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| author | Ard Biesheuvel <ardb@kernel.org> | 2019-12-24 18:10:07 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-12-25 12:49:16 +0300 |
| commit | 2732ea0d5c0a67ec86bfbde2bd68b6152e23ec4e (patch) | |
| tree | 46b819245ac67d0a279a10701fa2a5b784bbc29b /drivers | |
| parent | a8147dba75b188bff87d4ad072db84a0b70d716d (diff) | |
| download | linux-2732ea0d5c0a67ec86bfbde2bd68b6152e23ec4e.tar.xz | |
efi/libstub: Use a helper to iterate over a EFI handle array
Iterating over a EFI handle array is a bit finicky, since we have
to take mixed mode into account, where handles are only 32-bit
while the native efi_handle_t type is 64-bit.
So introduce a helper, and replace the various occurrences of
this pattern.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Cc: Arvind Sankar <nivedita@alum.mit.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: James Morse <james.morse@arm.com>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: https://lkml.kernel.org/r/20191224151025.32482-8-ardb@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/firmware/efi/libstub/gop.c | 9 |
1 files changed, 2 insertions, 7 deletions
diff --git a/drivers/firmware/efi/libstub/gop.c b/drivers/firmware/efi/libstub/gop.c index 94045ab7dd3d..5f4fbc2ac687 100644 --- a/drivers/firmware/efi/libstub/gop.c +++ b/drivers/firmware/efi/libstub/gop.c @@ -91,7 +91,6 @@ setup_gop(efi_system_table_t *sys_table_arg, struct screen_info *si, efi_guid_t *proto, unsigned long size, void **handles) { efi_graphics_output_protocol_t *gop, *first_gop; - unsigned long nr_gops; u16 width, height; u32 pixels_per_scan_line; u32 ext_lfb_base; @@ -99,22 +98,18 @@ setup_gop(efi_system_table_t *sys_table_arg, struct screen_info *si, efi_pixel_bitmask_t pixel_info; int pixel_format; efi_status_t status; + efi_handle_t h; int i; - bool is64 = efi_is_64bit(); first_gop = NULL; gop = NULL; - nr_gops = size / (is64 ? sizeof(u64) : sizeof(u32)); - for (i = 0; i < nr_gops; i++) { + for_each_efi_handle(h, handles, size, i) { efi_graphics_output_protocol_mode_t *mode; efi_graphics_output_mode_info_t *info = NULL; efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID; bool conout_found = false; void *dummy = NULL; - efi_handle_t h = (efi_handle_t)(unsigned long) - (is64 ? ((u64 *)handles)[i] - : ((u32 *)handles)[i]); efi_physical_addr_t current_fb_base; status = efi_call_early(handle_protocol, h, |