From 2b544dd7b43b19fb55ea4fbb3e30b60eb20b7828 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 15 Oct 2019 12:59:31 +0900 Subject: ASoC: soc-core: add for_each_rtd_components() and replace ALSA SoC has for_each_rtdcom() which is link list for rtd-component which is called as rtdcom. The relationship image is like below rtdcom rtdcom rtdcom component component component rtd->component_list -> list -> list -> list ... Here, the pointer get via normal link list is rtdcom, Thus, current for_each loop is like below, and need to get component via rtdcom->component for_each_rtdcom(rtd, rtdcom) { component = rtdcom->component; ... } but usually, user want to get pointer from for_each_xxx is component directly, like below. for_each_rtd_component(rtd, rtdcom, component) { ... } This patch expands list_for_each_entry manually, and enable to get component directly from for_each macro. Because of it, the macro becoming difficult to read, but macro itself becoming useful. Signed-off-by: Kuninori Morimoto Link: https://lore.kernel.org/r/878spm64m4.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Mark Brown --- include/sound/soc.h | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/include/sound/soc.h b/include/sound/soc.h index d730883626dc..320dcd440dab 100644 --- a/include/sound/soc.h +++ b/include/sound/soc.h @@ -739,8 +739,12 @@ struct snd_soc_rtdcom_list { struct snd_soc_component* snd_soc_rtdcom_lookup(struct snd_soc_pcm_runtime *rtd, const char *driver_name); -#define for_each_rtdcom(rtd, rtdcom) \ - list_for_each_entry(rtdcom, &(rtd)->component_list, list) +#define for_each_rtd_components(rtd, rtdcom, _component) \ + for (rtdcom = list_first_entry(&(rtd)->component_list, \ + typeof(*rtdcom), list); \ + (&rtdcom->list != &(rtd)->component_list) && \ + (_component = rtdcom->component); \ + rtdcom = list_next_entry(rtdcom, list)) struct snd_soc_dai_link_component { const char *name; -- cgit v1.2.3