On 31/10/2024 14:58, shunxi zhang wrote: > From: Shunxi Zhang <ot_shunxi.zhang@xxxxxxxxxxxx> > > Signed-off-by: Shunxi Zhang <ot_shunxi.zhang@xxxxxxxxxxxx> ... > + > +static const struct mtk_rtc_data mt6685_rtc_data = { > + .wrtgr = RTC_WRTGR, > + .hwid = HWID_MT6685, > + .chip_version = MT6685_SERIES, > + .spare_reg_fields = mt6685_spare_reg_fields, > + .cali_reg_fields = mt6685_cali_reg_fields, > + .single_read_write_is_supported = true, > +}; > + > +static const struct of_device_id mt6685_rtc_of_match[] = { > + { .compatible = "mediatek,mt6685-rtc", .data = &mt6685_rtc_data }, Please run scripts/checkpatch.pl and fix reported warnings. Then please run `scripts/checkpatch.pl --strict` and (probably) fix more warnings. Some warnings can be ignored, especially from --strict run, but the code here looks like it needs a fix. Feel free to get in touch if the warning is not clear. You did not even run basic tools... I doubt that this was ever built with W=1 and static checkers. But above warning about undocumented ABI is a NAK. Please run standard kernel tools for static analysis, like coccinelle, smatch and sparse, and fix reported warnings. Also please check for warnings when building with W=1. Most of these commands (checks or W=1 build) can build specific targets, like some directory, to narrow the scope to only your code. The code here looks like it needs a fix. Feel free to get in touch if the warning is not clear. Best regards, Krzysztof