From: Shengjiu Wang <shengjiu.wang@nxp.com>
Date: Wed, 26 Nov 2025 06:45:09 +0000 (+0800)
Subject: ASoC: fsl_xcvr: clear the channel status control memory
X-Git-Tag: v5.15.198~403
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=212825c1c8cb6110956a8ac8a38f3635b2e11ca7;p=thirdparty%2Fkernel%2Fstable.git

ASoC: fsl_xcvr: clear the channel status control memory

[ Upstream commit 73b97d46dde64fa184d47865d4a532d818c3a007 ]

memset_io() writes memory byte by byte with __raw_writeb() on the arm
platform if the size is word. but XCVR data RAM memory can't be accessed
with byte address, so with memset_io() the channel status control memory
is not really cleared, use writel_relaxed() instead.

Fixes: 28564486866f ("ASoC: fsl_xcvr: Add XCVR ASoC CPU DAI driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://patch.msgid.link/20251126064509.1900974-1-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index 3fee1aa03363b..8065fa5c95e10 100644
--- a/sound/soc/fsl/fsl_xcvr.c
+++ b/sound/soc/fsl/fsl_xcvr.c
@@ -1163,7 +1163,7 @@ static irqreturn_t irq0_isr(int irq, void *devid)
 						bitrev32(val);
 				}
 				/* clear CS control register */
-				memset_io(reg_ctrl, 0, sizeof(val));
+				writel_relaxed(0, reg_ctrl);
 			}
 		}
 	}