fixes: 7f00be96f125 ("of: property: Add device link support for interrupt-parent, dmas and -gpio(s)")
Signed-off-by: Ilya Lipnitskiy <ilya.lipnitskiy@gmail.com>
Cc: Saravana Kannan <saravanak@google.com>
Cc: stable@vger.kernel.org # v5.5+
Link: https://lore.kernel.org/r/20210405222540.18145-1-ilya.lipnitskiy@gmail.com
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/property.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/of/property.c b/drivers/of/property.c index 408a7b5f06a9..1d7d24e7094b 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1308,7 +1308,16 @@ DEFINE_SIMPLE_PROP(pinctrl7, "pinctrl-7", NULL) DEFINE_SIMPLE_PROP(pinctrl8, "pinctrl-8", NULL) DEFINE_SUFFIX_PROP(regulators, "-supply", NULL) DEFINE_SUFFIX_PROP(gpio, "-gpio", "#gpio-cells") -DEFINE_SUFFIX_PROP(gpios, "-gpios", "#gpio-cells") + +static struct device_node *parse_gpios(struct device_node *np, + const char *prop_name, int index) +{ + if (!strcmp_suffix(prop_name, ",nr-gpios")) + return NULL; + + return parse_suffix_prop_cells(np, prop_name, index, "-gpios", + "#gpio-cells"); +} static struct device_node *parse_iommu_maps(struct device_node *np, const char *prop_name, int index) |