Brings the documentation of drm_simple_encoder_init() in sync with the function's signature. Also add a paragraph clarifying the management of the encoder's memory.

v2: * document memory management

Signed-off-by: Thomas Zimmermann tzimmermann@suse.de Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Fixes: 63170ac6f2e8 ("drm/simple-kms: Add drm_simple_encoder_{init,create}()") Cc: Sam Ravnborg sam@ravnborg.org Cc: Maarten Lankhorst maarten.lankhorst@linux.intel.com Cc: Maxime Ripard mripard@kernel.org Cc: David Airlie airlied@linux.ie Cc: Daniel Vetter daniel@ffwll.ch Cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/drm_simple_kms_helper.c | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_simple_kms_helper.c b/drivers/gpu/drm/drm_simple_kms_helper.c index 5a2abe2dea3e..74946690aba4 100644 --- a/drivers/gpu/drm/drm_simple_kms_helper.c +++ b/drivers/gpu/drm/drm_simple_kms_helper.c @@ -38,9 +38,10 @@ static const struct drm_encoder_funcs drm_simple_encoder_funcs_cleanup = { };

/** - * drm_simple_encoder_init - Initialize a preallocated encoder + * drm_simple_encoder_init - Initialize a preallocated encoder with + * basic functionality. * @dev: drm device - * @funcs: callbacks for this encoder + * @encoder: the encoder to initialize * @encoder_type: user visible type of the encoder * * Initialises a preallocated encoder that has no further functionality. @@ -48,6 +49,15 @@ static const struct drm_encoder_funcs drm_simple_encoder_funcs_cleanup = { * The encoder will be cleaned up automatically as part of the mode-setting * cleanup. * + * The caller of drm_simple_encoder_init() is responsible for freeing + * the encoder's memory after the encoder has been cleaned up. At the + * moment this only works reliably if the encoder data structure is + * stored in the device structure. Free the encoder's memory as part of + * the device release function. + * + * FIXME: Later improvements to DRM's resource management may allow for + * an automated kfree() of the encoder's memory. + * * Returns: * Zero on success, error code on failure. */ -- 2.25.1