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| author | Lukas Wunner <lukas@wunner.de> | 2016-10-23 11:55:34 (GMT) |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2016-11-07 12:06:59 (GMT) |
| commit | e8a6123e9ead1b0d40349809e51de9341312fe08 (patch) | |
| tree | e47e737f5f2ade2f28c28db1a93bc90c47949cd2 /arch/x86/include/asm | |
| parent | bc33b0ca11e3df467777a4fa7639ba488c9d4911 (diff) | |
| download | linux-e8a6123e9ead1b0d40349809e51de9341312fe08.tar.xz | |
x86/platform/intel-mid: Retrofit pci_platform_pm_ops ->get_state hook
Commit cc7cc02bada8 ("PCI: Query platform firmware for device power
state") augmented struct pci_platform_pm_ops with a ->get_state hook and
implemented it for acpi_pci_platform_pm, the only pci_platform_pm_ops
existing till v4.7.
However v4.8 introduced another pci_platform_pm_ops for Intel Mobile
Internet Devices with commit 5823d0893ec2 ("x86/platform/intel-mid: Add
Power Management Unit driver"). It is missing the ->get_state hook,
which is fatal since pci_set_platform_pm() enforces its presence. Andy
Shevchenko reports that without the present commit, such a device
"crashes without even a character printed out on serial console and
reboots (since watchdog)".
Retrofit mid_pci_platform_pm with the missing callback to fix the
breakage.
Acked-and-tested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Fixes: cc7cc02bada8 ("PCI: Query platform firmware for device power state")
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: linux-pci@vger.kernel.org
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: http://lkml.kernel.org/r/7c1567d4c49303a4aada94ba16275cbf56b8976b.1477221514.git.lukas@wunner.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/intel-mid.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/intel-mid.h b/arch/x86/include/asm/intel-mid.h index 5b6753d..49da9f4 100644 --- a/arch/x86/include/asm/intel-mid.h +++ b/arch/x86/include/asm/intel-mid.h @@ -17,6 +17,7 @@ extern int intel_mid_pci_init(void); extern int intel_mid_pci_set_power_state(struct pci_dev *pdev, pci_power_t state); +extern pci_power_t intel_mid_pci_get_power_state(struct pci_dev *pdev); extern void intel_mid_pwr_power_off(void); |