| Message ID | 20240314095813.1326057-1-lizhijian@fujitsu.com |
|---|---|
| State | New |
| Headers | show |
| Series | [v2] fbdev: uvesafb: Convert sprintf/snprintf to sysfs_emit | expand |
On 3/14/24 10:58, Li Zhijian wrote: > Per filesystems/sysfs.rst, show() should only use sysfs_emit() > or sysfs_emit_at() when formatting the value to be returned to user space. > > coccinelle complains that there are still a couple of functions that use > snprintf(). Convert them to sysfs_emit(). > > sprintf() will be converted as weel if they have. > > Generally, this patch is generated by > make coccicheck M=<path/to/file> MODE=patch \ > COCCI=scripts/coccinelle/api/device_attr_show.cocci > > No functional change intended > > CC: Helge Deller <deller@gmx.de> > CC: linux-fbdev@vger.kernel.org > CC: dri-devel@lists.freedesktop.org > Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> applied. Thanks! Helge > --- > This is a part of the work "Fix coccicheck device_attr_show warnings"[1] > Split them per subsystem so that the maintainer can review it easily > [1] https://lore.kernel.org/lkml/20240116041129.3937800-1-lizhijian@fujitsu.com/ > --- > drivers/video/fbdev/uvesafb.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c > index e1f421e91b4f..73f00c079a94 100644 > --- a/drivers/video/fbdev/uvesafb.c > +++ b/drivers/video/fbdev/uvesafb.c > @@ -1546,7 +1546,7 @@ static ssize_t uvesafb_show_vbe_ver(struct device *dev, > struct fb_info *info = dev_get_drvdata(dev); > struct uvesafb_par *par = info->par; > > - return snprintf(buf, PAGE_SIZE, "%.4x\n", par->vbe_ib.vbe_version); > + return sysfs_emit(buf, "%.4x\n", par->vbe_ib.vbe_version); > } > > static DEVICE_ATTR(vbe_version, S_IRUGO, uvesafb_show_vbe_ver, NULL);
diff --git a/drivers/video/fbdev/uvesafb.c b/drivers/video/fbdev/uvesafb.c index e1f421e91b4f..73f00c079a94 100644 --- a/drivers/video/fbdev/uvesafb.c +++ b/drivers/video/fbdev/uvesafb.c @@ -1546,7 +1546,7 @@ static ssize_t uvesafb_show_vbe_ver(struct device *dev, struct fb_info *info = dev_get_drvdata(dev); struct uvesafb_par *par = info->par; - return snprintf(buf, PAGE_SIZE, "%.4x\n", par->vbe_ib.vbe_version); + return sysfs_emit(buf, "%.4x\n", par->vbe_ib.vbe_version); } static DEVICE_ATTR(vbe_version, S_IRUGO, uvesafb_show_vbe_ver, NULL);
Per filesystems/sysfs.rst, show() should only use sysfs_emit() or sysfs_emit_at() when formatting the value to be returned to user space. coccinelle complains that there are still a couple of functions that use snprintf(). Convert them to sysfs_emit(). sprintf() will be converted as weel if they have. Generally, this patch is generated by make coccicheck M=<path/to/file> MODE=patch \ COCCI=scripts/coccinelle/api/device_attr_show.cocci No functional change intended CC: Helge Deller <deller@gmx.de> CC: linux-fbdev@vger.kernel.org CC: dri-devel@lists.freedesktop.org Signed-off-by: Li Zhijian <lizhijian@fujitsu.com> --- This is a part of the work "Fix coccicheck device_attr_show warnings"[1] Split them per subsystem so that the maintainer can review it easily [1] https://lore.kernel.org/lkml/20240116041129.3937800-1-lizhijian@fujitsu.com/ --- drivers/video/fbdev/uvesafb.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)