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Allow last block to be read

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The last block is of size media->block_size

Signed-off-by: Jesper Schmitz Mouridsen <jesper@schmitz.computer>

Simplify expression.
Apply same change to efi_disk_write_blocks().

Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Jesper Schmitz Mouridsen 2021-02-09 17:17:17 +01:00 committed by Heinrich Schuchardt
parent ea966d24ef
commit e67beffee0
1 changed files with 2 additions and 2 deletions
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4
lib/efi_loader/efi_disk.c
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@ -148,7 +148,7 @@ static efi_status_t EFIAPI efi_disk_read_blocks(struct efi_block_io *this,
(uintptr_t)buffer & (this->media->io_align - 1))
return EFI_INVALID_PARAMETER;
if (lba * this->media->block_size + buffer_size >
this->media->last_block * this->media->block_size)
(this->media->last_block + 1) * this->media->block_size)
return EFI_INVALID_PARAMETER;
#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER
@ -216,7 +216,7 @@ static efi_status_t EFIAPI efi_disk_write_blocks(struct efi_block_io *this,
(uintptr_t)buffer & (this->media->io_align - 1))
return EFI_INVALID_PARAMETER;
if (lba * this->media->block_size + buffer_size >
this->media->last_block * this->media->block_size)
(this->media->last_block + 1) * this->media->block_size)
return EFI_INVALID_PARAMETER;
#ifdef CONFIG_EFI_LOADER_BOUNCE_BUFFER