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Tue, 14 Jul 2026 16:39:01 -0700 (PDT) From: Rosen Penev To: dmaengine@vger.kernel.org Cc: Vinod Koul , Frank Li , linux-kernel@vger.kernel.org (open list) Subject: [PATCH 3/3] dma: fsl_raid: use devm_platform_ioremap_resource Date: Tue, 14 Jul 2026 16:38:55 -0700 Message-ID: <20260714233855.870797-4-rosenp@gmail.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260714233855.870797-1-rosenp@gmail.com> References: <20260714233855.870797-1-rosenp@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Replace the open-coded platform_get_resource() plus devm_ioremap() sequence with devm_platform_ioremap_resource(), which fetches the resource, requests the region and maps it in one call. Switch the error check to IS_ERR()/PTR_ERR() and drop the now-unused struct resource pointer. The raideng node has a single reg region (0x320000, 0x10000); the job-queue/ring children are separate OF devices probed independently, so the region reservation added by devm_ioremap_resource() is exclusive and does not introduce overlap failures. Assisted-by: opencode:hy3-free Signed-off-by: Rosen Penev --- drivers/dma/fsl_raid.c | 16 ++++++---------- 1 file changed, 6 insertions(+), 10 deletions(-) diff --git a/drivers/dma/fsl_raid.c b/drivers/dma/fsl_raid.c index 47ebdf274331..aadb3dcb1b03 100644 --- a/drivers/dma/fsl_raid.c +++ b/drivers/dma/fsl_raid.c @@ -747,24 +747,20 @@ static int fsl_re_probe(struct platform_device *ofdev) u32 off; u8 ridx = 0; struct dma_device *dma_dev; - struct resource *res; struct fsl_re_ctrl __iomem *re_regs; int rc; struct device *dev = &ofdev->dev; + /* IOMAP the entire RAID Engine region */ + re_regs = devm_platform_ioremap_resource(ofdev, 0); + if (IS_ERR(re_regs)) + return PTR_ERR(re_regs); + re_priv = devm_kzalloc(dev, sizeof(*re_priv), GFP_KERNEL); if (!re_priv) return -ENOMEM; - res = platform_get_resource(ofdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; - - /* IOMAP the entire RAID Engine region */ - re_priv->re_regs = devm_ioremap(dev, res->start, resource_size(res)); - if (!re_priv->re_regs) - return -EBUSY; - re_regs = re_priv->re_regs; + re_priv->re_regs = re_regs; /* Program the RE mode */ out_be32(&re_regs->global_config, FSL_RE_NON_DPAA_MODE); -- 2.55.0