diff mbox series

[v3,07/10] pinctrl: baytrail: use gpiochip_dup_line_label()

Message ID 20231204093509.19225-8-brgl@bgdev.pl
State New
Headers show
Series gpio/pinctrl: replace gpiochip_is_requested() with a safer interface | expand

Commit Message

Bartosz Golaszewski Dec. 4, 2023, 9:35 a.m. UTC 
From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>

Use the new gpiochip_dup_line_label() helper to safely retrieve the
descriptor label.

Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
---
 drivers/pinctrl/intel/pinctrl-baytrail.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

Comments

Andy Shevchenko Dec. 4, 2023, 1:18 p.m. UTC | #1 
On Mon, Dec 04, 2023 at 10:35:06AM +0100, Bartosz Golaszewski wrote:
> From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> 
> Use the new gpiochip_dup_line_label() helper to safely retrieve the
> descriptor label.

Fine by me,
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

Still would be nice to have an immutable tag/branch with the first and
this patches (at least) that I can incorporate into my pin control tree
(TBH I do not expect collisions, but just in case).
Bartosz Golaszewski Dec. 4, 2023, 1:38 p.m. UTC | #2 
On Mon, Dec 4, 2023 at 2:19 PM Andy Shevchenko
<andriy.shevchenko@linux.intel.com> wrote:
>
> On Mon, Dec 04, 2023 at 10:35:06AM +0100, Bartosz Golaszewski wrote:
> > From: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
> >
> > Use the new gpiochip_dup_line_label() helper to safely retrieve the
> > descriptor label.
>
> Fine by me,
> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
>
> Still would be nice to have an immutable tag/branch with the first and
> this patches (at least) that I can incorporate into my pin control tree
> (TBH I do not expect collisions, but just in case).
>

Sure, I said in the cover letter, I will provide one.

Bart

> --
> With Best Regards,
> Andy Shevchenko
>
>
diff mbox series

Patch

diff --git a/drivers/pinctrl/intel/pinctrl-baytrail.c b/drivers/pinctrl/intel/pinctrl-baytrail.c
index 3cd0798ee631..3c8c02043481 100644
--- a/drivers/pinctrl/intel/pinctrl-baytrail.c
+++ b/drivers/pinctrl/intel/pinctrl-baytrail.c
@@ -9,6 +9,7 @@ 
 #include <linux/acpi.h>
 #include <linux/array_size.h>
 #include <linux/bitops.h>
+#include <linux/cleanup.h>
 #include <linux/gpio/driver.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
@@ -1173,7 +1174,6 @@  static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 		const char *pull_str = NULL;
 		const char *pull = NULL;
 		unsigned long flags;
-		const char *label;
 		unsigned int pin;
 
 		pin = vg->soc->pins[i].number;
@@ -1200,9 +1200,10 @@  static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 			seq_printf(s, "Pin %i: can't retrieve community\n", pin);
 			continue;
 		}
-		label = gpiochip_is_requested(chip, i);
-		if (!label)
-			label = "Unrequested";
+
+		char *label __free(kfree) = gpiochip_dup_line_label(chip, i);
+		if (IS_ERR(label))
+			continue;
 
 		switch (conf0 & BYT_PULL_ASSIGN_MASK) {
 		case BYT_PULL_ASSIGN_UP:
@@ -1231,7 +1232,7 @@  static void byt_gpio_dbg_show(struct seq_file *s, struct gpio_chip *chip)
 		seq_printf(s,
 			   " gpio-%-3d (%-20.20s) %s %s %s pad-%-3d offset:0x%03x mux:%d %s%s%s",
 			   pin,
-			   label,
+			   label ?: "Unrequested",
 			   val & BYT_INPUT_EN ? "  " : "in",
 			   val & BYT_OUTPUT_EN ? "   " : "out",
 			   str_hi_lo(val & BYT_LEVEL),