diff options
| author | Mikhail Kshevetskiy <[email protected]> | 2026-01-20 01:33:03 +0300 |
|---|---|---|
| committer | Tom Rini <[email protected]> | 2026-02-04 10:30:55 -0600 |
| commit | 0ced9ef07361980d1418eab33ee1f41274d1e0e2 (patch) | |
| tree | e678fed8e467beb4b793ed45d70e5555d30032af | |
| parent | 90efb8d394de9df1ae2c20f5e25ffc2009dc7ec5 (diff) | |
disk: part: fix partition search boundaries
GPT disk partition with max available number (ex: /dev/mmcblk128) can't
be read/write from U-Boot using read/write command. Here is an example:
=> mmc part
Partition Map for mmc device 0 -- Partition Type: EFI
Part Start LBA End LBA Name
Attributes
Type GUID
Partition GUID
1 0x00001000 0x000013ff "env1"
attrs: 0x0000000000000000
type: 0fc63daf-8483-4772-8e79-3d69d8477de4
guid: 5452574f-2211-4433-5566-778899aabb02
2 0x00001400 0x000017ff "env2"
attrs: 0x0000000000000000
type: 0fc63daf-8483-4772-8e79-3d69d8477de4
guid: 5452574f-2211-4433-5566-778899aabb03
.................
8 0x00158000 0x0034bfff "apps"
attrs: 0x0000000000000000
type: 0fc63daf-8483-4772-8e79-3d69d8477de4
guid: 5452574f-2211-4433-5566-778899aabb09
128 0x00000420 0x00000fff "fip"
attrs: 0x0000000000000000
type: c12a7328-f81f-11d2-ba4b-00a0c93ec93b
guid: 5452574f-2211-4433-5566-778899aabb01
=> read mmc 0#fip ${loadaddr} 0 4
Could not find "fip" partition
** Bad device specification mmc 0#fip **
** Bad device specification mmc 0#fip **
Couldn't find partition mmc 0#fip
The error is caused by invalid boundary checks. This patch fixes an
issue.
Fixes: 43fd4bcefd4e ("disk: part: implement generic function part_get_info_by_uuid()")
Fixes: 56670d6fb83f ("disk: part: use common api to lookup part driver")
Signed-off-by: Mikhail Kshevetskiy <[email protected]>
Acked-by: Quentin Schulz <[email protected]>
Reviewed-By: Michael Trimarchi <[email protected]>
| -rw-r--r-- | disk/part.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/disk/part.c b/disk/part.c index 49a0fca6b89..4923dc44593 100644 --- a/disk/part.c +++ b/disk/part.c @@ -674,7 +674,7 @@ int part_get_info_by_name(struct blk_desc *desc, const char *name, if (!part_drv) return -1; - for (i = 1; i < part_drv->max_entries; i++) { + for (i = 1; i <= part_drv->max_entries; i++) { ret = part_driver_get_info(part_drv, desc, i, info); if (ret != 0) { /* -ENOSYS means no ->get_info method. */ @@ -709,7 +709,7 @@ int part_get_info_by_uuid(struct blk_desc *desc, const char *uuid, if (!part_drv) return -1; - for (i = 1; i < part_drv->max_entries; i++) { + for (i = 1; i <= part_drv->max_entries; i++) { ret = part_driver_get_info(part_drv, desc, i, info); if (ret != 0) { /* -ENOSYS means no ->get_info method. */ |