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drm/fb-helper: Unmap client buffer during shutdown
The fbdev helper's generic probe function establishes a mapping for framebuffers without shadow buffer. The clean-up function did not unmap the buffer object. Add the unmap operation. As fbdev devices are usally released during system shutdown, this has not been a problem in practice. Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Sam Ravnborg <sam@ravnborg.org> Acked-by: Maxime Ripard <mripard@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20201120102545.4047-3-tzimmermann@suse.de
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1 changed files with 9 additions and 4 deletions
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@ -1988,14 +1988,19 @@ static void drm_fbdev_cleanup(struct drm_fb_helper *fb_helper)
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if (!fb_helper->dev)
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return;
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if (fbi && fbi->fbdefio) {
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fb_deferred_io_cleanup(fbi);
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shadow = fbi->screen_buffer;
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if (fbi) {
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if (fbi->fbdefio)
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fb_deferred_io_cleanup(fbi);
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if (drm_fbdev_use_shadow_fb(fb_helper))
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shadow = fbi->screen_buffer;
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}
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drm_fb_helper_fini(fb_helper);
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vfree(shadow);
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if (shadow)
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vfree(shadow);
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else
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drm_client_buffer_vunmap(fb_helper->buffer);
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drm_client_framebuffer_delete(fb_helper->buffer);
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}
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