linux-kernel - [PATCH 3.16 36/99] ALSA: sh: Fix compile warning wrt const

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Message-ID: <lsq.1589984008.75685006@decadent.org.uk>
Date:   Wed, 20 May 2020 15:14:04 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>,
        "Takashi Iwai" <tiwai@...e.de>
Subject: [PATCH 3.16 36/99] ALSA: sh: Fix compile warning wrt const

3.16.84-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Takashi Iwai <tiwai@...e.de>

commit f1dd4795b1523fbca7ab4344dd5a8bb439cc770d upstream.

A long-standing compile warning was seen during build test:
  sound/sh/aica.c: In function 'load_aica_firmware':
  sound/sh/aica.c:521:25: warning: passing argument 2 of 'spu_memload' discards 'const' qualifier from pointer target type [-Wdiscarded-qualifiers]

Fixes: 198de43d758c ("[ALSA] Add ALSA support for the SEGA Dreamcast PCM device")
Link: https://lore.kernel.org/r/20200105144823.29547-69-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@...e.de>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 sound/sh/aica.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/sound/sh/aica.c
+++ b/sound/sh/aica.c
@@ -120,10 +120,10 @@ static void spu_memset(u32 toi, u32 what
 }
 
 /* spu_memload - write to SPU address space */
-static void spu_memload(u32 toi, void *from, int length)
+static void spu_memload(u32 toi, const void *from, int length)
 {
 	unsigned long flags;
-	u32 *froml = from;
+	const u32 *froml = from;
 	u32 __iomem *to = (u32 __iomem *) (SPU_MEMORY_BASE + toi);
 	int i;
 	u32 val;