Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20;
Subject: [PATCH 3/7] mips: asm/io.h: Expect immutable pointer in
 isa_virt_to_bus prototype
From:   Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Cc:     Stanislav Kinsburskii <stanislav.kinsburskii@gmail.com>,
        Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
        Geert Uytterhoeven <geert@linux-m68k.org>,
        Michael Ellerman <mpe@ellerman.id.au>,
        Florian Fainelli <f.fainelli@gmail.com>,
        Arnd Bergmann <arnd@arndb.de>,
        Stanislav Kinsburskii <stanislav.kinsburskii@gmail.com>,
        Jiaxun Yang <jiaxun.yang@flygoat.com>,
        linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org
Date:   Sat, 15 Apr 2023 04:17:36 -0700
Message-ID: <168155745691.13678.14513434425435520788.stgit@skinsburskii.localdomain>
In-Reply-To: <168155718437.13678.714141668943813263.stgit@skinsburskii.localdomain>
References: <168155718437.13678.714141668943813263.stgit@skinsburskii.localdomain>
User-Agent: StGit/0.19
MIME-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit
To:     unlisted-recipients:; (no To-header on input)
Precedence: bulk

From: Stanislav Kinsburskii <stanislav.kinsburskii@gmail.com>

These helper function - isa_virt_to_bus - doesn't need the address pointer to
be mutable.

In the same time expecting it to be mutable leads to the following build
warning for constant pointers:

  warning: passing argument 1 of ‘isa_virt_to_bus’ discards ‘const’ qualifier from pointer target type

Signed-off-by: Stanislav Kinsburskii <stanislav.kinsburskii@gmail.com>
CC: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
CC: Geert Uytterhoeven <geert@linux-m68k.org>
CC: Michael Ellerman <mpe@ellerman.id.au>
CC: Florian Fainelli <f.fainelli@gmail.com>
CC: Arnd Bergmann <arnd@arndb.de>
CC: Stanislav Kinsburskii <stanislav.kinsburskii@gmail.com>
CC: Jiaxun Yang <jiaxun.yang@flygoat.com>
CC: linux-mips@vger.kernel.org
CC: linux-kernel@vger.kernel.org
---
 arch/mips/include/asm/io.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h
index cc28d207a061..d78ca2e71f8c 100644
--- a/arch/mips/include/asm/io.h
+++ b/arch/mips/include/asm/io.h
@@ -137,7 +137,7 @@ static inline void * phys_to_virt(unsigned long address)
 /*
  * ISA I/O bus memory addresses are 1:1 with the physical address.
  */
-static inline unsigned long isa_virt_to_bus(volatile void *address)
+static inline unsigned long isa_virt_to_bus(const volatile void *address)
 {
 	return virt_to_phys(address);
 }