Hi Ilpo, Thank you for reviewing this. On 7/11/24 10:41 AM, Ilpo Järvinen wrote: > On Sun, 7 Jul 2024, Carlos Ferreira wrote: > >> This driver adds supports for 4 zone keyboard rgb on omen laptops >> and maps the wmi backlight toggle event to KEY_KBDILLUMTOGGLE. >> For the backlight, it uses the multicolor led api. >> >> Tested on the HP Omen 15-en1001np. >> >> Signed-off-by: Carlos Ferreira <carlosmiguelferreira.2003@xxxxxxxxx> >> --- >> Changes in v3: >> - Moved to the multicolor led api >> - Mapped the wmi backlight toggle event to KEY_KBDILLUMTOGGLE >> - Some other minor changes >> Changes in v2: >> - Rearranged code to remove forward declarations >> - Changed from sprintf() to sysfs_emit() >> - Fixed some identation and coding style problems >> - Switched from manual bit manipulation to GENMASK(x, y) + FIELD_PREP(XX, ) >> - #define'ed magic constants >> --- >> drivers/platform/x86/hp/hp-wmi.c | 248 +++++++++++++++++++++++++++++-- >> 1 file changed, 239 insertions(+), 9 deletions(-) >> >> diff --git a/drivers/platform/x86/hp/hp-wmi.c b/drivers/platform/x86/hp/hp-wmi.c >> index 5fa553023842..5eae47961f76 100644 >> --- a/drivers/platform/x86/hp/hp-wmi.c >> +++ b/drivers/platform/x86/hp/hp-wmi.c >> @@ -14,6 +14,8 @@ >> #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt >> >> #include <linux/kernel.h> >> +#include <linux/led-class-multicolor.h> >> +#include <linux/leds.h> >> #include <linux/module.h> >> #include <linux/init.h> >> #include <linux/slab.h> >> @@ -24,6 +26,7 @@ >> #include <linux/platform_profile.h> >> #include <linux/hwmon.h> >> #include <linux/acpi.h> >> +#include <linux/bits.h> > > You need to add #include <linux/bitfield.h> as LKP found out. The > MODULE_DESCRIPTION() ones you can ignore as LKP unfortunately spams some > kernel-wide problems to all patches even if they're entirely unrelated > to the patch in question. Actually the LKP / kernel test robot email with the MODULE_DESCRIPTION() warnings does contain useful, new errors. The problem though is that the bot prefixes new (not seen on builds without this patch) messages with '>>' making them show up as quoted (replied-to) text making the actual new errors harder to spot :| The 2 new actual errors in the email with all the MODULE_DESCRIPTION warnings are: ERROR: modpost: "devm_led_classdev_multicolor_unregister" [drivers/platform/x86/hp/hp-wmi.ko] undefined! ERROR: modpost: "devm_led_classdev_multicolor_register_ext" [drivers/platform/x86/hp/hp-wmi.ko] undefined! I agree with all the other review remarks and I'll do my own review soon. Regards, Hans