From e67beffee0795fbe3c2c6e65d9b63eb2b96897a2 Mon Sep 17 00:00:00 2001 From: Jesper Schmitz Mouridsen <jesper@schmitz.computer> Date: Tue, 9 Feb 2021 17:17:17 +0100 Subject: [PATCH] Allow last block to be read 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> --- lib/efi_loader/efi_disk.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index 1f6b817dea..307d5d759b 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -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 -- 2.39.5