linux-kernel - [ 02/65] asus-wmi: use ASUS_WMI_METHODID

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Date:	Mon, 13 Aug 2012 15:13:46 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Alex Hung <alex.hung@...onical.com>,
	Matthew Garrett <mjg@...hat.com>
Subject: [ 02/65] asus-wmi: use ASUS_WMI_METHODID_DSTS2 as default DSTS ID.

From: Greg KH <gregkh@...uxfoundation.org>

3.4-stable review patch.  If anyone has any objections, please let me know.

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

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

commit 63a78bb1051b240417daad3a3fa9c1bb10646dca upstream.

According to responses from the BIOS team, ASUS_WMI_METHODID_DSTS2
(0x53545344) will be used as future DSTS ID. In addition, calling
asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL) returns
ASUS_WMI_UNSUPPORTED_METHOD in new ASUS laptop PCs. This patch fixes
no DSTS ID will be assigned in this case.

Signed-off-by: Alex Hung <alex.hung@...onical.com>
Signed-off-by: Matthew Garrett <mjg@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/platform/x86/asus-wmi.c |    7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -1467,14 +1467,9 @@ static int asus_wmi_platform_init(struct
 	 */
 	if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS, 0, 0, NULL))
 		asus->dsts_id = ASUS_WMI_METHODID_DSTS;
-	else if (!asus_wmi_evaluate_method(ASUS_WMI_METHODID_DSTS2, 0, 0, NULL))
+	else
 		asus->dsts_id = ASUS_WMI_METHODID_DSTS2;
 
-	if (!asus->dsts_id) {
-		pr_err("Can't find DSTS");
-		return -ENODEV;
-	}
-
 	/* CWAP allow to define the behavior of the Fn+F2 key,
 	 * this method doesn't seems to be present on Eee PCs */
 	if (asus->driver->quirks->wapf >= 0)


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