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efi_memory: do parameter checks first

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The parameter checks should be done first.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
xypron.glpk@gmx.de 2017-07-21 19:04:33 +02:00 • committed by Alexander Graf
parent ca9193d2b1
commit 0ecba5db85
1 changed files with 3 additions and 3 deletions
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6
lib/efi_loader/efi_memory.c
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@ -407,6 +407,9 @@ efi_status_t efi_get_memory_map(unsigned long *memory_map_size,
map_size = map_entries * sizeof(struct efi_mem_desc); map_size = map_entries * sizeof(struct efi_mem_desc);
if (provided_map_size < map_size)
return EFI_BUFFER_TOO_SMALL;
*memory_map_size = map_size; *memory_map_size = map_size;
if (descriptor_size) if (descriptor_size)
@ -415,9 +418,6 @@ efi_status_t efi_get_memory_map(unsigned long *memory_map_size,
if (descriptor_version) if (descriptor_version)
*descriptor_version = EFI_MEMORY_DESCRIPTOR_VERSION; *descriptor_version = EFI_MEMORY_DESCRIPTOR_VERSION;
if (provided_map_size < map_size)
return EFI_BUFFER_TOO_SMALL;
/* Copy list into array */ /* Copy list into array */
if (memory_map) { if (memory_map) {
/* Return the list in ascending order */ /* Return the list in ascending order */