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HID: google: fix unused variable warning under !CONFIG_ACPI

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[ Upstream commit 4bd0725c09 ]

As reported by the kernel test robot, the following warning occurs:

>> drivers/hid/hid-google-hammer.c:261:36: warning: 'cbas_ec_acpi_ids' defined but not used [-Wunused-const-variable=]
     261 | static const struct acpi_device_id cbas_ec_acpi_ids[] = {
         |                                    ^~~~~~~~~~~~~~~~

The 'cbas_ec_acpi_ids' array is only used when CONFIG_ACPI is enabled.
Wrapping its definition and 'MODULE_DEVICE_TABLE' in '#ifdef CONFIG_ACPI'
prevents a compiler warning when ACPI is disabled.

Fixes: eb1aac4c87 ("HID: google: add support tablet mode switch for Whiskers")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202501201141.jctFH5eB-lkp@intel.com/
Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yu-Chun Lin
2025-02-18 00:50:13 +08:00
committed by Greg Kroah-Hartman
parent 6f6a3e6e87
commit 83a31fa2ff
1 changed files with 2 additions and 0 deletions
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2
drivers/hid/hid-google-hammer.c
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@@ -268,11 +268,13 @@ static void cbas_ec_remove(struct platform_device *pdev)
mutex_unlock(&cbas_ec_reglock);
}
#ifdef CONFIG_ACPI
static const struct acpi_device_id cbas_ec_acpi_ids[] = {
{ "GOOG000B", 0 },
{ }
};
MODULE_DEVICE_TABLE(acpi, cbas_ec_acpi_ids);
#endif
#ifdef CONFIG_OF
static const struct of_device_id cbas_ec_of_match[] = {