Hi,
On 4/15/20 9:39 AM, Daniel Vetter wrote:
Upcasting using a container_of macro is more typesafe, faster and
easier for the compiler to optimize.
Acked-by: Sam Ravnborg <sam@xxxxxxxxxxxx>
Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxxx>
Cc: Hans de Goede <hdegoede@xxxxxxxxxx>
LGTM:
Reviewed-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Regards,
Hans
---
drivers/gpu/drm/tiny/gm12u320.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/drivers/gpu/drm/tiny/gm12u320.c b/drivers/gpu/drm/tiny/gm12u320.c
index 907739a67bf6..cc397671f689 100644
--- a/drivers/gpu/drm/tiny/gm12u320.c
+++ b/drivers/gpu/drm/tiny/gm12u320.c
@@ -98,6 +98,8 @@ struct gm12u320_device {
} fb_update;
};
+#define to_gm12u320(__dev) container_of(__dev, struct gm12u320_device, dev)
+
static const char cmd_data[CMD_SIZE] = {
0x55, 0x53, 0x42, 0x43, 0x00, 0x00, 0x00, 0x00,
0x68, 0xfc, 0x00, 0x00, 0x00, 0x00, 0x10, 0xff,
@@ -408,7 +410,7 @@ static void gm12u320_fb_update_work(struct work_struct *work)
static void gm12u320_fb_mark_dirty(struct drm_framebuffer *fb,
struct drm_rect *dirty)
{
- struct gm12u320_device *gm12u320 = fb->dev->dev_private;
+ struct gm12u320_device *gm12u320 = to_gm12u320(fb->dev);
struct drm_framebuffer *old_fb = NULL;
bool wakeup = false;
@@ -558,7 +560,7 @@ static void gm12u320_pipe_enable(struct drm_simple_display_pipe *pipe,
struct drm_plane_state *plane_state)
{
struct drm_rect rect = { 0, 0, GM12U320_USER_WIDTH, GM12U320_HEIGHT };
- struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
+ struct gm12u320_device *gm12u320 = to_gm12u320(pipe->crtc.dev);
gm12u320->fb_update.draw_status_timeout = FIRST_FRAME_TIMEOUT;
gm12u320_fb_mark_dirty(plane_state->fb, &rect);
@@ -566,7 +568,7 @@ static void gm12u320_pipe_enable(struct drm_simple_display_pipe *pipe,
static void gm12u320_pipe_disable(struct drm_simple_display_pipe *pipe)
{
- struct gm12u320_device *gm12u320 = pipe->crtc.dev->dev_private;
+ struct gm12u320_device *gm12u320 = to_gm12u320(pipe->crtc.dev);
gm12u320_stop_fb_update(gm12u320);
}
@@ -641,7 +643,6 @@ static int gm12u320_usb_probe(struct usb_interface *interface,
mutex_init(&gm12u320->fb_update.lock);
dev = &gm12u320->dev;
- dev->dev_private = gm12u320;
ret = drmm_mode_config_init(dev);
if (ret)
@@ -706,7 +707,7 @@ static __maybe_unused int gm12u320_suspend(struct usb_interface *interface,
static __maybe_unused int gm12u320_resume(struct usb_interface *interface)
{
struct drm_device *dev = usb_get_intfdata(interface);
- struct gm12u320_device *gm12u320 = dev->dev_private;
+ struct gm12u320_device *gm12u320 = to_gm12u320(dev);
gm12u320_set_ecomode(gm12u320);
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