drm/bochs: Allocate DRM device in struct bochs_device

Allocate an instance of struct drm_device in struct bochs_device. Also
remove all uses of dev_private from bochs and upcast from the embedded
instance if necessary.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240902105546.792625-7-tzimmermann@suse.de

diff --git a/drivers/gpu/drm/tiny/bochs.c b/drivers/gpu/drm/tiny/bochs.c
index 61b2b7aa03cbb5b7dcd842115fc1c28f19c061f1..5679f1b090af0799f5178215e34a021518729a1f 100644 (file)
--- a/drivers/gpu/drm/tiny/bochs.c
+++ b/drivers/gpu/drm/tiny/bochs.c
@@ -71,6 +71,8 @@ enum bochs_types {
 };
 
 struct bochs_device {
+       struct drm_device dev;
+
        /* hw */
        void __iomem   *mmio;
        int            ioports;
@@ -87,14 +89,13 @@ struct bochs_device {
        u32 bpp;
 
        /* drm */
-       struct drm_device *dev;
        struct drm_simple_display_pipe pipe;
        struct drm_connector connector;
 };
 
 static struct bochs_device *to_bochs_device(const struct drm_device *dev)
 {
-       return (struct bochs_device *)dev->dev_private;
+       return container_of(dev, struct bochs_device, dev);
 }
 
 /* ---------------------------------------------------------------------- */
@@ -211,7 +212,7 @@ static const struct drm_edid *bochs_hw_read_edid(struct drm_connector *connector
 
 static int bochs_hw_init(struct bochs_device *bochs)
 {
-       struct drm_device *dev = bochs->dev;
+       struct drm_device *dev = &bochs->dev;
        struct pci_dev *pdev = to_pci_dev(dev->dev);
        unsigned long addr, size, mem, ioaddr, iosize;
        u16 id;
@@ -306,7 +307,7 @@ static void bochs_hw_setmode(struct bochs_device *bochs, struct drm_display_mode
 {
        int idx;
 
-       if (!drm_dev_enter(bochs->dev, &idx))
+       if (!drm_dev_enter(&bochs->dev, &idx))
                return;
 
        bochs->xres = mode->hdisplay;
@@ -342,7 +343,7 @@ static void bochs_hw_setformat(struct bochs_device *bochs, const struct drm_form
 {
        int idx;
 
-       if (!drm_dev_enter(bochs->dev, &idx))
+       if (!drm_dev_enter(&bochs->dev, &idx))
                return;
 
        DRM_DEBUG_DRIVER("format %c%c%c%c\n",
@@ -373,7 +374,7 @@ static void bochs_hw_setbase(struct bochs_device *bochs, int x, int y, int strid
        unsigned long offset;
        unsigned int vx, vy, vwidth, idx;
 
-       if (!drm_dev_enter(bochs->dev, &idx))
+       if (!drm_dev_enter(&bochs->dev, &idx))
                return;
 
        bochs->stride = stride;
@@ -488,7 +489,7 @@ static const struct drm_connector_funcs bochs_connector_connector_funcs = {
 
 static void bochs_connector_init(struct bochs_device *bochs)
 {
-       struct drm_device *dev = bochs->dev;
+       struct drm_device *dev = &bochs->dev;
        struct drm_connector *connector = &bochs->connector;
 
        drm_connector_init(dev, connector, &bochs_connector_connector_funcs,
@@ -506,23 +507,24 @@ static const struct drm_mode_config_funcs bochs_mode_funcs = {
 
 static int bochs_kms_init(struct bochs_device *bochs)
 {
+       struct drm_device *dev = &bochs->dev;
        int ret;
 
-       ret = drmm_mode_config_init(bochs->dev);
+       ret = drmm_mode_config_init(dev);
        if (ret)
                return ret;
 
-       bochs->dev->mode_config.max_width = 8192;
-       bochs->dev->mode_config.max_height = 8192;
+       dev->mode_config.max_width = 8192;
+       dev->mode_config.max_height = 8192;
 
-       bochs->dev->mode_config.preferred_depth = 24;
-       bochs->dev->mode_config.prefer_shadow = 0;
-       bochs->dev->mode_config.quirk_addfb_prefer_host_byte_order = true;
+       dev->mode_config.preferred_depth = 24;
+       dev->mode_config.prefer_shadow = 0;
+       dev->mode_config.quirk_addfb_prefer_host_byte_order = true;
 
-       bochs->dev->mode_config.funcs = &bochs_mode_funcs;
+       dev->mode_config.funcs = &bochs_mode_funcs;
 
        bochs_connector_init(bochs);
-       drm_simple_display_pipe_init(bochs->dev,
+       drm_simple_display_pipe_init(dev,
                                     &bochs->pipe,
                                     &bochs_pipe_funcs,
                                     bochs_formats,
@@ -530,7 +532,7 @@ static int bochs_kms_init(struct bochs_device *bochs)
                                     NULL,
                                     &bochs->connector);
 
-       drm_mode_config_reset(bochs->dev);
+       drm_mode_config_reset(dev);
 
        return 0;
 }
@@ -538,17 +540,11 @@ static int bochs_kms_init(struct bochs_device *bochs)
 /* ---------------------------------------------------------------------- */
 /* drm interface                                                          */
 
-static int bochs_load(struct drm_device *dev)
+static int bochs_load(struct bochs_device *bochs)
 {
-       struct bochs_device *bochs;
+       struct drm_device *dev = &bochs->dev;
        int ret;
 
-       bochs = drmm_kzalloc(dev, sizeof(*bochs), GFP_KERNEL);
-       if (bochs == NULL)
-               return -ENOMEM;
-       dev->dev_private = bochs;
-       bochs->dev = dev;
-
        ret = bochs_hw_init(bochs);
        if (ret)
                return ret;
@@ -606,6 +602,7 @@ static const struct dev_pm_ops bochs_pm_ops = {
 
 static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 {
+       struct bochs_device *bochs;
        struct drm_device *dev;
        unsigned long fbsize;
        int ret;
@@ -620,9 +617,10 @@ static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent
        if (ret)
                return ret;
 
-       dev = drm_dev_alloc(&bochs_driver, &pdev->dev);
-       if (IS_ERR(dev))
+       bochs = devm_drm_dev_alloc(&pdev->dev, &bochs_driver, struct bochs_device, dev);
+       if (IS_ERR(bochs))
                return PTR_ERR(dev);
+       dev = &bochs->dev;
 
        ret = pcim_enable_device(pdev);
        if (ret)
@@ -630,7 +628,7 @@ static int bochs_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent
 
        pci_set_drvdata(pdev, dev);
 
-       ret = bochs_load(dev);
+       ret = bochs_load(bochs);
        if (ret)
                goto err_free_dev;