linux-kernel - [PATCH v2 2/4] drm/vkms: Switch to dynamic allocation for encoder

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20241122-b4-vkms-allocated-v2-2-ff7bddbf0bfb@bootlin.com>
Date: Fri, 22 Nov 2024 17:35:10 +0100
From: Louis Chauvet <louis.chauvet@...tlin.com>
To: Rodrigo Siqueira <rodrigosiqueiramelo@...il.com>, 
 Maíra Canal <mairacanal@...eup.net>, 
 Haneen Mohammed <hamohammed.sa@...il.com>, 
 Melissa Wen <melissa.srw@...il.com>, 
 Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>, 
 Maxime Ripard <mripard@...nel.org>, Thomas Zimmermann <tzimmermann@...e.de>, 
 David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>, 
 Simona Vetter <simona.vetter@...ll.ch>
Cc: thomas.petazzoni@...tlin.com, dri-devel@...ts.freedesktop.org, 
 linux-kernel@...r.kernel.org, Louis Chauvet <louis.chauvet@...tlin.com>
Subject: [PATCH v2 2/4] drm/vkms: Switch to dynamic allocation for encoder

A specific allocation for the encoder is not strictly necessary  at this
point, but in order to implement dynamic configuration of VKMS (configFS),
it will be easier to have one allocation per encoder.

Signed-off-by: Louis Chauvet <louis.chauvet@...tlin.com>
---
 drivers/gpu/drm/vkms/vkms_drv.h    | 1 -
 drivers/gpu/drm/vkms/vkms_output.c | 7 ++++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h
index 820e7899cb049b45d8bdbe5a0dc7be08eee6db69..19fd99b8e506c4454d7878b67f692a0441c22665 100644
--- a/drivers/gpu/drm/vkms/vkms_drv.h
+++ b/drivers/gpu/drm/vkms/vkms_drv.h
@@ -176,7 +176,6 @@ struct vkms_crtc_state {
  */
 struct vkms_output {
 	struct drm_crtc crtc;
-	struct drm_encoder encoder;
 	struct drm_writeback_connector wb_connector;
 	struct hrtimer vblank_hrtimer;
 	ktime_t period_ns;
diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c
index ec3545730ef79af0db51d8ec605b9cdfff52c2a3..102b6ad466cb4f7c6704f30cea669e5d7f81540a 100644
--- a/drivers/gpu/drm/vkms/vkms_output.c
+++ b/drivers/gpu/drm/vkms/vkms_output.c
@@ -33,7 +33,7 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 	struct vkms_output *output = &vkmsdev->output;
 	struct drm_device *dev = &vkmsdev->drm;
 	struct drm_connector *connector;
-	struct drm_encoder *encoder = &output->encoder;
+	struct drm_encoder *encoder;
 	struct drm_crtc *crtc = &output->crtc;
 	struct vkms_plane *primary, *overlay, *cursor = NULL;
 	int ret;
@@ -86,6 +86,11 @@ int vkms_output_init(struct vkms_device *vkmsdev)
 
 	drm_connector_helper_add(connector, &vkms_conn_helper_funcs);
 
+	encoder = drmm_kzalloc(dev, sizeof(*encoder), GFP_KERNEL);
+	if (!encoder) {
+		DRM_ERROR("Failed to allocate encoder\n");
+		return -ENOMEM;
+	}
 	ret = drmm_encoder_init(dev, encoder, NULL,
 				DRM_MODE_ENCODER_VIRTUAL, NULL);
 	if (ret) {

-- 
2.47.0