linux-kernel - [PATCH] gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230616145036.3910153-1-arnd@kernel.org>
Date:   Fri, 16 Jun 2023 16:50:33 +0200
From:   Arnd Bergmann <arnd@...nel.org>
To:     Shubhrajyoti Datta <shubhrajyoti.datta@....com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Michal Simek <michal.simek@....com>,
        Manikanta Guntupalli <manikanta.guntupalli@....com>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Srinivas Neeli <srinivas.neeli@....com>,
        Andy Shevchenko <andy@...nel.org>, linux-gpio@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] gpio: synq: remove unused zynq_gpio_irq_reqres/zynq_gpio_irq_relres

From: Arnd Bergmann <arnd@...db.de>

The driver now uses the generic request/release callbacks, so the custom
ones are no longer called. When building with -Woverride-init, gcc produces
a warning about the duplicate entries:

In file included from drivers/gpio/gpio-zynq.c:10:
include/linux/gpio/driver.h:621:43: error: initialized field overwritten [-Werror=override-init]
  621 |                 .irq_request_resources  = gpiochip_irq_reqres,          \
      |                                           ^~~~~~~~~~~~~~~~~~~
drivers/gpio/gpio-zynq.c:611:9: note: in expansion of macro 'GPIOCHIP_IRQ_RESOURCE_HELPERS'
  611 |         GPIOCHIP_IRQ_RESOURCE_HELPERS,
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/gpio/driver.h:621:43: note: (near initialization for 'zynq_gpio_level_irqchip.irq_request_resources')
  621 |                 .irq_request_resources  = gpiochip_irq_reqres,          \
      |                                           ^~~~~~~~~~~~~~~~~~~
drivers/gpio/gpio-zynq.c:625:9: note: in expansion of macro 'GPIOCHIP_IRQ_RESOURCE_HELPERS'
  625 |         GPIOCHIP_IRQ_RESOURCE_HELPERS,
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/gpio/driver.h:622:43: error: initialized field overwritten [-Werror=override-init]
  622 |                 .irq_release_resources  = gpiochip_irq_relres
      |                                           ^~~~~~~~~~~~~~~~~~~

Removing the old ones has no effect on the driver but avoids the warnings.

Fixes: f569143935378 ("gpio: zynq: fix zynqmp_gpio not an immutable chip warning")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
 drivers/gpio/gpio-zynq.c | 24 ------------------------
 1 file changed, 24 deletions(-)

diff --git a/drivers/gpio/gpio-zynq.c b/drivers/gpio/gpio-zynq.c
index c334e46033bae..0a7264aabe488 100644
--- a/drivers/gpio/gpio-zynq.c
+++ b/drivers/gpio/gpio-zynq.c
@@ -575,26 +575,6 @@ static int zynq_gpio_set_wake(struct irq_data *data, unsigned int on)
 	return 0;
 }
 
-static int zynq_gpio_irq_reqres(struct irq_data *d)
-{
-	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
-	int ret;
-
-	ret = pm_runtime_resume_and_get(chip->parent);
-	if (ret < 0)
-		return ret;
-
-	return gpiochip_reqres_irq(chip, d->hwirq);
-}
-
-static void zynq_gpio_irq_relres(struct irq_data *d)
-{
-	struct gpio_chip *chip = irq_data_get_irq_chip_data(d);
-
-	gpiochip_relres_irq(chip, d->hwirq);
-	pm_runtime_put(chip->parent);
-}
-
 /* irq chip descriptor */
 static const struct irq_chip zynq_gpio_level_irqchip = {
 	.name		= DRIVER_NAME,
@@ -604,8 +584,6 @@ static const struct irq_chip zynq_gpio_level_irqchip = {
 	.irq_unmask	= zynq_gpio_irq_unmask,
 	.irq_set_type	= zynq_gpio_set_irq_type,
 	.irq_set_wake	= zynq_gpio_set_wake,
-	.irq_request_resources = zynq_gpio_irq_reqres,
-	.irq_release_resources = zynq_gpio_irq_relres,
 	.flags		= IRQCHIP_EOI_THREADED | IRQCHIP_EOI_IF_HANDLED |
 			  IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE,
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
@@ -619,8 +597,6 @@ static const struct irq_chip zynq_gpio_edge_irqchip = {
 	.irq_unmask	= zynq_gpio_irq_unmask,
 	.irq_set_type	= zynq_gpio_set_irq_type,
 	.irq_set_wake	= zynq_gpio_set_wake,
-	.irq_request_resources = zynq_gpio_irq_reqres,
-	.irq_release_resources = zynq_gpio_irq_relres,
 	.flags		= IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_IMMUTABLE,
 	GPIOCHIP_IRQ_RESOURCE_HELPERS,
 };
-- 
2.39.2