On Tue, Mar 21, 2017 at 09:13:51AM +0100, Thierry Reding wrote:
> From: Thierry Reding <treding@xxxxxxxxxx>
>
> Add a couple of temporary variables and use shorter names for existing
> variables in drm_fb_helper_add_one_connector() for better readability.
>
> Tested-by: John Stultz <john.stultz@xxxxxxxxxx>
> Signed-off-by: Thierry Reding <treding@xxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_fb_helper.c | 25 ++++++++++++++++---------
> 1 file changed, 16 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
> index 875a49048222..17fd98fe4a1f 100644
> --- a/drivers/gpu/drm/drm_fb_helper.c
> +++ b/drivers/gpu/drm/drm_fb_helper.c
> @@ -109,31 +109,38 @@ static DEFINE_MUTEX(kernel_fb_helper_lock);
> for (({ lockdep_assert_held(&(fbh)->dev->mode_config.mutex); }), \
> i__ = 0; i__ < (fbh)->connector_count; i__++)
>
> -int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper, struct drm_connector *connector)
> +int drm_fb_helper_add_one_connector(struct drm_fb_helper *fb_helper,
> + struct drm_connector *connector)
> {
> struct drm_fb_helper_connector **temp;
> - struct drm_fb_helper_connector *fb_helper_connector;
> + struct drm_fb_helper_connector *conn;
I'd go with fb_conn here. Still short, but avoids confusion with
drm_connector, which is what we usually call conn. Either way:
Reviewed-by: Daniel Vetter <daniel.vetter@xxxxxxxx>
> + unsigned int count;
>
> if (!drm_fbdev_emulation)
> return 0;
>
> WARN_ON(!mutex_is_locked(&fb_helper->dev->mode_config.mutex));
> - if (fb_helper->connector_count + 1 > fb_helper->connector_info_alloc_count) {
> - temp = krealloc(fb_helper->connector_info, sizeof(struct drm_fb_helper_connector *) * (fb_helper->connector_count + 1), GFP_KERNEL);
> +
> + count = fb_helper->connector_count + 1;
> +
> + if (count > fb_helper->connector_info_alloc_count) {
> + size_t size = count * sizeof(conn);
> +
> + temp = krealloc(fb_helper->connector_info, size, GFP_KERNEL);
> if (!temp)
> return -ENOMEM;
>
> - fb_helper->connector_info_alloc_count = fb_helper->connector_count + 1;
> + fb_helper->connector_info_alloc_count = count;
> fb_helper->connector_info = temp;
> }
>
> - fb_helper_connector = kzalloc(sizeof(struct drm_fb_helper_connector), GFP_KERNEL);
> - if (!fb_helper_connector)
> + conn = kzalloc(sizeof(*conn), GFP_KERNEL);
> + if (!conn)
> return -ENOMEM;
>
> drm_connector_get(connector);
> - fb_helper_connector->connector = connector;
> - fb_helper->connector_info[fb_helper->connector_count++] = fb_helper_connector;
> + conn->connector = connector;
> + fb_helper->connector_info[fb_helper->connector_count++] = conn;
> return 0;
> }
> EXPORT_SYMBOL(drm_fb_helper_add_one_connector);
> --
> 2.12.0
>
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--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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