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efi_driver: fix duplicate efiblk#0 issue

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The devnum value of the blk_desc structure starts from 0,
current efi_bl_create_block_device() function creates
two "efiblk#0" devices for the cases that blk_find_max_devnum()
returns -ENODEV and blk_find_max_devnum() returns 0(one device
found in this case).

This commit uses blk_next_free_devnum() instead of blk_find_max_devnum().

Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Masahisa Kojima 2023-07-03 15:08:45 +09:00 committed by Heinrich Schuchardt
parent 21eb7c16ec
commit 06fc19ca4d
1 changed files with 2 additions and 4 deletions
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6
lib/efi_driver/efi_block_device.c
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@ -124,10 +124,8 @@ efi_bl_create_block_device(efi_handle_t handle, void *interface)
struct efi_block_io *io = interface;
struct efi_blk_plat *plat;
devnum = blk_find_max_devnum(UCLASS_EFI_LOADER);
if (devnum == -ENODEV)
devnum = 0;
else if (devnum < 0)
devnum = blk_next_free_devnum(UCLASS_EFI_LOADER);
if (devnum < 0)
return EFI_OUT_OF_RESOURCES;
name = calloc(1, 18); /* strlen("efiblk#2147483648") + 1 */