| Message ID | 20230318132708.1684504-1-trix@redhat.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ALSA: ymfpci: remove unused snd_ymfpci_readb function | expand |
On Sat, 18 Mar 2023 14:27:08 +0100, Tom Rix wrote: > > clang with W=1 reports > sound/pci/ymfpci/ymfpci_main.c:34:18: error: > unused function 'snd_ymfpci_readb' [-Werror,-Wunused-function] > static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) > ^ > This static function is not used, so remove it. > > Signed-off-by: Tom Rix <trix@redhat.com> I applied now, but still wondering why it warns at all even if it's a static inline function... thanks, Takashi > --- > sound/pci/ymfpci/ymfpci_main.c | 5 ----- > 1 file changed, 5 deletions(-) > > diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c > index c80114c0ad7b..2858736ed20a 100644 > --- a/sound/pci/ymfpci/ymfpci_main.c > +++ b/sound/pci/ymfpci/ymfpci_main.c > @@ -31,11 +31,6 @@ > > static void snd_ymfpci_irq_wait(struct snd_ymfpci *chip); > > -static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) > -{ > - return readb(chip->reg_area_virt + offset); > -} > - > static inline void snd_ymfpci_writeb(struct snd_ymfpci *chip, u32 offset, u8 val) > { > writeb(val, chip->reg_area_virt + offset); > -- > 2.27.0 >
On Sun, Mar 19, 2023 at 09:09:22AM +0100, Takashi Iwai wrote: > On Sat, 18 Mar 2023 14:27:08 +0100, > Tom Rix wrote: > > > > clang with W=1 reports > > sound/pci/ymfpci/ymfpci_main.c:34:18: error: > > unused function 'snd_ymfpci_readb' [-Werror,-Wunused-function] > > static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) > > ^ > > This static function is not used, so remove it. > > > > Signed-off-by: Tom Rix <trix@redhat.com> > > I applied now, but still wondering why it warns at all even if it's a > static inline function... See commit 6863f5643dd7 ("kbuild: allow Clang to find unused static inline functions for W=1 build") for some more information. The key part of the commit message is 'with W=1', this will not happen with a normal clang build. Cheers, Nathan > > --- > > sound/pci/ymfpci/ymfpci_main.c | 5 ----- > > 1 file changed, 5 deletions(-) > > > > diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c > > index c80114c0ad7b..2858736ed20a 100644 > > --- a/sound/pci/ymfpci/ymfpci_main.c > > +++ b/sound/pci/ymfpci/ymfpci_main.c > > @@ -31,11 +31,6 @@ > > > > static void snd_ymfpci_irq_wait(struct snd_ymfpci *chip); > > > > -static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) > > -{ > > - return readb(chip->reg_area_virt + offset); > > -} > > - > > static inline void snd_ymfpci_writeb(struct snd_ymfpci *chip, u32 offset, u8 val) > > { > > writeb(val, chip->reg_area_virt + offset); > > -- > > 2.27.0 > >
On 3/19/23 4:34 PM, Nathan Chancellor wrote: > On Sun, Mar 19, 2023 at 09:09:22AM +0100, Takashi Iwai wrote: >> On Sat, 18 Mar 2023 14:27:08 +0100, >> Tom Rix wrote: >>> clang with W=1 reports >>> sound/pci/ymfpci/ymfpci_main.c:34:18: error: >>> unused function 'snd_ymfpci_readb' [-Werror,-Wunused-function] >>> static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) >>> ^ >>> This static function is not used, so remove it. >>> >>> Signed-off-by: Tom Rix <trix@redhat.com> >> I applied now, but still wondering why it warns at all even if it's a >> static inline function... > See commit 6863f5643dd7 ("kbuild: allow Clang to find unused static > inline functions for W=1 build") for some more information. The key part > of the commit message is 'with W=1', this will not happen with a normal > clang build. IMO from this general cleanup, being at W=1, is the correct location. There many functions that could be removed and some that should not be. Tom > > Cheers, > Nathan > >>> --- >>> sound/pci/ymfpci/ymfpci_main.c | 5 ----- >>> 1 file changed, 5 deletions(-) >>> >>> diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c >>> index c80114c0ad7b..2858736ed20a 100644 >>> --- a/sound/pci/ymfpci/ymfpci_main.c >>> +++ b/sound/pci/ymfpci/ymfpci_main.c >>> @@ -31,11 +31,6 @@ >>> >>> static void snd_ymfpci_irq_wait(struct snd_ymfpci *chip); >>> >>> -static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) >>> -{ >>> - return readb(chip->reg_area_virt + offset); >>> -} >>> - >>> static inline void snd_ymfpci_writeb(struct snd_ymfpci *chip, u32 offset, u8 val) >>> { >>> writeb(val, chip->reg_area_virt + offset); >>> -- >>> 2.27.0 >>>
diff --git a/sound/pci/ymfpci/ymfpci_main.c b/sound/pci/ymfpci/ymfpci_main.c index c80114c0ad7b..2858736ed20a 100644 --- a/sound/pci/ymfpci/ymfpci_main.c +++ b/sound/pci/ymfpci/ymfpci_main.c @@ -31,11 +31,6 @@ static void snd_ymfpci_irq_wait(struct snd_ymfpci *chip); -static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) -{ - return readb(chip->reg_area_virt + offset); -} - static inline void snd_ymfpci_writeb(struct snd_ymfpci *chip, u32 offset, u8 val) { writeb(val, chip->reg_area_virt + offset);
clang with W=1 reports sound/pci/ymfpci/ymfpci_main.c:34:18: error: unused function 'snd_ymfpci_readb' [-Werror,-Wunused-function] static inline u8 snd_ymfpci_readb(struct snd_ymfpci *chip, u32 offset) ^ This static function is not used, so remove it. Signed-off-by: Tom Rix <trix@redhat.com> --- sound/pci/ymfpci/ymfpci_main.c | 5 ----- 1 file changed, 5 deletions(-)