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Subject[PATCH 3.16 025/346] hp-wmi: Fix wifi cannot be hard-unblocked
3.16.39-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Alex Hung <alex.hung@canonical.com>

commit fc8a601e1175ae351f662506030f9939cb7fdbfe upstream.

Several users reported wifi cannot be unblocked as discussed in [1].
This patch removes the use of the 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@canonical.com>
Tested-by: Evgenii Shatokhin <eugene.shatokhin@yandex.ru>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
drivers/platform/x86/hp-wmi.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)

--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -723,6 +723,11 @@ static int __init hp_wmi_rfkill_setup(st
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,
@@ -910,7 +915,7 @@ static int __init hp_wmi_bios_setup(stru
gps_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);
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