linux-kernel - [PATCH] riscv: make t-head erratas depend on MMU

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Message-Id: <20220907154932.2858518-1-heiko@sntech.de>
Date:   Wed,  7 Sep 2022 17:49:32 +0200
From:   Heiko Stuebner <heiko@...ech.de>
To:     paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu
Cc:     samuel@...lland.org, guoren@...nel.org,
        linux-riscv@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Heiko Stuebner <heiko@...ech.de>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH] riscv: make t-head erratas depend on MMU

Both basic extensions of SVPBMT and ZICBOM depend on CONFIG_MMU.
Make the T-Head errata implementations of the similar functionality
also depend on it to prevent build errors.

Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
Fixes: d20ec7529236 ("riscv: implement cache-management errata for T-Head SoCs")
Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Heiko Stuebner <heiko@...ech.de>
---
 arch/riscv/Kconfig.erratas | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/riscv/Kconfig.erratas b/arch/riscv/Kconfig.erratas
index 6850e9389930..f3623df23b5f 100644
--- a/arch/riscv/Kconfig.erratas
+++ b/arch/riscv/Kconfig.erratas
@@ -46,7 +46,7 @@ config ERRATA_THEAD
 
 config ERRATA_THEAD_PBMT
 	bool "Apply T-Head memory type errata"
-	depends on ERRATA_THEAD && 64BIT
+	depends on ERRATA_THEAD && 64BIT && MMU
 	select RISCV_ALTERNATIVE_EARLY
 	default y
 	help
@@ -57,7 +57,7 @@ config ERRATA_THEAD_PBMT
 
 config ERRATA_THEAD_CMO
 	bool "Apply T-Head cache management errata"
-	depends on ERRATA_THEAD
+	depends on ERRATA_THEAD && MMU
 	select RISCV_DMA_NONCOHERENT
 	default y
 	help
-- 
2.35.1