On Thu, May 02, 2024 at 12:02:47PM +0800, Weifeng Liu wrote: > Emits messages upon errors during probing of SAM. Hopefully this could > provide useful context to user for the purpose of diagnosis when > something miserable happen. ... > - if (gpiod_count(&serdev->dev, NULL) < 0) > + if (gpiod_count(&serdev->dev, NULL) < 0) { > + dev_err(&serdev->dev, "no GPIO found\n"); > return -ENODEV; Why not return dev_err_probe(...); ? Also while at it, unshadow the error code status = gpiod_count(&serdev->dev, NULL); if (status < 0) return dev_err_probe(..., status, ...); > + } ... > astatus = ssam_serdev_setup_via_acpi(ssh->handle, serdev); > if (ACPI_FAILURE(astatus)) { > status = -ENXIO; > + dev_err(&serdev->dev, "failed to setup serdev\n"); In the similar way status = dev_err(&serdev->dev, -ENXIO, "failed to setup serdev\n"); > goto err_devinit; > } ... > status = ssam_log_firmware_version(ctrl); > - if (status) > + if (status) { > + dev_err(&serdev->dev, "failed to get firmware version\n"); > goto err_initrq; Use dev_err_probe() everywhere for the sake of uniform output format. > + } ... > status = ssam_ctrl_notif_d0_entry(ctrl); > - if (status) > + if (status) { > + dev_err(&serdev->dev, "failed to notify EC of entry of D0\n"); > goto err_initrq; Ditto. > + } > > status = ssam_ctrl_notif_display_on(ctrl); > - if (status) > + if (status) { > + dev_err(&serdev->dev, "failed to notify EC of display on\n"); > goto err_initrq; Ditto. > + } -- With Best Regards, Andy Shevchenko