From 8be050c4011bb03c1156bcec77bc0fa993a895a2 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Mon, 17 Sep 2018 05:23:58 -0700 Subject: [PATCH] hwmon: (nct6775) Use different register to get fan RPM for fan7 [ 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(-) diff --git a/drivers/hwmon/nct6775.c b/drivers/hwmon/nct6775.c index bcbf3114fa84..8859f5572885 100644 --- 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_data *data, u16 reg) 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; }