Merge patch series "env: scsi: support SCSI env without partition UUID"

David Lechner <[email protected]> says:

This is a series adding support for reading U-Boot env directly from
SCSI devices that do not have a partition table, similar to how we can
already do this for MMC devices.

The motivation behind this is that MediaTek's BSP is already using the
same disk images for both MMC and UFS devices, so we need to be able to
read the env from SCSI devices without requiring a partition UUID.

The series starts with cleaning up a few oddities we noticed in the
existing code. Then some refactoring so that the env code manages
calling scsi_scan() so that we don't have to duplicate that for the
new code path. Then finally, the last few patches add and document the
new functionality.

Link: https://lore.kernel.org/r/[email protected]

1 files changed, 5 insertions, 0 deletions

diff --git a/include/scsi.h b/include/scsi.h
index 8d6c5116419..2520a8b8fe6 100644
--- a/include/scsi.h
+++ b/include/scsi.h
@@ -340,6 +340,7 @@ int scsi_bus_reset(struct udevice *dev);
  * scsi_scan() - Scan all SCSI controllers for available devices
  *
  * @vebose: true to show information about each device found
+ * Return: 0 if OK, -ve on error
  */
 int scsi_scan(bool verbose);
 
@@ -348,15 +349,19 @@ int scsi_scan(bool verbose);
  *
  * @dev:	SCSI bus
  * @verbose:	true to show information about each device found
+ * Return: 0 if OK, -ve on error
  */
 int scsi_scan_dev(struct udevice *dev, bool verbose);
 
 /**
  * scsi_get_blk_by_uuid() - Provides SCSI partition information.
  *
+ * scsi_scan() must have been called before calling this function.
+ *
  * @uuid:		UUID of the partition for fetching its info
  * @blk_desc_ptr:	Provides the blk descriptor
  * @part_info_ptr:	Provides partition info
+ * Return: 0 if OK, -ve on error
  */
 int scsi_get_blk_by_uuid(const char *uuid, struct blk_desc **blk_desc_ptr,
 			 struct disk_partition *part_info_ptr);