From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.kernel.org ([198.145.29.99]:49708 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727007AbeJQBGD (ORCPT ); Tue, 16 Oct 2018 21:06:03 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Robert Kern , Guenter Roeck , Sasha Levin Subject: [PATCH 4.18 096/135] hwmon: (nct6775) Use different register to get fan RPM for fan7 Date: Tue, 16 Oct 2018 19:05:26 +0200 Message-Id: <20181016170521.971892527@linuxfoundation.org> In-Reply-To: <20181016170515.447235311@linuxfoundation.org> References: <20181016170515.447235311@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 4.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guenter Roeck [ Upstream commit 55066354285b36ee09dc50e2527f43a97c567177 ] The documented register to retrieve the fan RPM for fan7 is found to be unreliable at least with NCT6796D revision 3. Let's use register 0x4ce instead. This is undocumented for NCT6796D, but documented for NCT6797D and NCT6798D and known to be working. Reported-by: Robert Kern Cc: Robert Kern Fixes: 81820059a428 ("hwmon: (nct6775) Add support for NCT6796D") Signed-off-by: Guenter Roeck Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- drivers/hwmon/nct6775.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/hwmon/nct6775.c +++ b/drivers/hwmon/nct6775.c @@ -502,7 +502,7 @@ static const s8 NCT6779_BEEP_BITS[] = { 30, 31 }; /* intrusion0, intrusion1 */ static const u16 NCT6779_REG_FAN[] = { - 0x4c0, 0x4c2, 0x4c4, 0x4c6, 0x4c8, 0x4ca, 0x660 }; + 0x4c0, 0x4c2, 0x4c4, 0x4c6, 0x4c8, 0x4ca, 0x4ce }; static const u16 NCT6779_REG_FAN_PULSES[NUM_FAN] = { 0x644, 0x645, 0x646, 0x647, 0x648, 0x649 }; @@ -1293,7 +1293,7 @@ static bool is_word_sized(struct nct6775 reg == 0x402 || reg == 0x63a || reg == 0x63c || reg == 0x63e || reg == 0x640 || reg == 0x642 || reg == 0x64a || - reg == 0x64c || reg == 0x660 || + reg == 0x64c || reg == 0x73 || reg == 0x75 || reg == 0x77 || reg == 0x79 || reg == 0x7b || reg == 0x7d; }