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@@ -1540,16 +1540,21 @@ void pci_release_region(struct pci_dev *pdev, int bar)
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}
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/**
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- * pci_request_region - Reserved PCI I/O and memory resource
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+ * __pci_request_region - Reserved PCI I/O and memory resource
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* @pdev: PCI device whose resources are to be reserved
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* @bar: BAR to be reserved
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* @res_name: Name to be associated with resource.
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+ * @exclusive: whether the region access is exclusive or not
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*
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* Mark the PCI region associated with PCI device @pdev BR @bar as
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* being reserved by owner @res_name. Do not access any
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* address inside the PCI regions unless this call returns
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* successfully.
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*
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+ * If @exclusive is set, then the region is marked so that userspace
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+ * is explicitly not allowed to map the resource via /dev/mem or
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+ * sysfs MMIO access.
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+ *
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* Returns 0 on success, or %EBUSY on error. A warning
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* message is also printed on failure.
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*/
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@@ -1588,12 +1593,12 @@ err_out:
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}
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/**
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- * pci_request_region - Reserved PCI I/O and memory resource
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+ * pci_request_region - Reserve PCI I/O and memory resource
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* @pdev: PCI device whose resources are to be reserved
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* @bar: BAR to be reserved
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- * @res_name: Name to be associated with resource.
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+ * @res_name: Name to be associated with resource
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*
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- * Mark the PCI region associated with PCI device @pdev BR @bar as
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+ * Mark the PCI region associated with PCI device @pdev BAR @bar as
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* being reserved by owner @res_name. Do not access any
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* address inside the PCI regions unless this call returns
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* successfully.
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