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-rw-r--r--fs/partitions/ibm.c29
1 files changed, 11 insertions, 18 deletions
diff --git a/fs/partitions/ibm.c b/fs/partitions/ibm.c
index 1e4a93835fed..830c55d86ab1 100644
--- a/fs/partitions/ibm.c
+++ b/fs/partitions/ibm.c
@@ -1,15 +1,9 @@
1/* 1/*
2 * File...........: linux/fs/partitions/ibm.c 2 * File...........: linux/fs/partitions/ibm.c
3 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> 3 * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
4 * Volker Sameske <sameske@de.ibm.com> 4 * Volker Sameske <sameske@de.ibm.com>
5 * Bugreports.to..: <Linux390@de.ibm.com> 5 * Bugreports.to..: <Linux390@de.ibm.com>
6 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 6 * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
7
8 * History of changes (starts July 2000)
9 * 07/10/00 Fixed detection of CMS formatted disks
10 * 02/13/00 VTOC partition support added
11 * 12/27/01 fixed PL030593 (CMS reserved minidisk not detected on 64 bit)
12 * 07/24/03 no longer using contents of freed page for CMS label recognition (BZ3611)
13 */ 7 */
14 8
15#include <linux/config.h> 9#include <linux/config.h>
@@ -25,7 +19,7 @@
25#include "ibm.h" 19#include "ibm.h"
26 20
27/* 21/*
28 * compute the block number from a 22 * compute the block number from a
29 * cyl-cyl-head-head structure 23 * cyl-cyl-head-head structure
30 */ 24 */
31static inline int 25static inline int
@@ -34,9 +28,8 @@ cchh2blk (struct vtoc_cchh *ptr, struct hd_geometry *geo) {
34 ptr->hh * geo->sectors; 28 ptr->hh * geo->sectors;
35} 29}
36 30
37
38/* 31/*
39 * compute the block number from a 32 * compute the block number from a
40 * cyl-cyl-head-head-block structure 33 * cyl-cyl-head-head-block structure
41 */ 34 */
42static inline int 35static inline int
@@ -48,7 +41,7 @@ cchhb2blk (struct vtoc_cchhb *ptr, struct hd_geometry *geo) {
48 41
49/* 42/*
50 */ 43 */
51int 44int
52ibm_partition(struct parsed_partitions *state, struct block_device *bdev) 45ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
53{ 46{
54 int blocksize, offset, size; 47 int blocksize, offset, size;
@@ -77,7 +70,7 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
77 goto out_nogeo; 70 goto out_nogeo;
78 if ((label = kmalloc(sizeof(union label_t), GFP_KERNEL)) == NULL) 71 if ((label = kmalloc(sizeof(union label_t), GFP_KERNEL)) == NULL)
79 goto out_nolab; 72 goto out_nolab;
80 73
81 if (ioctl_by_bdev(bdev, BIODASDINFO, (unsigned long)info) != 0 || 74 if (ioctl_by_bdev(bdev, BIODASDINFO, (unsigned long)info) != 0 ||
82 ioctl_by_bdev(bdev, HDIO_GETGEO, (unsigned long)geo) != 0) 75 ioctl_by_bdev(bdev, HDIO_GETGEO, (unsigned long)geo) != 0)
83 goto out_noioctl; 76 goto out_noioctl;
@@ -154,13 +147,13 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
154 147
155 /* OK, we got valid partition data */ 148 /* OK, we got valid partition data */
156 offset = cchh2blk(&f1.DS1EXT1.llimit, geo); 149 offset = cchh2blk(&f1.DS1EXT1.llimit, geo);
157 size = cchh2blk(&f1.DS1EXT1.ulimit, geo) - 150 size = cchh2blk(&f1.DS1EXT1.ulimit, geo) -
158 offset + geo->sectors; 151 offset + geo->sectors;
159 if (counter >= state->limit) 152 if (counter >= state->limit)
160 break; 153 break;
161 put_partition(state, counter + 1, 154 put_partition(state, counter + 1,
162 offset * (blocksize >> 9), 155 offset * (blocksize >> 9),
163 size * (blocksize >> 9)); 156 size * (blocksize >> 9));
164 counter++; 157 counter++;
165 blk++; 158 blk++;
166 } 159 }
@@ -175,7 +168,7 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
175 offset = (info->label_block + 1); 168 offset = (info->label_block + 1);
176 size = i_size >> 9; 169 size = i_size >> 9;
177 put_partition(state, 1, offset*(blocksize >> 9), 170 put_partition(state, 1, offset*(blocksize >> 9),
178 size-offset*(blocksize >> 9)); 171 size-offset*(blocksize >> 9));
179 } 172 }
180 173
181 printk("\n"); 174 printk("\n");
@@ -183,7 +176,7 @@ ibm_partition(struct parsed_partitions *state, struct block_device *bdev)
183 kfree(geo); 176 kfree(geo);
184 kfree(info); 177 kfree(info);
185 return 1; 178 return 1;
186 179
187out_readerr: 180out_readerr:
188out_noioctl: 181out_noioctl:
189 kfree(label); 182 kfree(label);