disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/arch/powerpc/kernel/nvram_64.c
..
..
@@ -1,18 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
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2
 /*
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  *  c 2001 PPC 64 Team, IBM Corp
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4
  *
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- *      This program is free software; you can redistribute it and/or
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- *      modify it under the terms of the GNU General Public License
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- *      as published by the Free Software Foundation; either version
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- *      2 of the License, or (at your option) any later version.
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- *
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5
  * /dev/nvram driver for PPC64
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- *
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- * This perhaps should live in drivers/char
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- *
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- * TODO: Split the /dev/nvram part (that one can use
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- *       drivers/char/generic_nvram.c) from the arch & partition
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- *       parsing code.
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6
  */
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7
 
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8
 #include <linux/types.h>
..
..
@@ -665,9 +655,7 @@
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 	int rc = -1;
666
656
 
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 	switch (reason) {
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-	case KMSG_DUMP_RESTART:
669
-	case KMSG_DUMP_HALT:
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-	case KMSG_DUMP_POWEROFF:
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+	case KMSG_DUMP_SHUTDOWN:
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 		/* These are almost always orderly shutdowns. */
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 		return;
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 	case KMSG_DUMP_OOPS:
..
..
@@ -713,136 +701,6 @@
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701
 
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 	spin_unlock_irqrestore(&lock, flags);
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 }
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-
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-static loff_t dev_nvram_llseek(struct file *file, loff_t offset, int origin)
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-{
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-	if (ppc_md.nvram_size == NULL)
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-		return -ENODEV;
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-	return generic_file_llseek_size(file, offset, origin, MAX_LFS_FILESIZE,
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-					ppc_md.nvram_size());
723
-}
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-
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-
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-static ssize_t dev_nvram_read(struct file *file, char __user *buf,
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-			  size_t count, loff_t *ppos)
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-{
729
-	ssize_t ret;
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-	char *tmp = NULL;
731
-	ssize_t size;
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-
733
-	if (!ppc_md.nvram_size) {
734
-		ret = -ENODEV;
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-		goto out;
736
-	}
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-
738
-	size = ppc_md.nvram_size();
739
-	if (size < 0) {
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-		ret = size;
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-		goto out;
742
-	}
743
-
744
-	if (*ppos >= size) {
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-		ret = 0;
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-		goto out;
747
-	}
748
-
749
-	count = min_t(size_t, count, size - *ppos);
750
-	count = min(count, PAGE_SIZE);
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-
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-	tmp = kmalloc(count, GFP_KERNEL);
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-	if (!tmp) {
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-		ret = -ENOMEM;
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-		goto out;
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-	}
757
-
758
-	ret = ppc_md.nvram_read(tmp, count, ppos);
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-	if (ret <= 0)
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-		goto out;
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-
762
-	if (copy_to_user(buf, tmp, ret))
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-		ret = -EFAULT;
764
-
765
-out:
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-	kfree(tmp);
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-	return ret;
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-
769
-}
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-
771
-static ssize_t dev_nvram_write(struct file *file, const char __user *buf,
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-			  size_t count, loff_t *ppos)
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-{
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-	ssize_t ret;
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-	char *tmp = NULL;
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-	ssize_t size;
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-
778
-	ret = -ENODEV;
779
-	if (!ppc_md.nvram_size)
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-		goto out;
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-
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-	ret = 0;
783
-	size = ppc_md.nvram_size();
784
-	if (*ppos >= size || size < 0)
785
-		goto out;
786
-
787
-	count = min_t(size_t, count, size - *ppos);
788
-	count = min(count, PAGE_SIZE);
789
-
790
-	tmp = memdup_user(buf, count);
791
-	if (IS_ERR(tmp)) {
792
-		ret = PTR_ERR(tmp);
793
-		goto out;
794
-	}
795
-
796
-	ret = ppc_md.nvram_write(tmp, count, ppos);
797
-
798
-	kfree(tmp);
799
-out:
800
-	return ret;
801
-}
802
-
803
-static long dev_nvram_ioctl(struct file *file, unsigned int cmd,
804
-			    unsigned long arg)
805
-{
806
-	switch(cmd) {
807
-#ifdef CONFIG_PPC_PMAC
808
-	case OBSOLETE_PMAC_NVRAM_GET_OFFSET:
809
-		printk(KERN_WARNING "nvram: Using obsolete PMAC_NVRAM_GET_OFFSET ioctl\n");
810
-	case IOC_NVRAM_GET_OFFSET: {
811
-		int part, offset;
812
-
813
-		if (!machine_is(powermac))
814
-			return -EINVAL;
815
-		if (copy_from_user(&part, (void __user*)arg, sizeof(part)) != 0)
816
-			return -EFAULT;
817
-		if (part < pmac_nvram_OF || part > pmac_nvram_NR)
818
-			return -EINVAL;
819
-		offset = pmac_get_partition(part);
820
-		if (offset < 0)
821
-			return offset;
822
-		if (copy_to_user((void __user*)arg, &offset, sizeof(offset)) != 0)
823
-			return -EFAULT;
824
-		return 0;
825
-	}
826
-#endif /* CONFIG_PPC_PMAC */
827
-	default:
828
-		return -EINVAL;
829
-	}
830
-}
831
-
832
-static const struct file_operations nvram_fops = {
833
-	.owner		= THIS_MODULE,
834
-	.llseek		= dev_nvram_llseek,
835
-	.read		= dev_nvram_read,
836
-	.write		= dev_nvram_write,
837
-	.unlocked_ioctl	= dev_nvram_ioctl,
838
-};
839
-
840
-static struct miscdevice nvram_dev = {
841
-	NVRAM_MINOR,
842
-	"nvram",
843
-	&nvram_fops
844
-};
845
-
846
704
 
847
705
 #ifdef DEBUG_NVRAM
848
706
 static void __init nvram_print_partitions(char * label)
..
..
@@ -991,9 +849,11 @@
991
849
 	long size = 0;
992
850
 	int rc;
993
851
 
852
+	BUILD_BUG_ON(NVRAM_BLOCK_LEN != 16);
853
+
994
854
 	/* Convert sizes from bytes to blocks */
995
-	req_size = _ALIGN_UP(req_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
996
-	min_size = _ALIGN_UP(min_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
855
+	req_size = ALIGN(req_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
856
+	min_size = ALIGN(min_size, NVRAM_BLOCK_LEN) / NVRAM_BLOCK_LEN;
997
857
 
998
858
 	/* If no minimum size specified, make it the same as the
999
859
 	 * requested size
..
..
@@ -1191,22 +1051,3 @@
1191
1051
 	kfree(header);
1192
1052
 	return err;
1193
1053
 }
1194
-
1195
-static int __init nvram_init(void)
1196
-{
1197
-	int rc;
1198
-	
1199
-	BUILD_BUG_ON(NVRAM_BLOCK_LEN != 16);
1200
-
1201
-	if (ppc_md.nvram_size == NULL || ppc_md.nvram_size() <= 0)
1202
-		return  -ENODEV;
1203
-
1204
-  	rc = misc_register(&nvram_dev);
1205
-	if (rc != 0) {
1206
-		printk(KERN_ERR "nvram_init: failed to register device\n");
1207
-		return rc;
1208
-	}
1209
-  	
1210
-  	return rc;
1211
-}
1212
-device_initcall(nvram_init);