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. Cc: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> Cc: Mika Westerberg <mika.westerberg@xxxxxxxxxxxxxxx> Cc: Ashok Raj <ashok.raj@xxxxxxxxx> Cc: Keith Busch <keith.busch@xxxxxxxxx> Cc: Yinghai Lu <yinghai@xxxxxxxxxx> Signed-off-by: Lukas Wunner <lukas@xxxxxxxxx> --- drivers/pci/pci-sysfs.c | 2 ++ 1 file changed, 2 insertions(+) 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; -- 2.17.1
