hwmon: (drivetemp) Return -ENODATA for invalid temperatures (ed08ebb7) · Commits · 戴 / test

Holger Hoffstätte observed that Samsung 850 Pro may return invalid temperatures for a short period of time after resume. Return -ENODATA to userspace if this is observed. Fixes: ("hwmon: Driver for disk and solid state drives with temperature sensors") Reported-by:

Holger Hoffstätte <holger@applied-asynchrony.com> Cc: Holger Hoffstätte <holger@applied-asynchrony.com> Signed-off-by:

Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/drivetemp.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -264,12 +264,18 @@ static int drivetemp_get_scttemp(struct drivetemp_data st, u32 attr, long val)
		return err;
		switch (attr) {
		case hwmon_temp_input:
		if (!temp_is_valid(buf[SCT_STATUS_TEMP]))
		return -ENODATA;
		*val = temp_from_sct(buf[SCT_STATUS_TEMP]);
		break;
		case hwmon_temp_lowest:
		if (!temp_is_valid(buf[SCT_STATUS_TEMP_LOWEST]))
		return -ENODATA;
		*val = temp_from_sct(buf[SCT_STATUS_TEMP_LOWEST]);
		break;
		case hwmon_temp_highest:
		if (!temp_is_valid(buf[SCT_STATUS_TEMP_HIGHEST]))
		return -ENODATA;
		*val = temp_from_sct(buf[SCT_STATUS_TEMP_HIGHEST]);
		break;
		default:

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