On Thu, 2021-01-28 at 15:56 -0800, Joe Perches wrote: > On Thu, 2021-01-28 at 15:25 -0800, Randy Dunlap wrote: > > Drop a mistaken comma in the pr_info() args to prevent the > > build warning. > > > > ../drivers/acpi/acpi_fpdt.c: In function 'acpi_init_fpdt': > > ../include/linux/kern_levels.h:5:18: warning: too many arguments > > for format [-Wformat-extra-args] > > ../drivers/acpi/acpi_fpdt.c:255:4: note: in expansion of macro > > 'pr_info' > > pr_info(FW_BUG, "Invalid subtable type %d found.\n", > > [] > > --- linux-next-20210128.orig/drivers/acpi/acpi_fpdt.c > > +++ linux-next-20210128/drivers/acpi/acpi_fpdt.c > > @@ -252,7 +252,7 @@ void acpi_init_fpdt(void) > > subtable->type); > > break; > > default: > > - pr_info(FW_BUG, "Invalid subtable type %d > > found.\n", > > + pr_info(FW_BUG "Invalid subtable type %d > > found.\n", > > subtable->type); > > Another question would be why is the pr_info when all the other > FW_BUG uses in this file are pr_err > Here, this FW_BUG just means an unrecognized subtable is found, and it should not affect the other subtables that are already supported by this driver. So that's why we didn't use pr_err. In fact, I've just posted a V2 patch, https://patchwork.kernel.org/project/linux-acpi/patch/20210129061548.13448-1-rui.zh...@intel.com/ and I prefer to continue processing even if this FW_BUG is detected.
> One would think it's at least a defect of some time. > I would think it should at least be pr_notice or pr_warn I'm also okay with pr_notice/pr_warn here. This FW_BUG should be really rare. thanks, rui > > Documentation/admin-guide/kernel > -parameters.txt- 1 > (KERN_ALERT) action must be taken immediately > Documentation/admin-guide/kernel > -parameters.txt- 2 > (KERN_CRIT) critical conditions > Documentation/admin-guide/kernel > -parameters.txt- 3 (KERN_ERR) error > conditions > Documentation/admin-guide/kernel > -parameters.txt- 4 > (KERN_WARNING) warning conditions > Documentation/admin-guide/kernel > -parameters.txt- 5 > (KERN_NOTICE) normal but significant condition > Documentation/admin-guide/kernel- > parameters.txt: 6 > (KERN_INFO) informational > Documentation/admin-guide/kernel > -parameters.txt- 7 > (KERN_DEBUG) debug-level messages > >
