* [PATCH] drm/msm/dsi: add missing put_device()
[not found] <20230718083149.17178-1-xujianghui@cdjrlc.com>
@ 2023-07-18 8:33 ` sunran001
2023-07-18 8:35 ` Dmitry Baryshkov
0 siblings, 1 reply; 4+ messages in thread
From: sunran001 @ 2023-07-18 8:33 UTC (permalink / raw)
To: robdclark, quic_abhinavk, dmitry.baryshkov, airlied, daniel
Cc: linux-arm-msm, freedreno, linux-kernel, dri-devel
The of_find_device_by_node() takes a reference to the underlying device
structure, we should release that reference.
Detected by coccinelle with the following ERROR:
./drivers/gpu/drm/msm/dsi/dsi.c:50:1-7: ERROR: missing put_device; call
of_find_device_by_node on line 32, but without a corresponding object
release within this function.
Signed-off-by: Ran Sun <sunran001@208suo.com>
---
drivers/gpu/drm/msm/dsi/dsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c
b/drivers/gpu/drm/msm/dsi/dsi.c
index 81461e8852a7..5e3cc287f0d3 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -46,7 +46,7 @@ static int dsi_get_phy(struct msm_dsi *msm_dsi)
DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n",
__func__);
return -EPROBE_DEFER;
}
- put_device(&pdev->dev);
+ put_device(&phy_pdev->dev);
return 0;
}
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH] drm/msm/dsi: add missing put_device()
2023-07-18 8:33 ` [PATCH] drm/msm/dsi: add missing put_device() sunran001
@ 2023-07-18 8:35 ` Dmitry Baryshkov
0 siblings, 0 replies; 4+ messages in thread
From: Dmitry Baryshkov @ 2023-07-18 8:35 UTC (permalink / raw)
To: sunran001, robdclark, quic_abhinavk, airlied, daniel
Cc: linux-arm-msm, freedreno, linux-kernel, dri-devel
On 18/07/2023 11:33, sunran001@208suo.com wrote:
> The of_find_device_by_node() takes a reference to the underlying device
> structure, we should release that reference.
>
> Detected by coccinelle with the following ERROR:
> ./drivers/gpu/drm/msm/dsi/dsi.c:50:1-7: ERROR: missing put_device; call
> of_find_device_by_node on line 32, but without a corresponding object
> release within this function.
Still NAK, the device should not be put. It is handled in dsi_destroy(),
as I wrote in the previous email. Please stop.
Note, your patch lacks versioning and changelog. Please care to read
Documentation/process/submitting-patches.rst before sending your changes.
>
> Signed-off-by: Ran Sun <sunran001@208suo.com>
> ---
> drivers/gpu/drm/msm/dsi/dsi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
> index 81461e8852a7..5e3cc287f0d3 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi.c
> @@ -46,7 +46,7 @@ static int dsi_get_phy(struct msm_dsi *msm_dsi)
> DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n",
> __func__);
> return -EPROBE_DEFER;
> }
> - put_device(&pdev->dev);
> + put_device(&phy_pdev->dev);
> return 0;
> }
--
With best wishes
Dmitry
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH] drm/msm/dsi: add missing put_device()
2023-07-18 8:13 ` sunran001
@ 2023-07-18 8:15 ` Dmitry Baryshkov
0 siblings, 0 replies; 4+ messages in thread
From: Dmitry Baryshkov @ 2023-07-18 8:15 UTC (permalink / raw)
To: sunran001, robdclark, quic_abhinavk, airlied, daniel
Cc: linux-arm-msm, freedreno, linux-kernel, dri-devel
On 18/07/2023 11:13, sunran001@208suo.com wrote:
> The of_find_device_by_node() takes a reference to the underlying device
> structure, we should release that reference.
>
> Detected by coccinelle with the following ERROR:
> ./drivers/gpu/drm/msm/dsi/dsi.c:50:1-7: ERROR: missing put_device; call
> of_find_device_by_node on line 32, but without a corresponding object
> release within this function.
>
> Signed-off-by: Ran Sun <sunran001@208suo.com>
> ---
> drivers/gpu/drm/msm/dsi/dsi.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/msm/dsi/dsi.c b/drivers/gpu/drm/msm/dsi/dsi.c
> index baab79ab6e74..81461e8852a7 100644
> --- a/drivers/gpu/drm/msm/dsi/dsi.c
> +++ b/drivers/gpu/drm/msm/dsi/dsi.c
> @@ -46,7 +46,7 @@ static int dsi_get_phy(struct msm_dsi *msm_dsi)
> DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n",
> __func__);
> return -EPROBE_DEFER;
> }
> -
> + put_device(&pdev->dev);
NAK. First, you are putting pdev instead of phy_pdev. Next, the
reference to the phy dev is correctly stored and then put in
dsi_destroy(). Please do not make blind patches when reviewing static
analyser warnings.
> return 0;
> }
--
With best wishes
Dmitry
^ permalink raw reply [flat|nested] 4+ messages in thread
* [PATCH] drm/msm/dsi: add missing put_device()
[not found] <20230718081139.16918-1-xujianghui@cdjrlc.com>
@ 2023-07-18 8:13 ` sunran001
2023-07-18 8:15 ` Dmitry Baryshkov
0 siblings, 1 reply; 4+ messages in thread
From: sunran001 @ 2023-07-18 8:13 UTC (permalink / raw)
To: robdclark, quic_abhinavk, dmitry.baryshkov, airlied, daniel
Cc: linux-arm-msm, freedreno, linux-kernel, dri-devel
The of_find_device_by_node() takes a reference to the underlying device
structure, we should release that reference.
Detected by coccinelle with the following ERROR:
./drivers/gpu/drm/msm/dsi/dsi.c:50:1-7: ERROR: missing put_device; call
of_find_device_by_node on line 32, but without a corresponding object
release within this function.
Signed-off-by: Ran Sun <sunran001@208suo.com>
---
drivers/gpu/drm/msm/dsi/dsi.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi.c
b/drivers/gpu/drm/msm/dsi/dsi.c
index baab79ab6e74..81461e8852a7 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.c
+++ b/drivers/gpu/drm/msm/dsi/dsi.c
@@ -46,7 +46,7 @@ static int dsi_get_phy(struct msm_dsi *msm_dsi)
DRM_DEV_ERROR(&pdev->dev, "%s: phy driver is not ready\n",
__func__);
return -EPROBE_DEFER;
}
-
+ put_device(&pdev->dev);
return 0;
}
^ permalink raw reply related [flat|nested] 4+ messages in thread
end of thread, other threads:[~2023-07-18 8:35 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
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2023-07-18 8:33 ` [PATCH] drm/msm/dsi: add missing put_device() sunran001
2023-07-18 8:35 ` Dmitry Baryshkov
[not found] <20230718081139.16918-1-xujianghui@cdjrlc.com>
2023-07-18 8:13 ` sunran001
2023-07-18 8:15 ` Dmitry Baryshkov
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