diff options
| author | Jorge Lopez <jorge.lopez2@hp.com> | 2022-10-28 10:55:27 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-11-25 17:40:19 +0100 |
| commit | 2ed6fcc913d7c975f29a43ad896487e1863eb43e (patch) | |
| tree | 258e6a52f93cd27eb4ae5fed85c994e2e4bb116f /drivers/platform | |
| parent | d3b997efb8fa6ac2cc7c57ad781de487b75bdd5f (diff) | |
platform/x86: hp_wmi: Fix rfkill causing soft blocked wifi
commit 1598bfa8e1faa932de42e1ee7628a1c4c4263f0a upstream.
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/platform')
| -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 f911410bb4c7..ba1a3e2fcebe 100644 --- a/drivers/platform/x86/hp-wmi.c +++ b/drivers/platform/x86/hp-wmi.c @@ -894,8 +894,16 @@ 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 = device_create_file(&device->dev, &dev_attr_display); if (err) |