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authorAndreas Herrmann <andreas.herrmann3@amd.com>2012-03-23 10:02:17 +0100
committerJean Delvare <khali@endymion.delvare>2012-03-23 10:02:17 +0100
commitfc0900cbda9243957d812cd6b4cc87965f9fe75f (patch)
tree3e0a3593a4d57704ae61380fec3667397b2429a6 /drivers/hwmon/fam15h_power.c
parent437538267b672f9320833907f1b5acbb2605f4be (diff)
hwmon: (fam15h_power) Correct sign extension of running_avg_capture
Wrong bit was used for sign extension which caused wrong end results. Thanks to Andre for spotting this bug. Reported-by: Andre Przywara <andre.przywara@amd.com> Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com> Acked-by: Guenter Roeck <guenter.roeck@ericsson.com> Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/hwmon/fam15h_power.c')
-rw-r--r--drivers/hwmon/fam15h_power.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c
index 523f8fb9e7d..930370de520 100644
--- a/drivers/hwmon/fam15h_power.c
+++ b/drivers/hwmon/fam15h_power.c
@@ -60,7 +60,7 @@ static ssize_t show_power(struct device *dev,
pci_bus_read_config_dword(f4->bus, PCI_DEVFN(PCI_SLOT(f4->devfn), 5),
REG_TDP_RUNNING_AVERAGE, &val);
running_avg_capture = (val >> 4) & 0x3fffff;
- running_avg_capture = sign_extend32(running_avg_capture, 22);
+ running_avg_capture = sign_extend32(running_avg_capture, 21);
running_avg_range = val & 0xf;
pci_bus_read_config_dword(f4->bus, PCI_DEVFN(PCI_SLOT(f4->devfn), 5),