[PATCH 08/33] efi/gop: Factor out locating the gop into a function

Ard Biesheuvel
2020-04-24T13:08:18Z

From: Arvind Sankar <nivedita@alum.mit.edu>

Move the loop to find a gop into its own function.

Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200320020028.1936003-5-nivedita@alum.mit.edu
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
drivers/firmware/efi/libstub/gop.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)

diff --git a/drivers/firmware/efi/libstub/gop.c b/drivers/firmware/efi/libstub/gop.c
index d692b8c65813..92abcf558845 100644
--- a/drivers/firmware/efi/libstub/gop.c
+++ b/drivers/firmware/efi/libstub/gop.c
@@ -85,19 +85,17 @@ setup_pixel_info(struct screen_info *si, u32 pixels_per_scan_line,
}
}

-static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
- unsigned long size, void **handles)
+static efi_graphics_output_protocol_t *
+find_gop(efi_guid_t *proto, unsigned long size, void **handles)
{
efi_graphics_output_protocol_t *gop, *first_gop;
efi_graphics_output_protocol_mode_t *mode;
efi_graphics_output_mode_info_t *info = NULL;
- efi_physical_addr_t fb_base;
efi_status_t status;
efi_handle_t h;
int i;

first_gop = NULL;
- gop = NULL;

for_each_efi_handle(h, handles, size, i) {
efi_guid_t conout_proto = EFI_CONSOLE_OUT_DEVICE_GUID;
@@ -134,12 +132,25 @@ static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
}
}

+ return first_gop;
+}
+
+static efi_status_t setup_gop(struct screen_info *si, efi_guid_t *proto,
+ unsigned long size, void **handles)
+{
+ efi_graphics_output_protocol_t *gop;
+ efi_graphics_output_protocol_mode_t *mode;
+ efi_graphics_output_mode_info_t *info = NULL;
+ efi_physical_addr_t fb_base;
+
+ gop = find_gop(proto, size, handles);
+
/* Did we find any GOPs? */
- if (!first_gop)
+ if (!gop)
return EFI_NOT_FOUND;

/* EFI framebuffer */
- mode = efi_table_attr(first_gop, mode);
+ mode = efi_table_attr(gop, mode);
info = efi_table_attr(mode, info);

si->orig_video_isVGA = VIDEO_TYPE_EFI;
--
2.17.1