[PATCH 4.14 149/161] platform/x86: hp-wmi: Make buffer for HPWMI_FEATURE2_QUERY 128 bytes

[Greg Kroah-Hartman]

From: Hans de Goede <hdegoede@xxxxxxxxxx>

commit 133b2acee3871ae6bf123b8fe34be14464aa3d2c upstream.

At least on the HP Envy x360 15-cp0xxx model the WMI interface
for HPWMI_FEATURE2_QUERY requires an outsize of at least 128 bytes,
otherwise it fails with an error code 5 (HPWMI_RET_INVALID_PARAMETERS):

Dec 06 00:59:38 kernel: hp_wmi: query 0xd returned error 0x5

We do not care about the contents of the buffer, we just want to know
if the HPWMI_FEATURE2_QUERY command is supported.

This commits bumps the buffer size, fixing the error.

Fixes: 8a1513b4932 ("hp-wmi: limit hotkey enable")
Cc: stable@xxxxxxxxxxxxxxx
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1520703
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/platform/x86/hp-wmi.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/platform/x86/hp-wmi.c
+++ b/drivers/platform/x86/hp-wmi.c
@@ -313,7 +313,7 @@ static int __init hp_wmi_bios_2008_later
 
 static int __init hp_wmi_bios_2009_later(void)
 {
-	int state = 0;
+	u8 state[128];
 	int ret = hp_wmi_perform_query(HPWMI_FEATURE2_QUERY, HPWMI_READ, &state,
 				       sizeof(state), sizeof(state));
 	if (!ret)