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| author |   Lukas Wunner <lukas@wunner.de> | 2018-07-19 17:27:58 -0500 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2018-07-31 11:09:36 -0500 |
| commit | 82c3fbff6ed3582f2b14b5548fb976c22d7a7255 (patch) | |
| tree | c6aa7cceb79465645953b2b31558513283b04613 /drivers/pci/pci-sysfs.c | |
| parent | PCI: pciehp: Resume parent to D0 on config space access (diff) | |
| download | linux-dev-82c3fbff6ed3582f2b14b5548fb976c22d7a7255.tar.xz linux-dev-82c3fbff6ed3582f2b14b5548fb976c22d7a7255.zip | |
PCI: sysfs: Resume to D0 on function reset
When performing a function reset via sysfs, the device's config space is
accessed in places such as pcie_flr() and its MMIO space is accessed e.g.
in reset_ivb_igd(), so ensure accessibility by resuming the device to D0.
Signed-off-by: Lukas Wunner <lukas@wunner.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Cc: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Ashok Raj <ashok.raj@intel.com>
Cc: Keith Busch <keith.busch@intel.com>
Cc: Yinghai Lu <yinghai@kernel.org>
Diffstat (limited to 'drivers/pci/pci-sysfs.c')
| -rw-r--r-- | drivers/pci/pci-sysfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/pci/pci-sysfs.c b/drivers/pci/pci-sysfs.c index 0c4653c1d2ce..a3df6b57df0f 100644 --- a/drivers/pci/pci-sysfs.c +++ b/drivers/pci/pci-sysfs.c @@ -1449,7 +1449,9 @@ static ssize_t reset_store(struct device *dev, struct device_attribute *attr, if (val != 1) return -EINVAL; + pm_runtime_get_sync(dev); result = pci_reset_function(pdev); + pm_runtime_put(dev); if (result < 0) return result; |