[PATCH v3] cmd: usb_mass_storage: Use part_get_info_by_dev_and_name_or_num

Sean Anderson sean.anderson at seco.com
Fri Oct 29 17:05:54 CEST 2021

This allows specifying partitions using more extended syntax. This is
particularly useful to access eMMC hardware partitions. For example,
this allows something like

	ums 0 mmc 0.0,0.1,0.2,0.3

to expose four LUNs for each of the four default eMMC hardware
partitions. Note that the comma syntax was already present, and this
syntax is already documented.

Signed-off-by: Sean Anderson <sean.anderson at seco.com>

Changes in v3:
- Fix example in commit message

Changes in v2:
- Reword commit message to include an example

 cmd/usb_mass_storage.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/cmd/usb_mass_storage.c b/cmd/usb_mass_storage.c
index 14fa7233c7..d4e619b842 100644
--- a/cmd/usb_mass_storage.c
+++ b/cmd/usb_mass_storage.c
@@ -74,8 +74,8 @@ static int ums_init(const char *devtype, const char *devnums_part_str)
 		if (!devnum_part_str)
-		partnum = blk_get_device_part_str(devtype, devnum_part_str,
-					&block_dev, &info, 1);
+		partnum = part_get_info_by_dev_and_name_or_num(devtype, devnum_part_str,
+							       &block_dev, &info, 1);
 		if (partnum < 0)
 			goto cleanup;

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