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dma: fsl_raid: use devm_platform_ioremap_resource

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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 <rosenp@gmail.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260716202949.677290-5-rosenp@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Rosen Penev
2026-07-16 13:29:49 -07:00
committed by Vinod Koul
parent 68b7fbc235
commit 30cb1b9fd4
1 changed files with 5 additions and 9 deletions
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14
drivers/dma/fsl_raid.c
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@@ -751,22 +751,18 @@ static int fsl_re_probe(struct platform_device *ofdev)
u32 off;
u8 ridx = 0;
struct dma_device *dma_dev;
struct resource *res;
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_regs = devm_ioremap(dev, res->start, resource_size(res));
if (!re_regs)
return -EBUSY;
re_priv->base = re_regs;
/* Program the RE mode */