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[104.57.184.186]) by smtp.gmail.com with ESMTPSA id p10sm3682896otf.45.2021.06.28.09.16.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Jun 2021 09:16:48 -0700 (PDT) Date: Mon, 28 Jun 2021 11:16:46 -0500 From: Bjorn Andersson To: "Peng Fan (OSS)" Cc: ohad@wizery.com, mathieu.poirier@linaro.org, o.rempel@pengutronix.de, shawnguo@kernel.org, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, linux-imx@nxp.com, linux-remoteproc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, aisheng.dong@nxp.com, Peng Fan Subject: Re: [PATCH] remoteproc: elf_loader: fix loading segment when is_iomem true Message-ID: References: <20210628070657.7669-1-peng.fan@oss.nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210628070657.7669-1-peng.fan@oss.nxp.com> Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org On Mon 28 Jun 02:06 CDT 2021, Peng Fan (OSS) wrote: > From: Peng Fan > > It seems luckliy work on i.MX platform, but it is wrong. > Need use memcpy_toio, not memcpy_fromio. > > Fixes: 40df0a91b2a52 ("remoteproc: add is_iomem to da_to_va") > Tested-by: Dong Aisheng (i.MX8MQ) > Reported-by: Dong Aisheng > Signed-off-by: Peng Fan > --- > drivers/remoteproc/remoteproc_elf_loader.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/drivers/remoteproc/remoteproc_elf_loader.c b/drivers/remoteproc/remoteproc_elf_loader.c > index 469c52e62faf..e8078efb3dec 100644 > --- 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 *rproc, const struct firmware *fw) > /* 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(ptr, (void __iomem *)(elf_data + offset), filesz); Ouch, we should have caught that during the review, thanks for spotting and fixing this. That said, it's the ptr that's __iomem, so the cast should be on the first parameter, not the second. Regards, Bjorn > else > memcpy(ptr, elf_data + offset, filesz); > } > -- > 2.30.0 >