add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/arch/powerpc/kernel/rtas_flash.c
..
..
@@ -1,10 +1,6 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  *  c 2001 PPC 64 Team, IBM Corp
3
- *
4
- *      This program is free software; you can redistribute it and/or
5
- *      modify it under the terms of the GNU General Public License
6
- *      as published by the Free Software Foundation; either version
7
- *      2 of the License, or (at your option) any later version.
8
4
  *
9
5
  * /proc/powerpc/rtas/firmware_flash interface
10
6
  *
..
..
@@ -523,7 +519,7 @@
523
519
 		args_buf->status = VALIDATE_INCOMPLETE;
524
520
 	}
525
521
 
526
-	if (!access_ok(VERIFY_READ, buf, count)) {
522
+	if (!access_ok(buf, count)) {
527
523
 		rc = -EFAULT;
528
524
 		goto done;
529
525
 	}
..
..
@@ -659,7 +655,7 @@
659
655
 	const char *filename;
660
656
 	const char *rtas_call_name;
661
657
 	int *status;
662
-	const struct file_operations fops;
658
+	const struct proc_ops ops;
663
659
 };
664
660
 
665
661
 static const struct rtas_flash_file rtas_flash_files[] = {
..
..
@@ -667,36 +663,36 @@
667
663
 		.filename	= "powerpc/rtas/" FIRMWARE_FLASH_NAME,
668
664
 		.rtas_call_name	= "ibm,update-flash-64-and-reboot",
669
665
 		.status		= &rtas_update_flash_data.status,
670
-		.fops.read	= rtas_flash_read_msg,
671
-		.fops.write	= rtas_flash_write,
672
-		.fops.release	= rtas_flash_release,
673
-		.fops.llseek	= default_llseek,
666
+		.ops.proc_read	= rtas_flash_read_msg,
667
+		.ops.proc_write	= rtas_flash_write,
668
+		.ops.proc_release = rtas_flash_release,
669
+		.ops.proc_lseek	= default_llseek,
674
670
 	},
675
671
 	{
676
672
 		.filename	= "powerpc/rtas/" FIRMWARE_UPDATE_NAME,
677
673
 		.rtas_call_name	= "ibm,update-flash-64-and-reboot",
678
674
 		.status		= &rtas_update_flash_data.status,
679
-		.fops.read	= rtas_flash_read_num,
680
-		.fops.write	= rtas_flash_write,
681
-		.fops.release	= rtas_flash_release,
682
-		.fops.llseek	= default_llseek,
675
+		.ops.proc_read	= rtas_flash_read_num,
676
+		.ops.proc_write	= rtas_flash_write,
677
+		.ops.proc_release = rtas_flash_release,
678
+		.ops.proc_lseek	= default_llseek,
683
679
 	},
684
680
 	{
685
681
 		.filename	= "powerpc/rtas/" VALIDATE_FLASH_NAME,
686
682
 		.rtas_call_name	= "ibm,validate-flash-image",
687
683
 		.status		= &rtas_validate_flash_data.status,
688
-		.fops.read	= validate_flash_read,
689
-		.fops.write	= validate_flash_write,
690
-		.fops.release	= validate_flash_release,
691
-		.fops.llseek	= default_llseek,
684
+		.ops.proc_read	= validate_flash_read,
685
+		.ops.proc_write	= validate_flash_write,
686
+		.ops.proc_release = validate_flash_release,
687
+		.ops.proc_lseek	= default_llseek,
692
688
 	},
693
689
 	{
694
690
 		.filename	= "powerpc/rtas/" MANAGE_FLASH_NAME,
695
691
 		.rtas_call_name	= "ibm,manage-flash-image",
696
692
 		.status		= &rtas_manage_flash_data.status,
697
-		.fops.read	= manage_flash_read,
698
-		.fops.write	= manage_flash_write,
699
-		.fops.llseek	= default_llseek,
693
+		.ops.proc_read	= manage_flash_read,
694
+		.ops.proc_write	= manage_flash_write,
695
+		.ops.proc_lseek	= default_llseek,
700
696
 	}
701
697
 };
702
698
 
..
..
@@ -714,9 +710,9 @@
714
710
 	if (!rtas_validate_flash_data.buf)
715
711
 		return -ENOMEM;
716
712
 
717
-	flash_block_cache = kmem_cache_create("rtas_flash_cache",
718
-					      RTAS_BLK_SIZE, RTAS_BLK_SIZE, 0,
719
-					      NULL);
713
+	flash_block_cache = kmem_cache_create_usercopy("rtas_flash_cache",
714
+						       RTAS_BLK_SIZE, RTAS_BLK_SIZE,
715
+						       0, 0, RTAS_BLK_SIZE, NULL);
720
716
 	if (!flash_block_cache) {
721
717
 		printk(KERN_ERR "%s: failed to create block cache\n",
722
718
 				__func__);
..
..
@@ -727,7 +723,7 @@
727
723
 		const struct rtas_flash_file *f = &rtas_flash_files[i];
728
724
 		int token;
729
725
 
730
-		if (!proc_create(f->filename, 0600, NULL, &f->fops))
726
+		if (!proc_create(f->filename, 0600, NULL, &f->ops))
731
727
 			goto enomem;
732
728
 
733
729
 		/*