From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 814D3125DF for ; Mon, 8 May 2023 10:18:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0583BC4339B; Mon, 8 May 2023 10:18:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1683541133; bh=Nhkt5pijSeEMJN2dJ99XtCmUeNJrKaNNXYb9he2rH3E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=PHkyOoi54T2c75jiZABlRZgNZwioXmxEHhsAYEVJn2sXAtwGloUCK93ZYpcmArzo4 X3fIjnJ1rKh5etOp2xnlZ8ZOn6z9rNqt67w6yHojj8v8gIuJdiu7j+IZTZ3XT6R42c IEsk0mHCXW7S2ujr+hJrABOTLxwRv2G/p/Q8P7P4= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Arnd Bergmann , Vladimir Oltean , Jonathan Cameron , Sasha Levin Subject: [PATCH 6.2 017/663] asm-generic/io.h: suppress endianness warnings for readq() and writeq() Date: Mon, 8 May 2023 11:37:23 +0200 Message-Id: <20230508094428.984590997@linuxfoundation.org> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230508094428.384831245@linuxfoundation.org> References: <20230508094428.384831245@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Vladimir Oltean [ Upstream commit d564fa1ff19e893e2971d66e5c8f49dc1cdc8ffc ] Commit c1d55d50139b ("asm-generic/io.h: Fix sparse warnings on big-endian architectures") missed fixing the 64-bit accessors. Arnd explains in the attached link why the casts are necessary, even if __raw_readq() and __raw_writeq() do not take endian-specific types. Link: https://lore.kernel.org/lkml/9105d6fc-880b-4734-857d-e3d30b87ccf6@app.fastmail.com/ Suggested-by: Arnd Bergmann Signed-off-by: Vladimir Oltean Reviewed-by: Jonathan Cameron Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin --- include/asm-generic/io.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/include/asm-generic/io.h b/include/asm-generic/io.h index 4c44a29b5e8ef..d78c3056c98f9 100644 --- a/include/asm-generic/io.h +++ b/include/asm-generic/io.h @@ -236,7 +236,7 @@ static inline u64 readq(const volatile void __iomem *addr) log_read_mmio(64, addr, _THIS_IP_, _RET_IP_); __io_br(); - val = __le64_to_cpu(__raw_readq(addr)); + val = __le64_to_cpu((__le64 __force)__raw_readq(addr)); __io_ar(val); log_post_read_mmio(val, 64, addr, _THIS_IP_, _RET_IP_); return val; @@ -287,7 +287,7 @@ static inline void writeq(u64 value, volatile void __iomem *addr) { log_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); __io_bw(); - __raw_writeq(__cpu_to_le64(value), addr); + __raw_writeq((u64 __force)__cpu_to_le64(value), addr); __io_aw(); log_post_write_mmio(value, 64, addr, _THIS_IP_, _RET_IP_); } -- 2.39.2