linux-kernel - [PATCH] remoteproc: imx_dsp_rproc: Fix kernel test robot sparse warning

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Date:   Fri,  7 Apr 2023 10:14:29 -0600
From:   Mathieu Poirier <mathieu.poirier@...aro.org>
To:     iuliana.prodan@....com, andersson@...nel.org
Cc:     linux-remoteproc@...r.kernel.org, shawnguo@...nel.org,
        s.hauer@...gutronix.de, kernel@...gutronix.de, festevam@...il.com,
        linux-imx@....com, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] remoteproc: imx_dsp_rproc: Fix kernel test robot sparse warning

This patch fixes the kernel test robot warning reported here:

https://lore.kernel.org/bpf/642f916b.pPIKZ%2Fl%2F%2Fbw8tvIH%25lkp@intel.com/T/

Fixes: 408ec1ff0caa ("remoteproc: imx_dsp_rproc: Add custom memory copy implementation for i.MX DSP Cores")
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
---

Iuliana - please thest this on your side

---
 drivers/remoteproc/imx_dsp_rproc.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/remoteproc/imx_dsp_rproc.c b/drivers/remoteproc/imx_dsp_rproc.c
index 21759d9e5b7b..c805cb83cacc 100644
--- a/drivers/remoteproc/imx_dsp_rproc.c
+++ b/drivers/remoteproc/imx_dsp_rproc.c
@@ -750,12 +750,12 @@ static void imx_dsp_rproc_kick(struct rproc *rproc, int vqid)
  * The IRAM is part of the HiFi DSP.
  * According to hw specs only 32-bits writes are allowed.
  */
-static int imx_dsp_rproc_memcpy(void *dest, const void *src, size_t size)
+static int imx_dsp_rproc_memcpy(void *dst, const void *src, size_t size)
 {
+	void __iomem *dest = (void __iomem *)dst;
 	const u8 *src_byte = src;
 	const u32 *source = src;
 	u32 affected_mask;
-	u32 *dst = dest;
 	int i, q, r;
 	u32 tmp;
 
@@ -768,7 +768,7 @@ static int imx_dsp_rproc_memcpy(void *dest, const void *src, size_t size)
 
 	/* copy data in units of 32 bits at a time */
 	for (i = 0; i < q; i++)
-		writel(source[i], &dst[i]);
+		writel(source[i], dest + i * 4);
 
 	if (r) {
 		affected_mask = GENMASK(8 * r, 0);
@@ -799,8 +799,8 @@ static int imx_dsp_rproc_memcpy(void *dest, const void *src, size_t size)
  */
 static int imx_dsp_rproc_memset(void *addr, u8 value, size_t size)
 {
+	void __iomem *tmp_dst = (void __iomem *)addr;
 	u32 tmp_val = value;
-	u32 *tmp_dst = addr;
 	u32 affected_mask;
 	int q, r;
 	u32 tmp;
-- 
2.25.1