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path: root/drivers/pci/pci.c
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Diffstat (limited to 'drivers/pci/pci.c')
-rw-r--r--drivers/pci/pci.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 11f24912523c..fd958c8ebd83 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3316,8 +3316,27 @@ static void pci_dev_unlock(struct pci_dev *dev)
pci_cfg_access_unlock(dev);
}
+/**
+ * pci_reset_notify - notify device driver of reset
+ * @dev: device to be notified of reset
+ * @prepare: 'true' if device is about to be reset; 'false' if reset attempt
+ * completed
+ *
+ * Must be called prior to device access being disabled and after device
+ * access is restored.
+ */
+static void pci_reset_notify(struct pci_dev *dev, bool prepare)
+{
+ const struct pci_error_handlers *err_handler =
+ dev->driver ? dev->driver->err_handler : NULL;
+ if (err_handler && err_handler->reset_notify)
+ err_handler->reset_notify(dev, prepare);
+}
+
static void pci_dev_save_and_disable(struct pci_dev *dev)
{
+ pci_reset_notify(dev, true);
+
/*
* Wake-up device prior to save. PM registers default to D0 after
* reset and a simple register restore doesn't reliably return
@@ -3339,6 +3358,7 @@ static void pci_dev_save_and_disable(struct pci_dev *dev)
static void pci_dev_restore(struct pci_dev *dev)
{
pci_restore_state(dev);
+ pci_reset_notify(dev, false);
}
static int pci_dev_reset(struct pci_dev *dev, int probe)
@@ -3355,6 +3375,7 @@ static int pci_dev_reset(struct pci_dev *dev, int probe)
return rc;
}
+
/**
* __pci_reset_function - reset a PCI device function
* @dev: PCI device to reset