repost: input: keyboard: gpio-keys-polled: use input name from pdata

repost: input: keyboard: gpio-keys-polled: use input name from pdata

[Enrico Weigelt, metux IT consult]

Hi,

this patch had already been sent a while ago, and a discussion arised
about whether pdata support should be dropped in favour of of/acpi.

Unfortunately, the open problems - lack of proper of/acpi data and sane
ways to inject this data - remain (theoretically, could be done by writing
special fwnode backends, but that would be a whole project on its own)
and the discussion perished w/o any conclusion.

Until we have a complete and easily replacement for pdata, even for cases
where no oftree/acpi data is available and platform drivers need to be
instantiated directly, pdata structs still need to be maintained.

Therefore I'm resending this pretty trivial patch.


--mtx

[PATCH] input: keyboard: gpio-keys-polled: use input name from pdata if available

[Enrico Weigelt, metux IT consult]

Instead of hardcoding the input name to the driver name
('gpio-keys-polled'), allow the passing a name via platform data
('name' field was already present), but default to old behaviour
in case of NULL.

Even though the general tendency is moving from pdata structs,
towards oftree/acpi/fwnode, pdata structs still have their valid
use cases, when the mentioned mechanisms aren't available or don't
provide the necessary data and so driver setup still needs to be
done explicitly.

An example use case is keys+led support for the APUv2/3 boards.
Here a board specific platform driver probes the board and then
instantiates the individual devices using classic pdata.

The gpio-keys-polled currently lacks support for specifying
input device name, which is fixed by this patch.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: linux-input@vger.kernel.org
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
---
 drivers/input/keyboard/gpio_keys_polled.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/gpio_keys_polled.c b/drivers/input/keyboard/gpio_keys_polled.c
index edc7262..3312186 100644
--- a/drivers/input/keyboard/gpio_keys_polled.c
+++ b/drivers/input/keyboard/gpio_keys_polled.c
@@ -272,7 +272,7 @@ static int gpio_keys_polled_probe(struct platform_device *pdev)
 
 	input = poll_dev->input;
 
-	input->name = pdev->name;
+	input->name = (pdata->name ? pdata->name : pdev->name);
 	input->phys = DRV_NAME"/input0";
 
 	input->id.bustype = BUS_HOST;
-- 
1.9.1