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| author | Babu Moger <Babu.Moger@amd.com> | 2023-04-14 00:39:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-11 17:03:00 +0300 |
| commit | d899ae3e768ebf4815627a76df9ff5cb4301db36 (patch) | |
| tree | 2f599b84f551f7c3ee7f63047230d114fe008372 | |
| parent | 986bd947bcd1f5bace488a739218bfc3ca407de8 (diff) | |
| download | linux-d899ae3e768ebf4815627a76df9ff5cb4301db36.tar.xz | |
hwmon: (k10temp) Check range scale when CUR_TEMP register is read-write
commit 0c072385348e3ac5229145644055d3e2afb5b3db upstream.
Spec says, when CUR_TEMP_TJ_SEL == 3 and CUR_TEMP_RANGE_SEL == 0,
it should use RangeUnadjusted is 0, which is (CurTmp*0.125 -49) C. The
CUR_TEMP register is read-write when CUR_TEMP_TJ_SEL == 3 (bit 17-16).
Add the check to detect it.
Sensors command's output before the patch.
$sensors
k10temp-pci-00c3
Adapter: PCI adapter
Tctl: +76.6°C <- Wrong value
Tccd1: +26.5°C
Tccd2: +27.5°C
Tccd3: +27.2°C
Tccd4: +27.5°C
Tccd5: +26.0°C
Tccd6: +26.2°C
Tccd7: +25.0°C
Tccd8: +26.5°C
Sensors command's output after the patch.
$sensors
k10temp-pci-00c3
Adapter: PCI adapter
Tctl: +28.8°C <- corrected value
Tccd1: +27.5°C
Tccd2: +28.5°C
Tccd3: +28.5°C
Tccd4: +28.5°C
Tccd5: +27.0°C
Tccd6: +27.5°C
Tccd7: +27.0°C
Tccd8: +27.5°C
Signed-off-by: Babu Moger <babu.moger@amd.com>
Fixes: 1b59788979ac ("hwmon: (k10temp) Add temperature offset for Ryzen 2700X")
Link: https://lore.kernel.org/r/20230413213958.847634-1-babu.moger@amd.com
Cc: stable@vger.kernel.org
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/hwmon/k10temp.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/hwmon/k10temp.c b/drivers/hwmon/k10temp.c index 5a9d47a229e4..be8bbb1c3a02 100644 --- a/drivers/hwmon/k10temp.c +++ b/drivers/hwmon/k10temp.c @@ -75,6 +75,7 @@ static DEFINE_MUTEX(nb_smu_ind_mutex); #define ZEN_CUR_TEMP_SHIFT 21 #define ZEN_CUR_TEMP_RANGE_SEL_MASK BIT(19) +#define ZEN_CUR_TEMP_TJ_SEL_MASK GENMASK(17, 16) struct k10temp_data { struct pci_dev *pdev; @@ -155,7 +156,8 @@ static long get_raw_temp(struct k10temp_data *data) data->read_tempreg(data->pdev, ®val); temp = (regval >> ZEN_CUR_TEMP_SHIFT) * 125; - if (regval & data->temp_adjust_mask) + if ((regval & data->temp_adjust_mask) || + (regval & ZEN_CUR_TEMP_TJ_SEL_MASK) == ZEN_CUR_TEMP_TJ_SEL_MASK) temp -= 49000; return temp; } |