Applied "ASoC: rcar: dma: remove unnecessary "volatile"" to the asoc tree

Message ID E1coW7Z-0002fF-KU@debutante
State New
Headers show

Commit Message

Mark Brown March 16, 2017, 2:11 p.m.
The patch

   ASoC: rcar: dma: remove unnecessary "volatile"

has been applied to the asoc tree at


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tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

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From 9986943ef5d61a9bea3c86000d91d3b789f0060e Mon Sep 17 00:00:00 2001
From: Kuninori Morimoto <>

Date: Thu, 16 Mar 2017 04:22:09 +0000
Subject: [PATCH] ASoC: rcar: dma: remove unnecessary "volatile"

commit 2a3af642eb20("ASoC: rcar: clear DE bit only in PDMACHCR...")
added rsnd_dmapp_bset(), but it used copy-paste. Thus, it had
unnecessary "volatile", and had below warning on x86.
This patch fix it.

   sound/soc/sh/rcar/dma.c: In function 'rsnd_dmapp_bset':
>> sound/soc/sh/rcar/dma.c:463:21: warning: passing argument 1 of \

   'ioread32' discards 'volatile' qualifier from pointer target \
   type [-Wdiscarded-qualifiers]
     u32 val = ioread32(addr);
   In file included from arch/x86/include/asm/io.h:203:0,
                    from arch/x86/include/asm/realmode.h:5,
                    from arch/x86/include/asm/acpi.h:33,
                    from arch/x86/include/asm/fixmap.h:19,
                    from arch/x86/include/asm/apic.h:10,
                    from arch/x86/include/asm/smp.h:12,
                    from include/linux/smp.h:59,
                    from include/linux/topology.h:33,
                    from include/linux/gfp.h:8,
                    from include/linux/idr.h:16,
                    from include/linux/kernfs.h:14,
                    from include/linux/sysfs.h:15,
                    from include/linux/kobject.h:21,
                    from include/linux/of.h:21,
                    from include/linux/of_dma.h:16,
                    from sound/soc/sh/rcar/dma.c:12:
   include/asm-generic/iomap.h:31:21: note: expected 'void *' \
   but argument is of type 'volatile void *'
    extern unsigned int ioread32(void __iomem *);
Signed-off-by: Kuninori Morimoto <>

Signed-off-by: Mark Brown <>

 sound/soc/sh/rcar/dma.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)


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diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index c2e199b4fcf4..241cb3b08a07 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -459,7 +459,7 @@  static void rsnd_dmapp_bset(struct rsnd_dma *dma, u32 data, u32 mask, u32 reg)
 	struct rsnd_mod *mod = rsnd_mod_get(dma);
 	struct rsnd_priv *priv = rsnd_mod_to_priv(mod);
 	struct rsnd_dma_ctrl *dmac = rsnd_priv_to_dmac(priv);
-	volatile void __iomem *addr = rsnd_dmapp_addr(dmac, dma, reg);
+	void __iomem *addr = rsnd_dmapp_addr(dmac, dma, reg);
 	u32 val = ioread32(addr);
 	val &= ~mask;