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2024-02-20 ea08eeccae9297f7aabd2ef7f0c2517ac4549acc

 kernel/drivers/misc/pti.c
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@@ -1,16 +1,8 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  *  pti.c - PTI driver for cJTAG data extration
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  *
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  *  Copyright (C) Intel 2010
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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  *
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  * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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  *
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@@ -504,9 +496,8 @@
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  * pti_tty_driver_write()-  Write trace debugging data through the char
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  * interface to the PTI HW.  Part of the misc device implementation.
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  *
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- * @filp: Contains private data which is used to obtain
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- *        master, channel write ID.
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- * @data: trace data to be written.
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+ * @tty: tty struct containing pti information.
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+ * @buf: trace data to be written.
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  * @len:  # of byte to write.
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  *
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  * Returns:
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@@ -742,8 +733,8 @@
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  * pti_port_activate()- Used to start/initialize any items upon
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  * first opening of tty_port().
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  *
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- * @port- The tty port number of the PTI device.
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- * @tty-  The tty struct associated with this device.
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+ * @port: The tty port number of the PTI device.
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+ * @tty:  The tty struct associated with this device.
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  *
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  * Returns:
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  *	always returns 0
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@@ -763,7 +754,7 @@
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  * pti_port_shutdown()- Used to stop/shutdown any items upon the
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  * last tty port close.
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  *
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- * @port- The tty port number of the PTI device.
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+ * @port: The tty port number of the PTI device.
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  *
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  * Notes: The primary purpose of the PTI tty port 0 is to hook
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  * the syslog daemon to it; thus this port will be open for a
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@@ -789,8 +780,8 @@
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  * pti_pci_probe()- Used to detect pti on the pci bus and set
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  *		    things up in the driver.
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  *
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- * @pdev- pci_dev struct values for pti.
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- * @ent-  pci_device_id struct for pti driver.
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+ * @pdev: pci_dev struct values for pti.
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+ * @ent:  pci_device_id struct for pti driver.
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  *
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  * Returns:
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  *	0 for success
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@@ -800,7 +791,7 @@
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 		const struct pci_device_id *ent)
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 {
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 	unsigned int a;
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-	int retval = -EINVAL;
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+	int retval;
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 	int pci_bar = 1;
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 	dev_dbg(&pdev->dev, "%s %s(%d): PTI PCI ID %04x:%04x\n", __FILE__,
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@@ -842,7 +833,7 @@
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 	}
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 	drv_data->aperture_base = drv_data->pti_addr+APERTURE_14;
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 	drv_data->pti_ioaddr =
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-		ioremap_nocache((u32)drv_data->aperture_base,
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+		ioremap((u32)drv_data->aperture_base,
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 		APERTURE_LEN);
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 	if (!drv_data->pti_ioaddr) {
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 		retval = -ENOMEM;
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@@ -907,7 +898,6 @@
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 };
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 /**
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- *
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  * pti_init()- Overall entry/init call to the pti driver.
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  *             It starts the registration process with the kernel.
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  *
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@@ -918,7 +908,7 @@
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  */
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 static int __init pti_init(void)
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 {
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-	int retval = -EINVAL;
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+	int retval;
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 	/* First register module as tty device */
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