On Tue, Jul 28, 2015 at 11:58:42AM +0200, Johan Hovold wrote:

On Fri, Jul 17, 2015 at 11:32:50AM +0200, Markus Pargmann wrote:

quoted

Add some information about gpio names to the debugfs gpio file. name and
label of a GPIO are then displayed next to each other. This way it is
easy to see what the real name of GPIO is and what the driver requested
it for.

Signed-off-by: Markus Pargmann <redacted>
---
 drivers/gpio/gpiolib.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index dcac3bcf21dd..0f1d1f5faf5d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c

@@ -2308,14 +2308,19 @@ static void gpiolib_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 	int			is_irq;
 
 	for (i = 0; i < chip->ngpio; i++, gpio++, gdesc++) {
-		if (!test_bit(FLAG_REQUESTED, &gdesc->flags))
+		if (!test_bit(FLAG_REQUESTED, &gdesc->flags)) {
+			if (gdesc->name) {
+				seq_printf(s, " gpio-%-3d (%-20.20s)\n",
+					   gpio, gdesc->name);
+			}

So now we'd no longer just be listing requested gpios, but on a similar
format to how requested ones used to be represented.

Better suggestions on how to display those extra information in debugfs?

Then there's the debugfs as ABI discussion...

I didn't consider debugfs as ABI as I thought it is just for debugging purposes?

Best regards,

Markus

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