| Message ID | 4319486.LvFx2qVVIh@kreacher |
|---|---|
| State | New |
| Headers | show |
| Series | PCI: ACPI: PM: Fix debug message in acpi_pci_set_power_state() | expand |
Hi, [...] > To address this issue, modify the debug message in question to print > the current power state of the target PCI device's ACPI companion > instead of printing the target power state which may not reflect > the real final power state of the device. [...] Thank you! Reviewed-by: Krzysztof Wilczyński <kw@linux.com> Krzysztof
On Thu, Mar 25, 2021 at 07:57:51PM +0100, Rafael J. Wysocki wrote: > From: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > If PCI_D3cold is passed to acpi_pci_set_power_state() as the second > argument and there is no ACPI D3cold support for the given device, > the debug message printed by that function will state that the > device power state has been changed to D3cold, while in fact it > will be D3hot, because acpi_device_set_power() falls back to D3hot > automatically if D3cold is not supported without returning an error. > > To address this issue, modify the debug message in question to print > the current power state of the target PCI device's ACPI companion > instead of printing the target power state which may not reflect > the real final power state of the device. > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Applied with Krzysztof's reviewed-by to pci/pm for v5.13, thanks! Let me know if you have nearby or related changes that you'd rather take via your tree. > --- > drivers/pci/pci-acpi.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > Index: linux-pm/drivers/pci/pci-acpi.c > =================================================================== > --- linux-pm.orig/drivers/pci/pci-acpi.c > +++ linux-pm/drivers/pci/pci-acpi.c > @@ -1021,7 +1021,7 @@ static int acpi_pci_set_power_state(stru > > if (!error) > pci_dbg(dev, "power state changed by ACPI to %s\n", > - acpi_power_state_string(state_conv[state])); > + acpi_power_state_string(adev->power.state)); > > return error; > } > > >
On Wed, Mar 31, 2021 at 11:09 PM Bjorn Helgaas <helgaas@kernel.org> wrote: > > On Thu, Mar 25, 2021 at 07:57:51PM +0100, Rafael J. Wysocki wrote: > > From: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > > > If PCI_D3cold is passed to acpi_pci_set_power_state() as the second > > argument and there is no ACPI D3cold support for the given device, > > the debug message printed by that function will state that the > > device power state has been changed to D3cold, while in fact it > > will be D3hot, because acpi_device_set_power() falls back to D3hot > > automatically if D3cold is not supported without returning an error. > > > > To address this issue, modify the debug message in question to print > > the current power state of the target PCI device's ACPI companion > > instead of printing the target power state which may not reflect > > the real final power state of the device. > > > > Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> > > Applied with Krzysztof's reviewed-by to pci/pm for v5.13, thanks! > > Let me know if you have nearby or related changes that you'd rather > take via your tree. I don't have any, thank you!
Index: linux-pm/drivers/pci/pci-acpi.c =================================================================== --- linux-pm.orig/drivers/pci/pci-acpi.c +++ linux-pm/drivers/pci/pci-acpi.c @@ -1021,7 +1021,7 @@ static int acpi_pci_set_power_state(stru if (!error) pci_dbg(dev, "power state changed by ACPI to %s\n", - acpi_power_state_string(state_conv[state])); + acpi_power_state_string(adev->power.state)); return error; }