Messages in this thread Patch in this message | | | From | "Rafael J. Wysocki" <> | Subject | [PATCH v2 1/5] ACPI: scan: Fix device check notification handling | Date | Mon, 26 Feb 2024 17:35:27 +0100 |
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From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
It is generally invalid to fail a Device Check notification if the scan handler has not been attached to the given device after a bus rescan, because there may be valid reasons for the scan handler to refuse attaching to the device (for example, the device is not ready).
For this reason, modify acpi_scan_device_check() to return 0 in that case without printing a warning.
While at it, reduce the log level of the "already enumerated" message in the same function, because it is only interesting when debugging notification handling
Fixes: 443fc8202272 ("ACPI / hotplug: Rework generic code to handle suprise removals") Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> ---
v1 -> v2: Add R-by from Jonathan.
--- drivers/acpi/scan.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
Index: linux-pm/drivers/acpi/scan.c =================================================================== --- linux-pm.orig/drivers/acpi/scan.c +++ linux-pm/drivers/acpi/scan.c @@ -314,18 +314,14 @@ static int acpi_scan_device_check(struct * again). */ if (adev->handler) { - dev_warn(&adev->dev, "Already enumerated\n"); - return -EALREADY; + dev_dbg(&adev->dev, "Already enumerated\n"); + return 0; } error = acpi_bus_scan(adev->handle); if (error) { dev_warn(&adev->dev, "Namespace scan failure\n"); return error; } - if (!adev->handler) { - dev_warn(&adev->dev, "Enumeration failure\n"); - error = -ENODEV; - } } else { error = acpi_scan_device_not_enumerated(adev); }
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