linux-kernel - Re: [PATCH v2] iio: imu: inv_mpu6050: Mark acpi match table as maybe unused

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Message-ID: <BL0PR12MB5011F73C07A4EB499BCEBCC0C4D99@BL0PR12MB5011.namprd12.prod.outlook.com>
Date:   Mon, 13 Sep 2021 12:19:10 +0000
From:   Jean-Baptiste Maneyrol <JManeyrol@...ensense.com>
To:     Daniel Palmer <daniel@...f.com>,
        "jic23@...nel.org" <jic23@...nel.org>,
        "lars@...afoo.de" <lars@...afoo.de>,
        "linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2] iio: imu: inv_mpu6050: Mark acpi match table as maybe
 unused

Hello,

looks obviously good to me.
Thanks for your patch.

Acked-by: Jean-Baptiste Maneyrol <jmaneyrol@...ensense.com>

Thanks,
JB

From: Daniel Palmer <daniel@...f.com>
Sent: Monday, September 13, 2021 13:29
To: jic23@...nel.org <jic23@...nel.org>; lars@...afoo.de <lars@...afoo.de>; Jean-Baptiste Maneyrol <jmaneyrol@...ensense.com>; linux-iio@...r.kernel.org <linux-iio@...r.kernel.org>
Cc: linux-kernel@...r.kernel.org <linux-kernel@...r.kernel.org>; Daniel Palmer <daniel@...f.com>
Subject: [PATCH v2] iio: imu: inv_mpu6050: Mark acpi match table as maybe unused 
 
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When building kernels without ACPI support the table is declared
but is not used because ACPI_PTR() turns it into a NULL.

Add the __maybe_unused attribute to stop the compiler whining.

Signed-off-by: Daniel Palmer <daniel@...f.com>
---
Ignore the first version. I'm an idiot and generated a patch,
check that it worked, noticed it didn't, fixed it up and then
forgot to regenerate the patch before sending it.

 drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
index 95f16951c8f4..3ef17e3f50e2 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
@@ -249,7 +249,7 @@ static const struct of_device_id inv_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, inv_of_match);
 
-static const struct acpi_device_id inv_acpi_match[] = {
+static const struct acpi_device_id __maybe_unused inv_acpi_match[] = {
         {"INVN6500", INV_MPU6500},
         { },
 };
-- 
2.33.0