diff mbox series

[5/5] drm/exynos: gsc: Use platform_get_irq() to get the interrupt

Message ID 20211222190134.24866-6-prabhakar.mahadev-lad.rj@bp.renesas.com
State New
Headers show
Series drm/exynos: Use platform_get_irq*() variants to fetch IRQ's | expand

Commit Message

Prabhakar Mahadev Lad Dec. 22, 2021, 7:01 p.m. UTC
platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypassed the hierarchical setup and messed up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq().

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
---
 drivers/gpu/drm/exynos/exynos_drm_gsc.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/exynos/exynos_drm_gsc.c b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
index 166a80262896..964dceb28c1e 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gsc.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gsc.c
@@ -1220,7 +1220,6 @@  static int gsc_probe(struct platform_device *pdev)
 	struct gsc_driverdata *driver_data;
 	struct exynos_drm_ipp_formats *formats;
 	struct gsc_context *ctx;
-	struct resource *res;
 	int num_formats, ret, i, j;
 
 	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
@@ -1275,13 +1274,10 @@  static int gsc_probe(struct platform_device *pdev)
 		return PTR_ERR(ctx->regs);
 
 	/* resource irq */
-	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res) {
-		dev_err(dev, "failed to request irq resource.\n");
-		return -ENOENT;
-	}
+	ctx->irq = platform_get_irq(pdev, 0);
+	if (ctx->irq < 0)
+		return ctx->irq;
 
-	ctx->irq = res->start;
 	ret = devm_request_irq(dev, ctx->irq, gsc_irq_handler, 0,
 			       dev_name(dev), ctx);
 	if (ret < 0) {