linux-kernel - [PATCH 5.15 892/917] remoteproc: elf_loader: Fix loading segment when is

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Date:   Mon, 15 Nov 2021 18:06:27 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, kernel test robot <lkp@...el.com>,
        Dong Aisheng <aisheng.dong@....com>,
        Peng Fan <peng.fan@....com>,
        Mathieu Poirier <mathieu.poirier@...aro.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>
Subject: [PATCH 5.15 892/917] remoteproc: elf_loader: Fix loading segment when is_iomem true

From: Peng Fan <peng.fan@....com>

commit 24acbd9dc934f5d9418a736c532d3970a272063e upstream.

It seems luckliy work on i.MX platform, but it is wrong.
Need use memcpy_toio, not memcpy_fromio.

Fixes: 40df0a91b2a5 ("remoteproc: add is_iomem to da_to_va")
Tested-by: Dong Aisheng <aisheng.dong@....com> (i.MX8MQ)
Reported-by: kernel test robot <lkp@...el.com>
Reported-by: Dong Aisheng <aisheng.dong@....com>
Signed-off-by: Peng Fan <peng.fan@....com>
Cc: stable <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20210910090621.3073540-2-peng.fan@oss.nxp.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@...aro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/remoteproc/remoteproc_elf_loader.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/remoteproc/remoteproc_elf_loader.c
+++ b/drivers/remoteproc/remoteproc_elf_loader.c
@@ -220,7 +220,7 @@ int rproc_elf_load_segments(struct rproc
 		/* put the segment where the remote processor expects it */
 		if (filesz) {
 			if (is_iomem)
-				memcpy_fromio(ptr, (void __iomem *)(elf_data + offset), filesz);
+				memcpy_toio((void __iomem *)ptr, elf_data + offset, filesz);
 			else
 				memcpy(ptr, elf_data + offset, filesz);
 		}