PCI: Tidy comments

Remove pointless comments that tell us the file name, remove blank line
comments, follow multi-line comment conventions.  No functional change
intended.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

drivers/pci/access.c

@@ -17,9 +17,9 @@
 DEFINE_RAW_SPINLOCK(pci_lock);
 
 /*
- *  Wrappers for all PCI configuration access functions.  They just check
- *  alignment, do locking and call the low-level functions pointed to
- *  by pci_dev->ops.
+ * Wrappers for all PCI configuration access functions.  They just check
+ * alignment, do locking and call the low-level functions pointed to
+ * by pci_dev->ops.
  */
 
 #define PCI_byte_BAD 0
@@ -686,8 +686,10 @@ void pci_cfg_access_unlock(struct pci_dev *dev)
 
 	raw_spin_lock_irqsave(&pci_lock, flags);
 
-	/* This indicates a problem in the caller, but we don't need
-	 * to kill them, unlike a double-block above. */
+	/*
+	 * This indicates a problem in the caller, but we don't need
+	 * to kill them, unlike a double-block above.
+	 */
 	WARN_ON(!dev->block_cfg_access);
 
 	dev->block_cfg_access = 0;

drivers/pci/ats.c

@@ -1,14 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * drivers/pci/ats.c
- *
- * Copyright (C) 2009 Intel Corporation, Yu Zhao <yu.zhao@intel.com>
- * Copyright (C) 2011 Advanced Micro Devices,
- *
- * PCI Express I/O Virtualization (IOV) support.
+ * PCI Express I/O Virtualization (IOV) support
  *   Address Translation Service 1.0
  *   Page Request Interface added by Joerg Roedel <joerg.roedel@amd.com>
  *   PASID support added by Joerg Roedel <joerg.roedel@amd.com>
+ *
+ * Copyright (C) 2009 Intel Corporation, Yu Zhao <yu.zhao@intel.com>
+ * Copyright (C) 2011 Advanced Micro Devices,
  */
 
 #include <linux/export.h>

drivers/pci/bus.c

@@ -1,7 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- *	drivers/pci/bus.c
- *
  * From setup-res.c, by:
  *	Dave Rusling (david.rusling@reo.mts.dec.com)
  *	David Mosberger (davidm@cs.arizona.edu)

drivers/pci/host-bridge.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * host bridge related code
+ * Host bridge related code
  */
 
 #include <linux/kernel.h>

drivers/pci/iov.c

@@ -1,12 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * drivers/pci/iov.c
- *
- * Copyright (C) 2009 Intel Corporation, Yu Zhao <yu.zhao@intel.com>
- *
- * PCI Express I/O Virtualization (IOV) support.
+ * PCI Express I/O Virtualization (IOV) support
  *   Single Root IOV 1.0
  *   Address Translation Service 1.0
+ *
+ * Copyright (C) 2009 Intel Corporation, Yu Zhao <yu.zhao@intel.com>
  */
 
 #include <linux/pci.h>

drivers/pci/mmap.c

@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * mmap.c — generic PCI resource mmap helper
+ * Generic PCI resource mmap helper
  *
  * Copyright © 2017 Amazon.com, Inc. or its affiliates.
  *

drivers/pci/msi.c

@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * File:	msi.c
- * Purpose:	PCI Message Signaled Interrupt (MSI)
+ * PCI Message Signaled Interrupt (MSI)
  *
  * Copyright (C) 2003-2004 Intel
  * Copyright (C) Tom Long Nguyen (tom.l.nguyen@intel.com)

drivers/pci/pci-acpi.c

@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * File:	pci-acpi.c
- * Purpose:	Provide PCI support in ACPI
+ * PCI support in ACPI
  *
  * Copyright (C) 2005 David Shaohua Li <shaohua.li@intel.com>
  * Copyright (C) 2004 Tom Long Nguyen <tom.l.nguyen@intel.com>

drivers/pci/pci-driver.c

@@ -1,7 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * drivers/pci/pci-driver.c
- *
  * (C) Copyright 2002-2004, 2007 Greg Kroah-Hartman <greg@kroah.com>
  * (C) Copyright 2007 Novell Inc.
  */

drivers/pci/pci-label.c

@@ -1,7 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Purpose: Export the firmware instance and label associated with
- * a pci device to sysfs
+ * Export the firmware instance and label associated with a PCI device to
+ * sysfs
+ *
  * Copyright (C) 2010 Dell Inc.
  * by Narendra K <Narendra_K@dell.com>,
  * Jordan Hargrave <Jordan_Hargrave@dell.com>

drivers/pci/pci-stub.c

@@ -1,5 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
-/* pci-stub - simple stub driver to reserve a pci device
+/*
+ * Simple stub driver to reserve a PCI device
  *
  * Copyright (C) 2008 Red Hat, Inc.
  * Author:

drivers/pci/pci-sysfs.c

@@ -1,7 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * drivers/pci/pci-sysfs.c
- *
  * (C) Copyright 2002-2004 Greg Kroah-Hartman <greg@kroah.com>
  * (C) Copyright 2002-2004 IBM Corp.
  * (C) Copyright 2003 Matthew Wilcox
@@ -12,7 +10,6 @@
  * File attributes for PCI devices
  *
  * Modeled after usb's driverfs.c
- *
  */
 
 

drivers/pci/pci.c

@@ -1,11 +1,11 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- *	PCI Bus Services, see include/linux/pci.h for further explanation.
+ * PCI Bus Services, see include/linux/pci.h for further explanation.
  *
- *	Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter,
- *	David Mosberger-Tang
+ * Copyright 1993 -- 1997 Drew Eckhardt, Frederic Potter,
+ * David Mosberger-Tang
  *
- *	Copyright 1997 -- 2000 Martin Mares <mj@ucw.cz>
+ * Copyright 1997 -- 2000 Martin Mares <mj@ucw.cz>
  */
 
 #include <linux/acpi.h>
@@ -4183,6 +4183,7 @@ void pci_reset_secondary_bus(struct pci_dev *dev)
 	pci_read_config_word(dev, PCI_BRIDGE_CONTROL, &ctrl);
 	ctrl |= PCI_BRIDGE_CTL_BUS_RESET;
 	pci_write_config_word(dev, PCI_BRIDGE_CONTROL, ctrl);
+
 	/*
 	 * PCI spec v3.0 7.6.4.2 requires minimum Trst of 1ms.  Double
 	 * this to 2ms to ensure that we meet the minimum requirement.

drivers/pci/pcie/aer/aerdrv.c

@@ -1,15 +1,12 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * drivers/pci/pcie/aer/aerdrv.c
- *
- * This file implements the AER root port service driver. The driver will
- * register an irq handler. When root port triggers an AER interrupt, the irq
- * handler will collect root port status and schedule a work.
+ * Implement the AER root port service driver. The driver registers an IRQ
+ * handler. When a root port triggers an AER interrupt, the IRQ handler
+ * collects root port status and schedules work.
  *
  * Copyright (C) 2006 Intel Corp.
  *	Tom Long Nguyen (tom.l.nguyen@intel.com)
  *	Zhang Yanmin (yanmin.zhang@intel.com)
- *
  */
 
 #include <linux/pci.h>

drivers/pci/pcie/aer/aerdrv.h

@@ -3,7 +3,6 @@
  * Copyright (C) 2006 Intel Corp.
  *	Tom Long Nguyen (tom.l.nguyen@intel.com)
  *	Zhang Yanmin (yanmin.zhang@intel.com)
- *
  */
 
 #ifndef _AERDRV_H_

drivers/pci/pcie/aer/aerdrv_acpi.c

@@ -5,7 +5,6 @@
  * Copyright (C) 2006 Intel Corp.
  *	Tom Long Nguyen (tom.l.nguyen@intel.com)
  *	Zhang Yanmin (yanmin.zhang@intel.com)
- *
  */
 
 #include <linux/module.h>

drivers/pci/pcie/aer/aerdrv_core.c

@@ -1,16 +1,13 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * drivers/pci/pcie/aer/aerdrv_core.c
- *
- * This file implements the core part of PCIe AER. When a PCIe
- * error is delivered, an error message will be collected and printed to
- * console, then, an error recovery procedure will be executed by following
- * the PCI error recovery rules.
+ * Implement the core part of PCIe AER. When a PCIe error is delivered, an
+ * error message will be collected and printed to console, then an error
+ * recovery procedure will be executed by following the PCI error recovery
+ * rules.
  *
  * Copyright (C) 2006 Intel Corp.
  *	Tom Long Nguyen (tom.l.nguyen@intel.com)
  *	Zhang Yanmin (yanmin.zhang@intel.com)
- *
  */
 
 #include <linux/module.h>

drivers/pci/pcie/aer/aerdrv_errprint.c

@@ -1,13 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * drivers/pci/pcie/aer/aerdrv_errprint.c
- *
  * Format error messages and print them to console.
  *
  * Copyright (C) 2006 Intel Corp.
  *	Tom Long Nguyen (tom.l.nguyen@intel.com)
  *	Zhang Yanmin (yanmin.zhang@intel.com)
- *
  */
 
 #include <linux/module.h>

drivers/pci/pcie/aer/ecrc.c

@@ -1,8 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- *    Enables/disables PCIe ECRC checking.
+ * Enable/disable PCIe ECRC checking
  *
- *    (C) Copyright 2009 Hewlett-Packard Development Company, L.P.
+ * (C) Copyright 2009 Hewlett-Packard Development Company, L.P.
  *    Andrew Patterson <andrew.patterson@hp.com>
  */
 

drivers/pci/pcie/aspm.c

@@ -1,7 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * File:	drivers/pci/pcie/aspm.c
- * Enabling PCIe link L0s/L1 state and Clock Power Management
+ * Enable PCIe link L0s/L1 state and Clock Power Management
  *
  * Copyright (C) 2007 Intel
  * Copyright (C) Zhang Yanmin (yanmin.zhang@intel.com)