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hwmon: (fam15h_power) Tweak runavg_range on resume 

The quirk introduced with commit
00250ec909 (hwmon: fam15h_power: fix
bogus values with current BIOSes) is not only required during driver
load but also when system resumes from suspend. The BIOS might set the
previously recommended (but unsuitable) initilization value for the
running average range register during resume.

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Tested-by: Andreas Hartmann <andihartmann@01019freenet.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: stable@vger.kernel.org # 3.0+
hifive-unleashed-5.1
Andreas Herrmann 2012-09-23 20:27:32 +02:00 committed by Jean Delvare
parent 641f145600
commit 5f0ecb907d
1 changed files with 13 additions and 2 deletions
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15
drivers/hwmon/fam15h_power.c
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@ -129,12 +129,12 @@ static bool __devinit fam15h_power_is_internal_node0(struct pci_dev *f4)
* counter saturations resulting in bogus power readings.
* We correct this value ourselves to cope with older BIOSes.
*/
static DEFINE_PCI_DEVICE_TABLE(affected_device) = {
static const struct pci_device_id affected_device[] = {
{ PCI_VDEVICE(AMD, PCI_DEVICE_ID_AMD_15H_NB_F4) },
{ 0 }
};
static void __devinit tweak_runavg_range(struct pci_dev *pdev)
static void tweak_runavg_range(struct pci_dev *pdev)
{
u32 val;
@ -158,6 +158,16 @@ static void __devinit tweak_runavg_range(struct pci_dev *pdev)
REG_TDP_RUNNING_AVERAGE, val);
}
#ifdef CONFIG_PM
static int fam15h_power_resume(struct pci_dev *pdev)
{
tweak_runavg_range(pdev);
return 0;
}
#else
#define fam15h_power_resume NULL
#endif
static void __devinit fam15h_power_init_data(struct pci_dev *f4,
struct fam15h_power_data *data)
{
@ -256,6 +266,7 @@ static struct pci_driver fam15h_power_driver = {
.id_table = fam15h_power_id_table,
.probe = fam15h_power_probe,
.remove = __devexit_p(fam15h_power_remove),
.resume = fam15h_power_resume,
};
module_pci_driver(fam15h_power_driver);