RE: [PATCH v1 2/6] gpio: mlxbf2: Drop wrong use of ACPI_PTR()

From: Asmaa Mnebhi
Date: Mon Aug 16 2021 - 09:07:16 EST


Acked-by: Asmaa Mnehi <asmaa@xxxxxxxxxx>

-----Original Message-----
From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Sent: Monday, August 16, 2021 8:00 AM
To: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>; David Thompson <davthompson@xxxxxxxxxx>; linux-kernel@xxxxxxxxxxxxxxx; linux-gpio@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx; linux-acpi@xxxxxxxxxxxxxxx
Cc: Linus Walleij <linus.walleij@xxxxxxxxxx>; Bartosz Golaszewski <bgolaszewski@xxxxxxxxxxxx>; David S. Miller <davem@xxxxxxxxxxxxx>; Jakub Kicinski <kuba@xxxxxxxxxx>; Rafael J. Wysocki <rjw@xxxxxxxxxxxxx>; Asmaa Mnebhi <asmaa@xxxxxxxxxx>; Liming Sun <limings@xxxxxxxxxx>
Subject: [PATCH v1 2/6] gpio: mlxbf2: Drop wrong use of ACPI_PTR()
Importance: High

ACPI_PTR() is more harmful than helpful. For example, in this case if CONFIG_ACPI=n, the ID table left unused which is not what we want.

Instead of adding ifdeffery here and there, drop ACPI_PTR() and replace acpi.h with mod_devicetable.h.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
drivers/gpio/gpio-mlxbf2.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c index 68c471c10fa4..c0aa622fef76 100644
--- a/drivers/gpio/gpio-mlxbf2.c
+++ b/drivers/gpio/gpio-mlxbf2.c
@@ -1,6 +1,5 @@
// SPDX-License-Identifier: GPL-2.0

-#include <linux/acpi.h>
#include <linux/bitfield.h>
#include <linux/bitops.h>
#include <linux/device.h>
@@ -8,6 +7,7 @@
#include <linux/io.h>
#include <linux/ioport.h>
#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
@@ -307,14 +307,14 @@ static SIMPLE_DEV_PM_OPS(mlxbf2_pm_ops, mlxbf2_gpio_suspend, mlxbf2_gpio_resume)

static const struct acpi_device_id __maybe_unused mlxbf2_gpio_acpi_match[] = {
{ "MLNXBF22", 0 },
- {},
+ {}
};
MODULE_DEVICE_TABLE(acpi, mlxbf2_gpio_acpi_match);

static struct platform_driver mlxbf2_gpio_driver = {
.driver = {
.name = "mlxbf2_gpio",
- .acpi_match_table = ACPI_PTR(mlxbf2_gpio_acpi_match),
+ .acpi_match_table = mlxbf2_gpio_acpi_match,
.pm = &mlxbf2_pm_ops,
},
.probe = mlxbf2_gpio_probe,
--
2.30.2