From: Anusha Srivatsa <asrivats@redhat.com>
To: Neil Armstrong <neil.armstrong@linaro.org>,
Jessica Zhang <quic_jesszhan@quicinc.com>,
Maarten Lankhorst <maarten.lankhorst@linux.intel.com>,
Maxime Ripard <mripard@kernel.org>,
Thomas Zimmermann <tzimmermann@suse.de>,
David Airlie <airlied@gmail.com>,
Simona Vetter <simona@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Luca Ceresoli <luca.ceresoli@bootlin.com>,
Anusha Srivatsa <asrivats@redhat.com>
Subject: [PATCH 3/5] drm/panel: get/put panel reference in drm_panel_add/remove()
Date: Tue, 25 Mar 2025 13:24:10 -0400 [thread overview]
Message-ID: <20250325-b4-panel-refcounting-v1-3-4e2bf5d19c5d@redhat.com> (raw)
In-Reply-To: <20250325-b4-panel-refcounting-v1-0-4e2bf5d19c5d@redhat.com>
Take the panel reference and put it back as required
using the helpers introduced in previous patch.
drm_panel_add() and drm_panel_remove()
add a panel to the global registry and removes a panel
respectively, use get() and put() helpers to keep up
with refcounting.
Signed-off-by: Anusha Srivatsa <asrivats@redhat.com>
---
drivers/gpu/drm/drm_panel.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c
index 079c3c666a2ddc99a0051d1a3c9ba65d986dd003..11a0415bc61f59190ef5eb378d1583c493265e6a 100644
--- a/drivers/gpu/drm/drm_panel.c
+++ b/drivers/gpu/drm/drm_panel.c
@@ -79,6 +79,7 @@ EXPORT_SYMBOL(drm_panel_init);
*/
void drm_panel_add(struct drm_panel *panel)
{
+ drm_panel_get(panel);
mutex_lock(&panel_lock);
list_add_tail(&panel->list, &panel_list);
mutex_unlock(&panel_lock);
@@ -96,6 +97,7 @@ void drm_panel_remove(struct drm_panel *panel)
mutex_lock(&panel_lock);
list_del_init(&panel->list);
mutex_unlock(&panel_lock);
+ drm_panel_put(panel);
}
EXPORT_SYMBOL(drm_panel_remove);
--
2.48.1
next prev parent reply other threads:[~2025-03-25 17:24 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-25 17:24 [PATCH 0/5] drm/panel: Panel Refcounting infrastructure Anusha Srivatsa
2025-03-25 17:24 ` [PATCH 1/5] drm/panel: Add new helpers for refcounted panel allocatons Anusha Srivatsa
2025-03-26 9:22 ` Luca Ceresoli
2025-03-26 15:26 ` Maxime Ripard
2025-03-26 15:25 ` Maxime Ripard
2025-03-25 17:24 ` [PATCH 2/5] drm/panel: Add refcount support Anusha Srivatsa
2025-03-26 1:21 ` kernel test robot
2025-03-26 9:23 ` Luca Ceresoli
2025-03-26 15:30 ` Maxime Ripard
2025-03-26 15:28 ` Maxime Ripard
2025-03-25 17:24 ` Anusha Srivatsa [this message]
2025-03-26 0:18 ` [PATCH 3/5] drm/panel: get/put panel reference in drm_panel_add/remove() kernel test robot
2025-03-26 4:35 ` kernel test robot
2025-03-26 9:23 ` Luca Ceresoli
2025-03-26 15:31 ` Maxime Ripard
2025-03-25 17:24 ` [PATCH 4/5] drm/panel: deprecate old-style panel allocation Anusha Srivatsa
2025-03-26 9:23 ` Luca Ceresoli
2025-03-26 15:32 ` Maxime Ripard
2025-03-25 17:24 ` [PATCH 5/5] drm/panel/panel-simple: Use the new allocation in place of devm_kzalloc() Anusha Srivatsa
2025-03-26 9:23 ` Luca Ceresoli
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