From: Philipp Zabel p.zabel@pengutronix.de
[ Upstream commit d64c732dfc9edcd57feb693c23162117737e426b ]
Allow probing rfkill-gpio via device tree. This hooks up the already existing support that was started in commit 262c91ee5e52 ("net: rfkill: gpio: prepare for DT and ACPI support") via the "rfkill-gpio" compatible, with the "name" and "type" properties renamed to "label" and "radio-type", respectively, in the device tree case.
Signed-off-by: Philipp Zabel p.zabel@pengutronix.de Link: https://lore.kernel.org/r/20230102-rfkill-gpio-dt-v2-2-d1b83758c16d@pengutro... Signed-off-by: Johannes Berg johannes.berg@intel.com Stable-dep-of: b6f56a44e4c1 ("net: rfkill: gpio: Fix crash due to dereferencering uninitialized pointer") Signed-off-by: Sasha Levin sashal@kernel.org --- net/rfkill/rfkill-gpio.c | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/net/rfkill/rfkill-gpio.c b/net/rfkill/rfkill-gpio.c index 2df5bf240b64a..ecfb766c47d08 100644 --- a/net/rfkill/rfkill-gpio.c +++ b/net/rfkill/rfkill-gpio.c @@ -79,6 +79,8 @@ static int rfkill_gpio_probe(struct platform_device *pdev) { struct rfkill_gpio_data *rfkill; struct gpio_desc *gpio; + const char *name_property; + const char *type_property; const char *type_name; int ret;
@@ -86,8 +88,15 @@ static int rfkill_gpio_probe(struct platform_device *pdev) if (!rfkill) return -ENOMEM;
- device_property_read_string(&pdev->dev, "name", &rfkill->name); - device_property_read_string(&pdev->dev, "type", &type_name); + if (dev_of_node(&pdev->dev)) { + name_property = "label"; + type_property = "radio-type"; + } else { + name_property = "name"; + type_property = "type"; + } + device_property_read_string(&pdev->dev, name_property, &rfkill->name); + device_property_read_string(&pdev->dev, type_property, &type_name);
if (!rfkill->name) rfkill->name = dev_name(&pdev->dev); @@ -169,12 +178,19 @@ static const struct acpi_device_id rfkill_acpi_match[] = { MODULE_DEVICE_TABLE(acpi, rfkill_acpi_match); #endif
+static const struct of_device_id rfkill_of_match[] __maybe_unused = { + { .compatible = "rfkill-gpio", }, + { }, +}; +MODULE_DEVICE_TABLE(of, rfkill_of_match); + static struct platform_driver rfkill_gpio_driver = { .probe = rfkill_gpio_probe, .remove = rfkill_gpio_remove, .driver = { .name = "rfkill_gpio", .acpi_match_table = ACPI_PTR(rfkill_acpi_match), + .of_match_table = of_match_ptr(rfkill_of_match), }, };