| Message ID | 20240228-device_cleanup-power-v1-1-52c0321c48e1@marliere.net |
|---|---|
| State | Accepted |
| Commit | ea4367c40c79a5f16cb0de8a94a6b72697d37f06 |
| Headers | show |
| Series | power: supply: move power_supply_attr_group into #ifdef block | expand |
On Wed, Feb 28, 2024 at 10:46:28AM -0300, Ricardo B. Marliere wrote: > When building with CONFIG_SYSFS=n, the build error below is triggered: > > ld: drivers/power/supply/power_supply_core.o:(.data+0x0): undefined > reference to `power_supply_attr_group' > > The problem is that power_supply_attr_group is needed in > power_supply_core.c but defined in power_supply_sysfs.c, which is only > targeted with CONFIG_SYSFS=y. Therefore, move the extern declaration into > the #ifdef block that checks for CONFIG_SYSFS, and define an empty static > const struct otherwise. This is safe because the macro __ATRIBUTE_GROUPS in > power_supply_core.c will expand into an empty attribute_group array. > > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: Nathan Chancellor <nathan@kernel.org> > Reported-by: Nathan Chancellor <nathan@kernel.org> > Link: https://lore.kernel.org/all/20240227214916.GA3699076@dev-arch.thelio-3990X/ > Fixes: 7b46b60944d7 ("power: supply: core: constify the struct device_type usage") > Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Tested-by: Nathan Chancellor <nathan@kernel.org> # build Thanks for the quick fix! > --- > This patch depends on [1]. > [1]: 20240227-fix-power_supply_init_attrs-stub-v1-1-43365e68d4b3@kernel.org > --- > drivers/power/supply/power_supply.h | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/drivers/power/supply/power_supply.h b/drivers/power/supply/power_supply.h > index 7d05756398b9..06749a534db4 100644 > --- a/drivers/power/supply/power_supply.h > +++ b/drivers/power/supply/power_supply.h > @@ -13,16 +13,16 @@ struct device; > struct device_type; > struct power_supply; > > -extern const struct attribute_group power_supply_attr_group; > - > #ifdef CONFIG_SYSFS > > extern void power_supply_init_attrs(void); > extern int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env); > +extern const struct attribute_group power_supply_attr_group; > > #else > > static inline void power_supply_init_attrs(void) {} > +static const struct attribute_group power_supply_attr_group; > #define power_supply_uevent NULL > > #endif /* CONFIG_SYSFS */ > > --- > base-commit: 837af6b0cdb2b8df56d2df35db0444cfa1ea47c2 > change-id: 20240228-device_cleanup-power-2dcfaa7b7f2b > > Best regards, > -- > Ricardo B. Marliere <ricardo@marliere.net> >
diff --git a/drivers/power/supply/power_supply.h b/drivers/power/supply/power_supply.h index 7d05756398b9..06749a534db4 100644 --- a/drivers/power/supply/power_supply.h +++ b/drivers/power/supply/power_supply.h @@ -13,16 +13,16 @@ struct device; struct device_type; struct power_supply; -extern const struct attribute_group power_supply_attr_group; - #ifdef CONFIG_SYSFS extern void power_supply_init_attrs(void); extern int power_supply_uevent(const struct device *dev, struct kobj_uevent_env *env); +extern const struct attribute_group power_supply_attr_group; #else static inline void power_supply_init_attrs(void) {} +static const struct attribute_group power_supply_attr_group; #define power_supply_uevent NULL #endif /* CONFIG_SYSFS */
When building with CONFIG_SYSFS=n, the build error below is triggered: ld: drivers/power/supply/power_supply_core.o:(.data+0x0): undefined reference to `power_supply_attr_group' The problem is that power_supply_attr_group is needed in power_supply_core.c but defined in power_supply_sysfs.c, which is only targeted with CONFIG_SYSFS=y. Therefore, move the extern declaration into the #ifdef block that checks for CONFIG_SYSFS, and define an empty static const struct otherwise. This is safe because the macro __ATRIBUTE_GROUPS in power_supply_core.c will expand into an empty attribute_group array. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Nathan Chancellor <nathan@kernel.org> Reported-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/all/20240227214916.GA3699076@dev-arch.thelio-3990X/ Fixes: 7b46b60944d7 ("power: supply: core: constify the struct device_type usage") Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> --- This patch depends on [1]. [1]: 20240227-fix-power_supply_init_attrs-stub-v1-1-43365e68d4b3@kernel.org --- drivers/power/supply/power_supply.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- base-commit: 837af6b0cdb2b8df56d2df35db0444cfa1ea47c2 change-id: 20240228-device_cleanup-power-2dcfaa7b7f2b Best regards,