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(p4204131-ipxg22701hodogaya.kanagawa.ocn.ne.jp. [153.160.176.131]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-306df06a767sm594492a91.6.2025.04.08.23.12.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Apr 2025 23:12:24 -0700 (PDT) From: FUJITA Tomonori To: richard@nod.at, anton.ivanov@cambridgegreys.com, johannes@sipsolutions.net, linux-um@lists.infradead.org Cc: linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org Subject: [PATCH v1] um: fix incompatible argument type in iounmap() Date: Wed, 9 Apr 2025 15:11:29 +0900 Message-ID: <20250409061129.136788-1-fujita.tomonori@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Align iounmap() signature with other architectures. This fixes the following build error on CONFIG_RUST enabled: In file included from /home/fujita/git/linux-rust/rust/helpers/helpers.c:19: /home/fujita/git/linux-rust/rust/helpers/io.c:12:10: error: passing 'volati= le void *' to parameter of type 'void *' discards qualifiers [-Werror,-Winc= ompatible-pointer-types-discards-qualifiers] 12 | iounmap(addr); | ^~~~ /home/fujita/git/linux-rust/arch/um/include/asm/io.h:19:42: note: passing a= rgument to parameter 'addr' here 19 | static inline void iounmap(void __iomem *addr) | ^ 1 error generated. Fixes: ce30d94e6855 ("rust: add `io::{Io, IoRaw}` base types") Signed-off-by: FUJITA Tomonori --- arch/um/include/asm/io.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/um/include/asm/io.h b/arch/um/include/asm/io.h index 9ea42cc746d9..ce0e8cf4834d 100644 --- a/arch/um/include/asm/io.h +++ b/arch/um/include/asm/io.h @@ -16,7 +16,7 @@ static inline void __iomem *ioremap(phys_addr_t offset, s= ize_t size) =20 #ifndef iounmap #define iounmap iounmap -static inline void iounmap(void __iomem *addr) +static inline void iounmap(volatile void __iomem *addr) { } #endif /* iounmap */ base-commit: c59026c0570a2a97ce2e7d5ae5e9c48fc841542b --=20 2.43.0