[PATCH 5.4 43/47] hwmon: (lm90) Do not report busy status bit as alarm

Greg Kroah-Hartman
2021-12-27T15:36:35Z

From: Guenter Roeck <linux@roeck-us.net>

commit cdc5287acad9ede121924a9c9313544b80d15842 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/hwmon/lm90.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -200,6 +200,7 @@ enum chips { lm90, adm1032, lm99, lm86,
#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 */
@@ -819,7 +820,7 @@ static int lm90_update_device(struct 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);