From eaa6fc67e11c13e00799af9ca70d9fa3725c85e7 Mon Sep 17 00:00:00 2001 From: Heinrich Schuchardt Date: Sun, 16 Feb 2020 18:13:40 +0100 Subject: [PATCH] efi/libstub: Add function description of efi_allocate_pages() Provide a Sphinx style function description for efi_allocate_pages(). Signed-off-by: Heinrich Schuchardt Link: https://lore.kernel.org/r/20200216171340.6070-1-xypron.glpk@gmx.de Signed-off-by: Ard Biesheuvel --- drivers/firmware/efi/libstub/mem.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) diff --git a/drivers/firmware/efi/libstub/mem.c b/drivers/firmware/efi/libstub/mem.c index 5808c87..1706008 100644 --- a/drivers/firmware/efi/libstub/mem.c +++ b/drivers/firmware/efi/libstub/mem.c @@ -65,8 +65,20 @@ fail: return status; } -/* - * Allocate at the highest possible address that is not above 'max'. +/** + * efi_allocate_pages() - Allocate memory pages + * @size: minimum number of bytes to allocate + * @addr: On return the address of the first allocated page. The first + * allocated page has alignment EFI_ALLOC_ALIGN which is an + * architecture dependent multiple of the page size. + * @max: the address that the last allocated memory page shall not + * exceed + * + * Allocate pages as EFI_LOADER_DATA. The allocated pages are aligned according + * to EFI_ALLOC_ALIGN. The last allocated page will not exceed the address + * given by @max. + * + * Return: status code */ efi_status_t efi_allocate_pages(unsigned long size, unsigned long *addr, unsigned long max) -- 2.7.4