[PATCH 3/6] efi/gop: Return EFI_SUCCESS if a usable GOP was found

From: Ard Biesheuvel
Date: Fri Dec 06 2019 - 11:56:26 EST


From: Arvind Sankar <nivedita@xxxxxxxxxxxx>

If we've found a usable instance of the Graphics Output Protocol
(GOP) with a framebuffer, it is possible that one of the later EFI
calls fails while checking if any support console output. In this
case status may be an EFI error code even though we found a usable
GOP.

Fix this by explicitly return EFI_SUCCESS if a usable GOP has been
located.

Signed-off-by: Arvind Sankar <nivedita@xxxxxxxxxxxx>
Signed-off-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
---
drivers/firmware/efi/libstub/gop.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/firmware/efi/libstub/gop.c b/drivers/firmware/efi/libstub/gop.c
index 08f3c1a2fb48..69b2b019a1d0 100644
--- a/drivers/firmware/efi/libstub/gop.c
+++ b/drivers/firmware/efi/libstub/gop.c
@@ -198,7 +198,7 @@ setup_gop32(efi_system_table_t *sys_table_arg, struct screen_info *si,

si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS;

- return status;
+ return EFI_SUCCESS;
}

static efi_status_t
@@ -316,7 +316,7 @@ setup_gop64(efi_system_table_t *sys_table_arg, struct screen_info *si,

si->capabilities |= VIDEO_CAPABILITY_SKIP_QUIRKS;

- return status;
+ return EFI_SUCCESS;
}

/*
--
2.17.1