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| author | Jorge Lopez <jorge.lopez2@hp.com> | 2022-10-28 17:55:27 +0200 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-11-07 12:33:49 +0100 |
| commit | 1598bfa8e1faa932de42e1ee7628a1c4c4263f0a (patch) | |
| tree | ce013a8b23a5da1d514d6317cdc308b204a5a356 /drivers/platform/x86/hp-wmi.c | |
| parent | platform/x86: touchscreen_dmi: Add info for the RCA Cambio W101 v2 2-in-1 (diff) | |
| download | linux-1598bfa8e1faa932de42e1ee7628a1c4c4263f0a.tar.xz linux-1598bfa8e1faa932de42e1ee7628a1c4c4263f0a.zip | |
platform/x86: hp_wmi: Fix rfkill causing soft blocked wifi
After upgrading BIOS to U82 01.02.01 Rev.A, the console is flooded
strange char "^@" which printed out every second and makes login
nearly impossible. Also the below messages were shown both in console
and journal/dmesg every second:
usb 1-3: Device not responding to setup address.
usb 1-3: device not accepting address 4, error -71
usb 1-3: device descriptor read/all, error -71
usb usb1-port3: unable to enumerate USB device
Wifi is soft blocked by checking rfkill. When unblocked manually,
after few seconds it would be soft blocked again. So I was suspecting
something triggered rfkill to soft block wifi. At the end it was
fixed by removing hp_wmi module.
The root cause is the way hp-wmi driver handles command 1B on
post-2009 BIOS. In pre-2009 BIOS, command 1Bh return 0x4 to indicate
that BIOS no longer controls the power for the wireless devices.
Signed-off-by: Jorge Lopez <jorge.lopez2@hp.com>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216468
Reviewed-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20221028155527.7724-1-jorge.lopez2@hp.com
Cc: stable@vger.kernel.org
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | drivers/platform/x86/hp-wmi.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c index 627a6d0eaf83..12449038bed1 100644 --- a/drivers/platform/x86/hp-wmi.c +++ b/drivers/platform/x86/hp-wmi.c @@ -1300,8 +1300,16 @@ static int __init hp_wmi_bios_setup(struct platform_device *device) wwan_rfkill = NULL; rfkill2_count = 0; - if (hp_wmi_rfkill_setup(device)) - hp_wmi_rfkill2_setup(device); + /* + * In pre-2009 BIOS, command 1Bh return 0x4 to indicate that + * BIOS no longer controls the power for the wireless + * devices. All features supported by this command will no + * longer be supported. + */ + if (!hp_wmi_bios_2009_later()) { + if (hp_wmi_rfkill_setup(device)) + hp_wmi_rfkill2_setup(device); + } err = hp_wmi_hwmon_init(); |