From cdc5287acad9ede121924a9c9313544b80d15842 Mon Sep 17 00:00:00 2001
From: Guenter Roeck <linux@roeck-us.net>
Date: Fri, 3 Dec 2021 13:42:22 -0800
Subject: [PATCH] hwmon: (lm90) Do not report 'busy' status bit as alarm
Git-commit: cdc5287acad9ede121924a9c9313544b80d15842
Patch-mainline: v5.16-rc7
References: git-fixes
Bit 7 of the status register indicates that the chip is busy
doing a conversion. It does not indicate an alarm status.
Stop reporting it as alarm status bit.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/hwmon/lm90.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index dd8612a9d536..74019dff2550 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -200,6 +200,7 @@ enum chips { lm90, adm1032, lm99, lm86, max6657, max6659, adt7461, max6680,
#define LM90_STATUS_RHIGH (1 << 4) /* remote high temp limit tripped */
#define LM90_STATUS_LLOW (1 << 5) /* local low temp limit tripped */
#define LM90_STATUS_LHIGH (1 << 6) /* local high temp limit tripped */
+#define LM90_STATUS_BUSY (1 << 7) /* conversion is ongoing */
#define MAX6696_STATUS2_R2THRM (1 << 1) /* remote2 THERM limit tripped */
#define MAX6696_STATUS2_R2OPEN (1 << 2) /* remote2 is an open circuit */
@@ -820,7 +821,7 @@ static int lm90_update_device(struct device *dev)
val = lm90_read_reg(client, LM90_REG_R_STATUS);
if (val < 0)
return val;
- data->alarms = val; /* lower 8 bit of alarms */
+ data->alarms = val & ~LM90_STATUS_BUSY;
if (data->kind == max6696) {
val = lm90_select_remote_channel(data, 1);
--
2.31.1