From: Hyun Kwon <hyun.kwon@xilinx.com>
To: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Intel Graphics Development <intel-gfx@lists.freedesktop.org>,
DRI Development <dri-devel@lists.freedesktop.org>,
Michal Simek <michals@xilinx.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Daniel Vetter <daniel.vetter@intel.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH] drm/xlnx: Use devm_drm_dev_alloc
Date: Tue, 8 Sep 2020 12:16:00 -0700 [thread overview]
Message-ID: <20200908191600.GA1569998@xilinx.com> (raw)
In-Reply-To: <20200907082225.150837-1-daniel.vetter@ffwll.ch>
Hi Daniel,
On Mon, Sep 07, 2020 at 01:22:25AM -0700, Daniel Vetter wrote:
> Gets rid of drmm_add_final_kfree, which I want to unexport so that it
> stops confusion people about this transitional state of rolling drm
> managed memory out.
>
> This also fixes the missing drm_dev_put in the error path of the probe
> code.
>
> v2: Drop the misplaced drm_dev_put from zynqmp_dpsub_drm_init (all
> other paths leaked on error, this should have been in
> zynqmp_dpsub_probe), now that subsumed by the auto-cleanup of
> devm_drm_dev_alloc.
>
> Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
> Cc: Hyun Kwon <hyun.kwon@xilinx.com>
> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Cc: Michal Simek <michal.simek@xilinx.com>
> Cc: linux-arm-kernel@lists.infradead.org
Looks correct to me.
Reviewed-by: Hyun Kwon <hyun.kwon@xilinx.com>
Thanks!
-hyun
> ---
> drivers/gpu/drm/xlnx/zynqmp_dpsub.c | 27 ++++++---------------------
> 1 file changed, 6 insertions(+), 21 deletions(-)
>
> diff --git a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
> index 26328c76305b..8e69303aad3f 100644
> --- a/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
> +++ b/drivers/gpu/drm/xlnx/zynqmp_dpsub.c
> @@ -111,7 +111,7 @@ static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
> /* Initialize mode config, vblank and the KMS poll helper. */
> ret = drmm_mode_config_init(drm);
> if (ret < 0)
> - goto err_dev_put;
> + return ret;
>
> drm->mode_config.funcs = &zynqmp_dpsub_mode_config_funcs;
> drm->mode_config.min_width = 0;
> @@ -121,7 +121,7 @@ static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
>
> ret = drm_vblank_init(drm, 1);
> if (ret)
> - goto err_dev_put;
> + return ret;
>
> drm->irq_enabled = 1;
>
> @@ -154,8 +154,6 @@ static int zynqmp_dpsub_drm_init(struct zynqmp_dpsub *dpsub)
>
> err_poll_fini:
> drm_kms_helper_poll_fini(drm);
> -err_dev_put:
> - drm_dev_put(drm);
> return ret;
> }
>
> @@ -208,27 +206,16 @@ static int zynqmp_dpsub_probe(struct platform_device *pdev)
> int ret;
>
> /* Allocate private data. */
> - dpsub = kzalloc(sizeof(*dpsub), GFP_KERNEL);
> - if (!dpsub)
> - return -ENOMEM;
> + dpsub = devm_drm_dev_alloc(&pdev->dev, &zynqmp_dpsub_drm_driver,
> + struct zynqmp_dpsub, drm);
> + if (IS_ERR(dpsub))
> + return PTR_ERR(dpsub);
>
> dpsub->dev = &pdev->dev;
> platform_set_drvdata(pdev, dpsub);
>
> dma_set_mask(dpsub->dev, DMA_BIT_MASK(ZYNQMP_DISP_MAX_DMA_BIT));
>
> - /*
> - * Initialize the DRM device early, as the DRM core mandates usage of
> - * the managed memory helpers tied to the DRM device.
> - */
> - ret = drm_dev_init(&dpsub->drm, &zynqmp_dpsub_drm_driver, &pdev->dev);
> - if (ret < 0) {
> - kfree(dpsub);
> - return ret;
> - }
> -
> - drmm_add_final_kfree(&dpsub->drm, dpsub);
> -
> /* Try the reserved memory. Proceed if there's none. */
> of_reserved_mem_device_init(&pdev->dev);
>
> @@ -286,8 +273,6 @@ static int zynqmp_dpsub_remove(struct platform_device *pdev)
> clk_disable_unprepare(dpsub->apb_clk);
> of_reserved_mem_device_release(&pdev->dev);
>
> - drm_dev_put(drm);
> -
> return 0;
> }
>
> --
> 2.28.0
>
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next prev parent reply other threads:[~2020-09-08 19:16 UTC|newest]
Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-04 14:39 [PATCH 00/24] drm_managed, leftovers Daniel Vetter
2020-09-04 14:39 ` [PATCH 01/24] drm/armada: Use devm_drm_dev_alloc Daniel Vetter
2020-09-10 1:20 ` Dave Airlie
2020-09-04 14:39 ` [PATCH 02/24] drm/armada: Don't use drm_device->dev_private Daniel Vetter
2020-09-04 14:39 ` [PATCH 03/24] drm/aspeed: Use managed drmm_mode_config_cleanup Daniel Vetter
2020-09-04 14:39 ` [PATCH 04/24] drm/vgem: Use devm_drm_dev_alloc Daniel Vetter
2020-09-09 11:01 ` Melissa Wen
2020-09-09 11:20 ` Daniel Vetter
2020-09-09 16:29 ` Melissa Wen
2020-09-09 12:07 ` [PATCH] " Daniel Vetter
2020-09-04 14:39 ` [PATCH 05/24] drm/vkms: " Daniel Vetter
2020-09-08 23:42 ` Melissa Wen
2020-09-09 9:18 ` [PATCH] " Daniel Vetter
2020-09-09 9:22 ` Melissa Wen
2020-09-04 14:39 ` [PATCH 06/24] drm/xlnx: " Daniel Vetter
2020-09-07 8:22 ` [PATCH] " Daniel Vetter
2020-09-08 19:16 ` Hyun Kwon [this message]
2020-09-11 8:47 ` Daniel Vetter
2020-09-04 14:39 ` [PATCH 07/24] drm/i915/selftest: Create mock_destroy_device Daniel Vetter
2020-09-04 14:39 ` [PATCH 08/24] drm/i915/selftests: align more to real device lifetimes Daniel Vetter
2020-09-11 8:59 ` [Intel-gfx] " Maarten Lankhorst
2020-09-11 9:08 ` Matthew Auld
2020-09-04 14:39 ` [PATCH 09/24] drm/dev: Remove drm_dev_init Daniel Vetter
2020-09-04 14:39 ` [PATCH 10/24] drm/arc: Switch to devm_drm_dev_alloc Daniel Vetter
2020-10-23 12:31 ` Daniel Vetter
2020-09-04 14:39 ` [PATCH 11/24] drm/arc: Stop using drm_device->dev_private Daniel Vetter
2020-09-04 15:09 ` Daniel Vetter
2020-09-04 14:39 ` [PATCH 12/24] drm/arc: Delete arcpgu_priv->fb Daniel Vetter
2020-09-04 14:39 ` [PATCH 13/24] drm/arc: Embedded a drm_simple_display_pipe Daniel Vetter
2020-09-04 14:39 ` [PATCH 14/24] drm/arc: Embedd a drm_connector for sim case Daniel Vetter
2020-09-04 14:39 ` [PATCH 15/24] drm/arc: Drop surplus connector registration Daniel Vetter
2020-09-04 14:39 ` [PATCH 16/24] drm/arc: Use drmm_mode_config_cleanup Daniel Vetter
2020-09-04 14:39 ` [PATCH 17/24] drm/arc: Align with simple pipe helpers Daniel Vetter
2020-09-04 14:39 ` [PATCH 18/24] drm/arc: Convert to drm_simple_kms_pipe_helper Daniel Vetter
2020-09-04 14:39 ` [PATCH 19/24] drm/arc: Drop crtc check in arc_pgu_update Daniel Vetter
2020-09-04 14:39 ` [PATCH 20/24] drm/arc: Inline arcpgu_crtc.c Daniel Vetter
2020-09-04 14:39 ` [PATCH 21/24] drm/arc: Inline arcpgu_drm_hdmi_init Daniel Vetter
2020-09-04 14:39 ` [PATCH 22/24] drm/arc: Inline remaining files Daniel Vetter
2020-09-04 14:39 ` [PATCH 23/24] drm/arc: Initialize sim connector before display pipe Daniel Vetter
2020-09-04 14:39 ` [PATCH 24/24] drm/arc: Move to drm/tiny Daniel Vetter
2020-09-09 7:54 ` Thomas Zimmermann
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