From patchwork Wed Dec 22 19:01:31 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar Mahadev Lad X-Patchwork-Id: 527914 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5AC4AC433EF for ; Wed, 22 Dec 2021 19:02:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344986AbhLVTCB (ORCPT ); Wed, 22 Dec 2021 14:02:01 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:26471 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S231511AbhLVTCA (ORCPT ); Wed, 22 Dec 2021 14:02:00 -0500 X-IronPort-AV: E=Sophos;i="5.88,227,1635174000"; d="scan'208";a="104382683" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 23 Dec 2021 04:01:59 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id D650940DF447; Thu, 23 Dec 2021 04:01:56 +0900 (JST) From: Lad Prabhakar To: Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , David Airlie , Daniel Vetter , Krzysztof Kozlowski , dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, linux-samsung-soc@vger.kernel.org Cc: Rob Herring , linux-kernel@vger.kernel.org, Prabhakar , Lad Prabhakar Subject: [PATCH 2/5] drm/exynos: mixer: Use platform_get_irq() to get the interrupt Date: Wed, 22 Dec 2021 19:01:31 +0000 Message-Id: <20211222190134.24866-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211222190134.24866-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211222190134.24866-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org 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 --- Hi, Ideally I would expect the mixer_resources_init() to be called from probe instead from the bind callback. If platform_get_irq() returns -EPROBE_DEFER the bind callback will fail :( Cheers, Prabhakar --- drivers/gpu/drm/exynos/exynos_mixer.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_mixer.c b/drivers/gpu/drm/exynos/exynos_mixer.c index 41c54f1f60bc..e5204be86093 100644 --- a/drivers/gpu/drm/exynos/exynos_mixer.c +++ b/drivers/gpu/drm/exynos/exynos_mixer.c @@ -809,19 +809,17 @@ static int mixer_resources_init(struct mixer_context *mixer_ctx) return -ENXIO; } - res = platform_get_resource(mixer_ctx->pdev, IORESOURCE_IRQ, 0); - if (res == NULL) { - dev_err(dev, "get interrupt resource failed.\n"); - return -ENXIO; - } + ret = platform_get_irq(mixer_ctx->pdev, 0); + if (ret < 0) + return ret; + mixer_ctx->irq = ret; - ret = devm_request_irq(dev, res->start, mixer_irq_handler, - 0, "drm_mixer", mixer_ctx); + ret = devm_request_irq(dev, mixer_ctx->irq, mixer_irq_handler, + 0, "drm_mixer", mixer_ctx); if (ret) { dev_err(dev, "request interrupt failed.\n"); return ret; } - mixer_ctx->irq = res->start; return 0; }