diff options
| author | Yicong Yang <yangyicong@hisilicon.com> | 2020-03-13 17:53:47 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-17 10:48:46 +0200 |
| commit | a73afecb4178283b7a0c104adb8297322da63cd6 (patch) | |
| tree | b8c77cef5fd0ae49cdae2691f5ca033f8af4edda /include/linux/tracehook.h | |
| parent | 1ada617e3627ddc734b3bda5576552c815d9014f (diff) | |
PCI/ASPM: Clear the correct bits when enabling L1 substates
commit 58a3862a10a317a81097ab0c78aecebabb1704f5 upstream.
In pcie_config_aspm_l1ss(), we cleared the wrong bits when enabling ASPM L1
Substates. Instead of the L1.x enable bits (PCI_L1SS_CTL1_L1SS_MASK, 0xf), we
cleared the Link Activation Interrupt Enable bit (PCI_L1SS_CAP_L1_PM_SS,
0x10).
Clear the L1.x enable bits before writing the new L1.x configuration.
[bhelgaas: changelog]
Fixes: aeda9adebab8 ("PCI/ASPM: Configure L1 substate settings")
Link: https://lore.kernel.org/r/1584093227-1292-1-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org # v4.11+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/linux/tracehook.h')
0 files changed, 0 insertions, 0 deletions