aboutsummaryrefslogtreecommitdiff
path: root/drivers/mtd/maps/physmap.c
diff options
context:
space:
mode:
authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2009-02-11 13:12:17 -0800
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-02-14 08:06:20 +0000
commite480814f138cd5d78a8efe397756ba6b6518fdb6 (patch)
tree92b2b8eabd2133ba65f814a945fa8245f34da7eb /drivers/mtd/maps/physmap.c
parent3afd522de8d8ec446efe957b86e4f63e3dd8ce9d (diff)
downloadlinaro-lsk-e480814f138cd5d78a8efe397756ba6b6518fdb6.tar.gz
[MTD] [MAPS] physmap: fix wrong free and del_mtd_{partition,device}
commit 176bf2e0f10ecf1d20a97db3bd5bb2e6ba0b5668 ("physmap: fix leak of memory returned by parse_mtd_partitions") deals with a memory leak and frees the pointer array of mtd_partition after the call to add_mtd_partitions(). the problem is that mtd_table[x]->name still points to the freed memory. Aldo physmap_flash_remove() should call del_mtd_partitions() or del_mtd_device() only once. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Reported-by: Matthias Kaehlcke <matthias@kaehlcke.net> Tested-by: Matthias Kaehlcke <matthias@kaehlcke.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Diffstat (limited to 'drivers/mtd/maps/physmap.c')
-rw-r--r--drivers/mtd/maps/physmap.c38
1 files changed, 19 insertions, 19 deletions
diff --git a/drivers/mtd/maps/physmap.c b/drivers/mtd/maps/physmap.c
index 87743661d48..4b122e7ab4b 100644
--- a/drivers/mtd/maps/physmap.c
+++ b/drivers/mtd/maps/physmap.c
@@ -29,6 +29,7 @@ struct physmap_flash_info {
struct map_info map[MAX_RESOURCES];
#ifdef CONFIG_MTD_PARTITIONS
int nr_parts;
+ struct mtd_partition *parts;
#endif
};
@@ -45,25 +46,26 @@ static int physmap_flash_remove(struct platform_device *dev)
physmap_data = dev->dev.platform_data;
-#ifdef CONFIG_MTD_CONCAT
- if (info->cmtd != info->mtd[0]) {
+#ifdef CONFIG_MTD_PARTITIONS
+ if (info->nr_parts) {
+ del_mtd_partitions(info->cmtd);
+ kfree(info->parts);
+ } else if (physmap_data->nr_parts)
+ del_mtd_partitions(info->cmtd);
+ else
del_mtd_device(info->cmtd);
+#else
+ del_mtd_device(info->cmtd);
+#endif
+
+#ifdef CONFIG_MTD_CONCAT
+ if (info->cmtd != info->mtd[0])
mtd_concat_destroy(info->cmtd);
- }
#endif
for (i = 0; i < MAX_RESOURCES; i++) {
- if (info->mtd[i] != NULL) {
-#ifdef CONFIG_MTD_PARTITIONS
- if (info->nr_parts || physmap_data->nr_parts)
- del_mtd_partitions(info->mtd[i]);
- else
- del_mtd_device(info->mtd[i]);
-#else
- del_mtd_device(info->mtd[i]);
-#endif
+ if (info->mtd[i] != NULL)
map_destroy(info->mtd[i]);
- }
}
return 0;
}
@@ -86,9 +88,6 @@ static int physmap_flash_probe(struct platform_device *dev)
int err = 0;
int i;
int devices_found = 0;
-#ifdef CONFIG_MTD_PARTITIONS
- struct mtd_partition *parts;
-#endif
physmap_data = dev->dev.platform_data;
if (physmap_data == NULL)
@@ -167,10 +166,11 @@ static int physmap_flash_probe(struct platform_device *dev)
goto err_out;
#ifdef CONFIG_MTD_PARTITIONS
- err = parse_mtd_partitions(info->cmtd, part_probe_types, &parts, 0);
+ err = parse_mtd_partitions(info->cmtd, part_probe_types,
+ &info->parts, 0);
if (err > 0) {
- add_mtd_partitions(info->cmtd, parts, err);
- kfree(parts);
+ add_mtd_partitions(info->cmtd, info->parts, err);
+ info->nr_parts = err;
return 0;
}