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authorThomas Weißschuh <linux@weissschuh.net>2023-10-12 13:23:38 +0300
committerBenjamin Tissoires <bentiss@kernel.org>2023-10-25 19:33:42 +0300
commitdf8b030d82dd1224881acb4e778fa06c4824f72b (patch)
tree71116db8edf3f34ad755aa8b781fe8e989bd92b4 /include/linux/hid.h
parentbab19d1b21547046b0a38dde948086f6cbcaefaa (diff)
downloadlinux-df8b030d82dd1224881acb4e778fa06c4824f72b.tar.xz
HID: core: remove #ifdef CONFIG_PM from hid_driver
Allow HID drivers to pass ->suspend, ->resume and ->reset_resume via pm_ptr(). Through the usage of pm_ptr() the CONFIG_PM-dependent code will always be compiled, protecting against bitrot. The linker will then garbage-collect the unused function avoiding any overhead. The only overhead in the final kernel image and at runtime are a few extra bytes in 'struct hid_driver'. The same approach is chosen by 'struct usb_driver' and other subsystems. Signed-off-by: Thomas Weißschuh <linux@weissschuh.net> Link: https://lore.kernel.org/r/20231012-hid-pm_ptr-v1-1-0a71531ca93b@weissschuh.net Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
Diffstat (limited to 'include/linux/hid.h')
-rw-r--r--include/linux/hid.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/hid.h b/include/linux/hid.h
index 964ca1f15e3f..5a8387a4a712 100644
--- a/include/linux/hid.h
+++ b/include/linux/hid.h
@@ -833,11 +833,11 @@ struct hid_driver {
void (*feature_mapping)(struct hid_device *hdev,
struct hid_field *field,
struct hid_usage *usage);
-#ifdef CONFIG_PM
+
int (*suspend)(struct hid_device *hdev, pm_message_t message);
int (*resume)(struct hid_device *hdev);
int (*reset_resume)(struct hid_device *hdev);
-#endif
+
/* private: */
struct device_driver driver;
};