Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Paul Cercueil <paul@crapouillou.net>
To:     Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc:     Paul Burton <paulburton@kernel.org>,
        Krzysztof Kozlowski <krzk@kernel.org>,
        =?UTF-8?q?=E5=91=A8=E7=90=B0=E6=9D=B0?= <zhouyanjie@wanyeetech.com>,
        od@zcrc.me, linux-kernel@vger.kernel.org,
        linux-mips@vger.kernel.org, Paul Cercueil <paul@crapouillou.net>
Subject: [PATCH v2 07/13] MIPS: generic: Support booting with built-in or appended DTB
Date:   Wed, 12 Aug 2020 02:15:04 +0200
Message-Id: <20200812001510.460382-8-paul@crapouillou.net>
In-Reply-To: <20200812001510.460382-1-paul@crapouillou.net>
References: <20200812001510.460382-1-paul@crapouillou.net>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

The plat_get_fdt() checked that the kernel was booted using UHI before
reading the 'fw_passed_dtb' variable. However, this variable is also set
when the kernel has been appended, or when it has been built into the
kernel.

Support these usecases by removing the UHI check.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---

Notes:
    v2: No change

 arch/mips/generic/init.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/mips/generic/init.c b/arch/mips/generic/init.c
index 029f47ea390c..66a19337d2ab 100644
--- a/arch/mips/generic/init.c
+++ b/arch/mips/generic/init.c
@@ -39,12 +39,11 @@ void __init *plat_get_fdt(void)
 		/* Already set up */
 		return (void *)fdt;
 
-	if ((fw_arg0 == -2) && !fdt_check_header((void *)fw_passed_dtb)) {
+	if (fw_passed_dtb && !fdt_check_header((void *)fw_passed_dtb)) {
 		/*
-		 * We booted using the UHI boot protocol, so we have been
-		 * provided with the appropriate device tree for the board.
-		 * Make use of it & search for any machine struct based upon
-		 * the root compatible string.
+		 * We have been provided with the appropriate device tree for
+		 * the board. Make use of it & search for any machine struct
+		 * based upon the root compatible string.
 		 */
 		fdt = (void *)fw_passed_dtb;
 
-- 
2.28.0