From: Anusha Srivatsa <asrivats@redhat.com>
Date: Tue, 4 Mar 2025 21:05:34 +0000 (-0500)
Subject: drm/sprd: move to devm_platform_ioremap_resource() usage
X-Git-Tag: v6.16-rc1~144^2~21^2~226
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=92b8f062a620b1231cc7aef06be871b88b771123;p=thirdparty%2Flinux.git

drm/sprd: move to devm_platform_ioremap_resource() usage

Replace platform_get_resource + devm_ioremap
with just devm_platform_ioremap_resource()

Used Coccinelle to do this change. SmPl patch:
@rule_2@
identifier res;
expression ioremap;
identifier pdev;
@@
-struct resource *res;
...
-res = platform_get_resource(pdev,...);
<...
-if (!res) {
-...
-}
...>
-ioremap = devm_ioremap(...);
+ioremap = devm_platform_ioremap_resource(pdev,0);

v2: Address the return handling properly since
the new API returns error pointers and not NULL.

Cc: Chunyan Zhang <zhang.lyra@gmail.com>
Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>
Reviewed-by: Chunyan Zhang <zhang.lyra@gmail.com>(v1)
Reviewed-by: Maxime Ripard <mripard@kernel.org>(v1)
Link: https://patchwork.freedesktop.org/patch/640854/?series=144073&rev=5
---

diff --git a/drivers/gpu/drm/sprd/sprd_dpu.c b/drivers/gpu/drm/sprd/sprd_dpu.c
index cb2816985305f..a3447622a33cd 100644
--- a/drivers/gpu/drm/sprd/sprd_dpu.c
+++ b/drivers/gpu/drm/sprd/sprd_dpu.c
@@ -784,19 +784,12 @@ static int sprd_dpu_context_init(struct sprd_dpu *dpu,
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct dpu_context *ctx = &dpu->ctx;
-	struct resource *res;
 	int ret;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "failed to get I/O resource\n");
-		return -EINVAL;
-	}
-
-	ctx->base = devm_ioremap(dev, res->start, resource_size(res));
-	if (!ctx->base) {
+	ctx->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(ctx->base)) {
 		dev_err(dev, "failed to map dpu registers\n");
-		return -EFAULT;
+		return PTR_ERR(ctx->base);
 	}
 
 	ctx->irq = platform_get_irq(pdev, 0);
diff --git a/drivers/gpu/drm/sprd/sprd_dsi.c b/drivers/gpu/drm/sprd/sprd_dsi.c
index 8fc26479bb6bc..23b0e1dc547a5 100644
--- a/drivers/gpu/drm/sprd/sprd_dsi.c
+++ b/drivers/gpu/drm/sprd/sprd_dsi.c
@@ -901,18 +901,11 @@ static int sprd_dsi_context_init(struct sprd_dsi *dsi,
 {
 	struct platform_device *pdev = to_platform_device(dev);
 	struct dsi_context *ctx = &dsi->ctx;
-	struct resource *res;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(dev, "failed to get I/O resource\n");
-		return -EINVAL;
-	}
-
-	ctx->base = devm_ioremap(dev, res->start, resource_size(res));
-	if (!ctx->base) {
+	ctx->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(ctx->base)) {
 		drm_err(dsi->drm, "failed to map dsi host registers\n");
-		return -ENXIO;
+		return PTR_ERR(ctx->base);
 	}
 
 	ctx->regmap = devm_regmap_init(dev, &regmap_tst_io, dsi, &byte_config);