efi: Allow efi_free() to be called with size of 0

[cascardo/linux.git] / drivers / firmware / efi / efi-stub-helper.c

diff --git a/drivers/firmware/efi/efi-stub-helper.c b/drivers/firmware/efi/efi-stub-helper.c
index b314bf7..fda510f 100644 (file)
--- a/drivers/firmware/efi/efi-stub-helper.c
+++ b/drivers/firmware/efi/efi-stub-helper.c
@@ -255,6 +255,9 @@ static void efi_free(efi_system_table_t *sys_table_arg, unsigned long size,
 {
        unsigned long nr_pages;
 
+       if (!size)
+               return;
+
        nr_pages = round_up(size, EFI_PAGE_SIZE) / EFI_PAGE_SIZE;
        efi_call_phys2(sys_table_arg->boottime->free_pages, addr, nr_pages);
 }