This is a note to let you know that I've just added the patch titled
platform/x86: hp_wmi: Fix rfkill causing soft blocked wifi
to the 4.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
platform-x86-hp_wmi-fix-rfkill-causing-soft-blocked-wifi.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 1598bfa8e1faa932de42e1ee7628a1c4c4263f0a Mon Sep 17 00:00:00 2001
From: Jorge Lopez <jorge.lopez2@xxxxxx>
Date: Fri, 28 Oct 2022 10:55:27 -0500
Subject: platform/x86: hp_wmi: Fix rfkill causing soft blocked wifi
From: Jorge Lopez <jorge.lopez2@xxxxxx>
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@xxxxxx>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=216468
Reviewed-by: Mario Limonciello <mario.limonciello@xxxxxxx>
Link: https://lore.kernel.org/r/20221028155527.7724-1-jorge.lopez2@xxxxxx
Cc: stable@xxxxxxxxxxxxxxx
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/platform/x86/hp-wmi.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- 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(stru
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)
Patches currently in stable-queue which might be from jorge.lopez2@xxxxxx are
queue-4.14/platform-x86-hp_wmi-fix-rfkill-causing-soft-blocked-wifi.patch
