Re: [PATCH] hp-wmi: fix wifi cannot be hard-unblock

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On 13.06.2016 14:44, Alex Hung wrote:
Several users reported wifi cannot be unblocked as discussed in [1].
This patch removes the useof 2009 flag by BIOS but uses the actual WMI
function calls - it will be skipped if WMI reports unsupported

[1] https://bugzilla.kernel.org/show_bug.cgi?id=69131

Signed-off-by: Alex Hung <alex.hung@xxxxxxxxxxxxx>
---
  drivers/platform/x86/hp-wmi.c | 7 ++++++-
  1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/platform/x86/hp-wmi.c b/drivers/platform/x86/hp-wmi.c
index 6f145f2..96ffda4 100644
--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -718,6 +718,11 @@ static int __init hp_wmi_rfkill_setup(struct platform_device *device)
  	if (err)
  		return err;

+	err = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, 1, &wireless,
+				   sizeof(wireless), 0);
+	if (err)
+		return err;
+
  	if (wireless & 0x1) {
  		wifi_rfkill = rfkill_alloc("hp-wifi", &device->dev,
  					   RFKILL_TYPE_WLAN,
@@ -882,7 +887,7 @@ static int __init hp_wmi_bios_setup(struct platform_device *device)
  	wwan_rfkill = NULL;
  	rfkill2_count = 0;

-	if (hp_wmi_bios_2009_later() || hp_wmi_rfkill_setup(device))
+	if (hp_wmi_rfkill_setup(device))
  		hp_wmi_rfkill2_setup(device);

  	err = device_create_file(&device->dev, &dev_attr_display);


I checked this patch with kernels 4.1.19 - 4.1.25 on HP EliteBook 6930p where the problem was spotted earlier. The patch does fix the problem for me.

Tested-by: Evgenii Shatokhin <eugene.shatokhin@xxxxxxxxx>

Regards,
Evgenii

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