Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   Ard Biesheuvel <ardb@kernel.org>
To:     linux-efi@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
        Thomas Gleixner <tglx@linutronix.de>
Cc:     Ard Biesheuvel <ardb@kernel.org>, linux-kernel@vger.kernel.org,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Arvind Sankar <nivedita@alum.mit.edu>,
        Bhupesh Sharma <bhsharma@redhat.com>,
        Masayoshi Mizuma <m.mizuma@jp.fujitsu.com>
Subject: [PATCH 3/6] efi/gop: Return EFI_SUCCESS if a usable GOP was found
Date:   Fri,  6 Dec 2019 16:55:39 +0000
Message-Id: <20191206165542.31469-4-ardb@kernel.org>
In-Reply-To: <20191206165542.31469-1-ardb@kernel.org>
References: <20191206165542.31469-1-ardb@kernel.org>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

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

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@alum.mit.edu>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
 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