fastboot: properly handle unknown partition type
In getvar_partition_type() we attempt to find a filesystem driver for
the partition (of the list of driver enabled in U-Boot), on failure we
return the error to fastboot and completely bail out of the operation.
However, this should not be a failure, instead we should just default to
"raw". This allows commands like "fastboot format:ext4 userdata" to work
if userdata didn't already have an ext4 partition table (or if FS_EXT4
is disabled in U-Boot), as failing to determine the current partition
type is not an error in this case.
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Link: https://lore.kernel.org/r/20241113050607.1850472-1-caleb.connolly@linaro.org
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
diff --git a/drivers/fastboot/fb_getvar.c b/drivers/fastboot/fb_getvar.c
index 93cbd59..9c2ce65 100644
--- a/drivers/fastboot/fb_getvar.c
+++ b/drivers/fastboot/fb_getvar.c
@@ -230,7 +230,8 @@
if (r >= 0) {
r = fs_set_blk_dev_with_part(dev_desc, r);
if (r < 0)
- fastboot_fail("failed to set partition", response);
+ /* If we don't know then just default to raw */
+ fastboot_okay("raw", response);
else
fastboot_okay(fs_get_type_name(), response);
}