| Message ID | 20201206190247.1861316-3-sam@ravnborg.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | drivers/video: W=1 warning fixes | expand |
On 12/6/20 11:02 AM, Sam Ravnborg wrote: > Fix kernel-doc warnings reported when using W=1 > > v2: > - Improve subject (Lee) > > v3: > - Add RETURNS documentation (Thomas) Hi Sam, Yes, RETURNS: will work. It just looks like any kernel-doc section name, such as Context: or Note:. However, the documented format for return info is "Return:". (see Documentation/doc-guide/kernel-doc.rst) > Signed-off-by: Sam Ravnborg <sam@ravnborg.org> > Cc: Lee Jones <lee.jones@linaro.org> > Cc: Sam Ravnborg <sam@ravnborg.org> > Cc: Randy Dunlap <rdunlap@infradead.org> > Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> > Cc: Daniel Vetter <daniel.vetter@ffwll.ch> > Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de> > --- > drivers/video/fbdev/core/fb_notify.c | 10 ++++++++++ > drivers/video/fbdev/core/fbmon.c | 2 +- > 2 files changed, 11 insertions(+), 1 deletion(-) > > diff --git a/drivers/video/fbdev/core/fb_notify.c b/drivers/video/fbdev/core/fb_notify.c > index 74c2da528884..4e39c61fae1f 100644 > --- a/drivers/video/fbdev/core/fb_notify.c > +++ b/drivers/video/fbdev/core/fb_notify.c > @@ -19,6 +19,9 @@ static BLOCKING_NOTIFIER_HEAD(fb_notifier_list); > /** > * fb_register_client - register a client notifier > * @nb: notifier block to callback on events > + * > + * RETURNS: > + * 0 on success, negative error code on failure. > */ > int fb_register_client(struct notifier_block *nb) > { > @@ -29,6 +32,9 @@ EXPORT_SYMBOL(fb_register_client); > /** > * fb_unregister_client - unregister a client notifier > * @nb: notifier block to callback on events > + * > + * RETURNS: > + * 0 on success, negative error code on failure. > */ > int fb_unregister_client(struct notifier_block *nb) > { > @@ -38,7 +44,11 @@ EXPORT_SYMBOL(fb_unregister_client); > > /** > * fb_notifier_call_chain - notify clients of fb_events > + * @val: value passed to callback > + * @v: pointer passed to callback > * > + * RETURNS: > + * The return value of the last notifier function > */ > int fb_notifier_call_chain(unsigned long val, void *v) > { > diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c > index 1bf82dbc9e3c..b0e690f41025 100644 > --- a/drivers/video/fbdev/core/fbmon.c > +++ b/drivers/video/fbdev/core/fbmon.c > @@ -605,6 +605,7 @@ static void get_detailed_timing(unsigned char *block, > * fb_create_modedb - create video mode database > * @edid: EDID data > * @dbsize: database size > + * @specs: monitor specifications, may be NULL > * > * RETURNS: struct fb_videomode, @dbsize contains length of database > *
Hi Randy. On Sun, Dec 06, 2020 at 11:37:17AM -0800, Randy Dunlap wrote: > On 12/6/20 11:02 AM, Sam Ravnborg wrote: > > Fix kernel-doc warnings reported when using W=1 > > > > v2: > > - Improve subject (Lee) > > > > v3: > > - Add RETURNS documentation (Thomas) > > Hi Sam, > > Yes, RETURNS: will work. It just looks like any kernel-doc section name, > such as Context: or Note:. > However, the documented format for return info is "Return:". > (see Documentation/doc-guide/kernel-doc.rst) OK, like this? I did not fix any existing uses of RETURNS, thats for another patch. Sam commit 03b7c3ecf7cb51b5429ca0ef58a32bb4dc486610 Author: Sam Ravnborg <sam@ravnborg.org> Date: Sat Nov 28 23:40:49 2020 +0100 video: fbdev: core: Fix kernel-doc warnings in fbmon + fb_notify Fix kernel-doc warnings reported when using W=1 v2: - Improve subject (Lee) v3: - Add RETURNS documentation (Thomas) v4: - Use Return: not RETURNS (Randy) Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Lee Jones <lee.jones@linaro.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de> diff --git a/drivers/video/fbdev/core/fb_notify.c b/drivers/video/fbdev/core/fb_notify.c index 74c2da528884..10e3b9a74adc 100644 --- a/drivers/video/fbdev/core/fb_notify.c +++ b/drivers/video/fbdev/core/fb_notify.c @@ -19,6 +19,8 @@ static BLOCKING_NOTIFIER_HEAD(fb_notifier_list); /** * fb_register_client - register a client notifier * @nb: notifier block to callback on events + * + * Return: 0 on success, negative error code on failure. */ int fb_register_client(struct notifier_block *nb) { @@ -29,6 +31,8 @@ EXPORT_SYMBOL(fb_register_client); /** * fb_unregister_client - unregister a client notifier * @nb: notifier block to callback on events + * + * Return: 0 on success, negative error code on failure. */ int fb_unregister_client(struct notifier_block *nb) { @@ -38,7 +42,10 @@ EXPORT_SYMBOL(fb_unregister_client); /** * fb_notifier_call_chain - notify clients of fb_events + * @val: value passed to callback + * @v: pointer passed to callback * + * Return: The return value of the last notifier function */ int fb_notifier_call_chain(unsigned long val, void *v) { diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c index 1bf82dbc9e3c..b0e690f41025 100644 --- a/drivers/video/fbdev/core/fbmon.c +++ b/drivers/video/fbdev/core/fbmon.c @@ -605,6 +605,7 @@ static void get_detailed_timing(unsigned char *block, * fb_create_modedb - create video mode database * @edid: EDID data * @dbsize: database size + * @specs: monitor specifications, may be NULL * * RETURNS: struct fb_videomode, @dbsize contains length of database * @@ -1100,7 +1101,6 @@ static u32 fb_get_hblank_by_hfreq(u32 hfreq, u32 xres) * 2 * M * M = 300; * C = 30; - */ static u32 fb_get_hblank_by_dclk(u32 dclk, u32 xres) {
On 12/6/20 12:52 PM, Sam Ravnborg wrote: > Hi Randy. > > On Sun, Dec 06, 2020 at 11:37:17AM -0800, Randy Dunlap wrote: >> On 12/6/20 11:02 AM, Sam Ravnborg wrote: >>> Fix kernel-doc warnings reported when using W=1 >>> >>> v2: >>> - Improve subject (Lee) >>> >>> v3: >>> - Add RETURNS documentation (Thomas) >> >> Hi Sam, >> >> Yes, RETURNS: will work. It just looks like any kernel-doc section name, >> such as Context: or Note:. >> However, the documented format for return info is "Return:". >> (see Documentation/doc-guide/kernel-doc.rst) > OK, like this? Yes. LGTM. Acked-by: Randy Dunlap <rdunlap@infradead.org> > I did not fix any existing uses of RETURNS, thats for another patch. > > Sam > > commit 03b7c3ecf7cb51b5429ca0ef58a32bb4dc486610 > Author: Sam Ravnborg <sam@ravnborg.org> > Date: Sat Nov 28 23:40:49 2020 +0100 > > video: fbdev: core: Fix kernel-doc warnings in fbmon + fb_notify > > Fix kernel-doc warnings reported when using W=1 > > v2: > - Improve subject (Lee) > > v3: > - Add RETURNS documentation (Thomas) > > v4: > - Use Return: not RETURNS (Randy) > > Signed-off-by: Sam Ravnborg <sam@ravnborg.org> > Cc: Lee Jones <lee.jones@linaro.org> > Cc: Sam Ravnborg <sam@ravnborg.org> > Cc: Randy Dunlap <rdunlap@infradead.org> > Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> > Cc: Daniel Vetter <daniel.vetter@ffwll.ch> > Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de>
Hi Am 06.12.20 um 20:37 schrieb Randy Dunlap: > On 12/6/20 11:02 AM, Sam Ravnborg wrote: >> Fix kernel-doc warnings reported when using W=1 >> >> v2: >> - Improve subject (Lee) >> >> v3: >> - Add RETURNS documentation (Thomas) > > Hi Sam, > > Yes, RETURNS: will work. It just looks like any kernel-doc section name, > such as Context: or Note:. > However, the documented format for return info is "Return:". > (see Documentation/doc-guide/kernel-doc.rst) Thanks for the note. I asked for RETURNS: because the rest of the file appears to be using it. Returns: is certainly the better alternative. I didn't know there was a difference. Best regards Thomas > > >> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> >> Cc: Lee Jones <lee.jones@linaro.org> >> Cc: Sam Ravnborg <sam@ravnborg.org> >> Cc: Randy Dunlap <rdunlap@infradead.org> >> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> >> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> >> Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de> >> --- >> drivers/video/fbdev/core/fb_notify.c | 10 ++++++++++ >> drivers/video/fbdev/core/fbmon.c | 2 +- >> 2 files changed, 11 insertions(+), 1 deletion(-) >> >> diff --git a/drivers/video/fbdev/core/fb_notify.c b/drivers/video/fbdev/core/fb_notify.c >> index 74c2da528884..4e39c61fae1f 100644 >> --- a/drivers/video/fbdev/core/fb_notify.c >> +++ b/drivers/video/fbdev/core/fb_notify.c >> @@ -19,6 +19,9 @@ static BLOCKING_NOTIFIER_HEAD(fb_notifier_list); >> /** >> * fb_register_client - register a client notifier >> * @nb: notifier block to callback on events >> + * >> + * RETURNS: >> + * 0 on success, negative error code on failure. >> */ >> int fb_register_client(struct notifier_block *nb) >> { >> @@ -29,6 +32,9 @@ EXPORT_SYMBOL(fb_register_client); >> /** >> * fb_unregister_client - unregister a client notifier >> * @nb: notifier block to callback on events >> + * >> + * RETURNS: >> + * 0 on success, negative error code on failure. >> */ >> int fb_unregister_client(struct notifier_block *nb) >> { >> @@ -38,7 +44,11 @@ EXPORT_SYMBOL(fb_unregister_client); >> >> /** >> * fb_notifier_call_chain - notify clients of fb_events >> + * @val: value passed to callback >> + * @v: pointer passed to callback >> * >> + * RETURNS: >> + * The return value of the last notifier function >> */ >> int fb_notifier_call_chain(unsigned long val, void *v) >> { >> diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c >> index 1bf82dbc9e3c..b0e690f41025 100644 >> --- a/drivers/video/fbdev/core/fbmon.c >> +++ b/drivers/video/fbdev/core/fbmon.c >> @@ -605,6 +605,7 @@ static void get_detailed_timing(unsigned char *block, >> * fb_create_modedb - create video mode database >> * @edid: EDID data >> * @dbsize: database size >> + * @specs: monitor specifications, may be NULL >> * >> * RETURNS: struct fb_videomode, @dbsize contains length of database >> * > >
On 12/7/20 12:16 AM, Thomas Zimmermann wrote: > Hi > > Am 06.12.20 um 20:37 schrieb Randy Dunlap: >> On 12/6/20 11:02 AM, Sam Ravnborg wrote: >>> Fix kernel-doc warnings reported when using W=1 >>> >>> v2: >>> - Improve subject (Lee) >>> >>> v3: >>> - Add RETURNS documentation (Thomas) >> >> Hi Sam, >> >> Yes, RETURNS: will work. It just looks like any kernel-doc section name, >> such as Context: or Note:. >> However, the documented format for return info is "Return:". >> (see Documentation/doc-guide/kernel-doc.rst) > > Thanks for the note. I asked for RETURNS: because the rest of the file appears to be using it. Returns: is certainly the better alternative. I didn't know there was a difference. > > Best regards > Thomas > I'm not insisting on using Return: It can stay the same as the rest of the file IMO. >> >> >>> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> >>> Cc: Lee Jones <lee.jones@linaro.org> >>> Cc: Sam Ravnborg <sam@ravnborg.org> >>> Cc: Randy Dunlap <rdunlap@infradead.org> >>> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> >>> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> >>> Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de> >>> --- >>> drivers/video/fbdev/core/fb_notify.c | 10 ++++++++++ >>> drivers/video/fbdev/core/fbmon.c | 2 +- >>> 2 files changed, 11 insertions(+), 1 deletion(-)
Hi Randy, > >> > >> Yes, RETURNS: will work. It just looks like any kernel-doc section name, > >> such as Context: or Note:. > >> However, the documented format for return info is "Return:". > >> (see Documentation/doc-guide/kernel-doc.rst) > > > > Thanks for the note. I asked for RETURNS: because the rest of the file appears to be using it. Returns: is certainly the better alternative. I didn't know there was a difference. > > > > Best regards > > Thomas > > > > I'm not insisting on using Return: > It can stay the same as the rest of the file IMO. fb_notify.c contains only the three functions modified in this patch. So it is consistent within this file, but other fbdev/core/ files uses RETURNS. git grep shows 5 hits only. So we will stick with the documented practice here. Sam
diff --git a/drivers/video/fbdev/core/fb_notify.c b/drivers/video/fbdev/core/fb_notify.c index 74c2da528884..4e39c61fae1f 100644 --- a/drivers/video/fbdev/core/fb_notify.c +++ b/drivers/video/fbdev/core/fb_notify.c @@ -19,6 +19,9 @@ static BLOCKING_NOTIFIER_HEAD(fb_notifier_list); /** * fb_register_client - register a client notifier * @nb: notifier block to callback on events + * + * RETURNS: + * 0 on success, negative error code on failure. */ int fb_register_client(struct notifier_block *nb) { @@ -29,6 +32,9 @@ EXPORT_SYMBOL(fb_register_client); /** * fb_unregister_client - unregister a client notifier * @nb: notifier block to callback on events + * + * RETURNS: + * 0 on success, negative error code on failure. */ int fb_unregister_client(struct notifier_block *nb) { @@ -38,7 +44,11 @@ EXPORT_SYMBOL(fb_unregister_client); /** * fb_notifier_call_chain - notify clients of fb_events + * @val: value passed to callback + * @v: pointer passed to callback * + * RETURNS: + * The return value of the last notifier function */ int fb_notifier_call_chain(unsigned long val, void *v) { diff --git a/drivers/video/fbdev/core/fbmon.c b/drivers/video/fbdev/core/fbmon.c index 1bf82dbc9e3c..b0e690f41025 100644 --- a/drivers/video/fbdev/core/fbmon.c +++ b/drivers/video/fbdev/core/fbmon.c @@ -605,6 +605,7 @@ static void get_detailed_timing(unsigned char *block, * fb_create_modedb - create video mode database * @edid: EDID data * @dbsize: database size + * @specs: monitor specifications, may be NULL * * RETURNS: struct fb_videomode, @dbsize contains length of database * @@ -1100,7 +1101,6 @@ static u32 fb_get_hblank_by_hfreq(u32 hfreq, u32 xres) * 2 * M * M = 300; * C = 30; - */ static u32 fb_get_hblank_by_dclk(u32 dclk, u32 xres) {
Fix kernel-doc warnings reported when using W=1 v2: - Improve subject (Lee) v3: - Add RETURNS documentation (Thomas) Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Lee Jones <lee.jones@linaro.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: "Alexander A. Klimov" <grandmaster@al2klimov.de> --- drivers/video/fbdev/core/fb_notify.c | 10 ++++++++++ drivers/video/fbdev/core/fbmon.c | 2 +- 2 files changed, 11 insertions(+), 1 deletion(-)