[PATCH v1 2/7] hwmon: (it87) Disable configuration exit for certain chips

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IT8790E and IT8792E/IT8795E have been identified as chips that can have
issues when disabling configuration mode.

Set to never exit configuration mode.

Signed-off-by: Frank Crawford <frank@xxxxxxxxxxxxxxxxxx>
---
 drivers/hwmon/it87.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/hwmon/it87.c b/drivers/hwmon/it87.c
index 7049e81f5af1..c5e46b94f0b8 100644
--- a/drivers/hwmon/it87.c
+++ b/drivers/hwmon/it87.c
@@ -2453,6 +2453,13 @@ static int __init it87_find(int sioaddr, unsigned short *address,
 		break;
 	case IT8792E_DEVID:
 		sio_data->type = it8792;
+		/*
+		 * Disabling configuration mode on IT8792E can result in system
+		 * hang-ups and access failures to the Super-IO chip at the
+		 * second SIO address. Never exit configuration mode on this
+		 * chip to avoid the problem.
+		 */
+		doexit = false;
 		break;
 	case IT8771E_DEVID:
 		sio_data->type = it8771;
@@ -2474,6 +2481,7 @@ static int __init it87_find(int sioaddr, unsigned short *address,
 		break;
 	case IT8790E_DEVID:
 		sio_data->type = it8790;
+		doexit = false;	/* See IT8792E comment above */
 		break;
 	case IT8603E_DEVID:
 	case IT8623E_DEVID:
-- 
2.39.1




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