drm/panel/novatek-nt37700f: Use refcounted allocation in place of devm_kzalloc()

Move to using the new API devm_drm_panel_alloc() to allocate the
panel. In the call to the new API, avoid using explicit type and use
__typeof() for more type safety.

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Signed-off-by: Albert Esteve <aesteve@redhat.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patch.msgid.link/20260508-drm_panel_init_rm-v2-3-0bd4ac429971@redhat.com
Signed-off-by: Maxime Ripard <mripard@kernel.org>

diff --git a/drivers/gpu/drm/panel/panel-novatek-nt37700f.c b/drivers/gpu/drm/panel/panel-novatek-nt37700f.c
index 74f46a268c0f6534beccad5416b122338aad65ed..c221dd498fed4c0627b3003ced81a6160d923e24 100644 (file)
--- a/drivers/gpu/drm/panel/panel-novatek-nt37700f.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt37700f.c
@@ -225,9 +225,12 @@ static int nt37700f_tianma_probe(struct mipi_dsi_device *dsi)
        struct nt37700f_tianma *ctx;
        int ret;
 
-       ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
-       if (!ctx)
-               return -ENOMEM;
+       ctx = devm_drm_panel_alloc(dev, __typeof(*ctx), panel,
+                                 &nt37700f_tianma_panel_funcs,
+                                 DRM_MODE_CONNECTOR_DSI);
+
+       if (IS_ERR(ctx))
+               return PTR_ERR(ctx);
 
        ctx->supply = devm_regulator_get(dev, "power");
        if (IS_ERR(ctx->supply))
@@ -247,8 +250,6 @@ static int nt37700f_tianma_probe(struct mipi_dsi_device *dsi)
        dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
                          MIPI_DSI_CLOCK_NON_CONTINUOUS | MIPI_DSI_MODE_LPM;
 
-       drm_panel_init(&ctx->panel, dev, &nt37700f_tianma_panel_funcs,
-                      DRM_MODE_CONNECTOR_DSI);
        ctx->panel.prepare_prev_first = true;
 
        ctx->panel.backlight = nt37700f_tianma_create_backlight(dsi);