linux-kernel - [PATCH v1] soc: renesas: make ARCH_R9A07G043 depend on !DMA_DIRECT

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Date:   Mon, 11 Dec 2023 22:06:36 +0000
From:   Conor Dooley <conor@...nel.org>
To:     linux-riscv@...ts.infradead.org
Cc:     conor@...nel.org, Conor Dooley <conor.dooley@...rochip.com>,
        Randy Dunlap <rdunlap@...radead.org>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Magnus Damm <magnus.damm@...il.com>,
        Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
        linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] soc: renesas: make ARCH_R9A07G043 depend on !DMA_DIRECT_REMAP

From: Conor Dooley <conor.dooley@...rochip.com>

Randy reported yet another build issue with randconfigs on rv32:
WARNING: unmet direct dependencies detected for DMA_GLOBAL_POOL
  Depends on [n]: !ARCH_HAS_DMA_SET_UNCACHED [=n] && !DMA_DIRECT_REMAP [=y]
  Selected by [y]:
  - ARCH_R9A07G043 [=y] && SOC_RENESAS [=y] && RISCV [=y] && NONPORTABLE [=y] && RISCV_ALTERNATIVE [=y] && !RISCV_ISA_ZICBOM [=n] && RISCV_SBI [=y]

This happens when DMA_DIRECT_REMAP is selected by the T-Head CMO erratum
option and DMA_GLOBAL_POOL is selected by the Andes CMO erratum. Block
selecting the RZ/Five config option, and by extension DMA_GLOBAL_POOL,
if DMA_DIRECT_REMAP has already been enabled.

Fixes: 484861e09f3e ("soc: renesas: Kconfig: Select the required configs for RZ/Five SoC")
Reported-by: Randy Dunlap <rdunlap@...radead.org>
Tested-by: Randy Dunlap <rdunlap@...radead.org> # build-tested
Closes: https://lore.kernel.org/all/24942b4d-d16a-463f-b39a-f9dfcb89d742@infradead.org/
Signed-off-by: Conor Dooley <conor.dooley@...rochip.com>
---
I don't know what the exact fixes tag here is as I did not bisect with
the randconfig, so I blamed the one that added DMA_GLOBAL_POOL.

CC: Geert Uytterhoeven <geert+renesas@...der.be>
CC: Magnus Damm <magnus.damm@...il.com>
CC: Conor Dooley <conor.dooley@...rochip.com>
CC: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
CC: linux-renesas-soc@...r.kernel.org
CC: linux-kernel@...r.kernel.org
---
 drivers/soc/renesas/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/soc/renesas/Kconfig b/drivers/soc/renesas/Kconfig
index 0071864c2111..0986672f6375 100644
--- a/drivers/soc/renesas/Kconfig
+++ b/drivers/soc/renesas/Kconfig
@@ -340,6 +340,7 @@ if RISCV
 config ARCH_R9A07G043
 	bool "RISC-V Platform support for RZ/Five"
 	depends on NONPORTABLE
+	depends on !DMA_DIRECT_REMAP
 	depends on RISCV_ALTERNATIVE
 	depends on !RISCV_ISA_ZICBOM
 	depends on RISCV_SBI
-- 
2.39.2