linux-kernel - [PATCH] sh: j2: Use ioremap() to translate device tree address into kernel memory

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Date:   Wed,  3 May 2023 14:57:41 +0200
From:   John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To:     unlisted-recipients:; (no To-header on input)
Cc:     John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>, linux-sh@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] sh: j2: Use ioremap() to translate device tree address into kernel memory

Addresses the following warning when building j2_defconfig:

arch/sh/kernel/cpu/sh2/probe.c: In function 'scan_cache':
arch/sh/kernel/cpu/sh2/probe.c:24:16: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
   24 |  j2_ccr_base = (u32 __iomem *)of_flat_dt_translate_address(node);
      |

Signed-off-by: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
---
 arch/sh/kernel/cpu/sh2/probe.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/kernel/cpu/sh2/probe.c b/arch/sh/kernel/cpu/sh2/probe.c
index d342ea08843f..70a07f4f2142 100644
--- a/arch/sh/kernel/cpu/sh2/probe.c
+++ b/arch/sh/kernel/cpu/sh2/probe.c
@@ -21,7 +21,7 @@ static int __init scan_cache(unsigned long node, const char *uname,
 	if (!of_flat_dt_is_compatible(node, "jcore,cache"))
 		return 0;
 
-	j2_ccr_base = (u32 __iomem *)of_flat_dt_translate_address(node);
+	j2_ccr_base = ioremap(of_flat_dt_translate_address(node), 4);
 
 	return 1;
 }
-- 
2.39.2