commit: fc0900cbda9243957d812cd6b4cc87965f9fe75f
From: Andreas Herrmann <[email protected]>
Date: Fri, 23 Mar 2012 10:02:17 +0100
Subject: 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 <[email protected]>
Signed-off-by: Andreas Herrmann <[email protected]>
Acked-by: Guenter Roeck <[email protected]>
Signed-off-by: Jean Delvare <[email protected]>
Cc: [email protected]
---
 drivers/hwmon/fam15h_power.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/hwmon/fam15h_power.c b/drivers/hwmon/fam15h_power.c
index 523f8fb..930370d 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),
-- 
1.7.3.4
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