Hi Mark, Ajit > From: Ajit Pandey <ajitp@xxxxxxxxxxxxxx> > Date: Wed, 9 Jan 2019 14:17:07 +0530 > Subject: [PATCH] ASoC: soc-core: defer card probe until all component is added > to list > > DAI component probe is not called if it is not present > in component list during sound card registration. > Check if component is available in component list for > platform and cpu dai before soundcard registration. > > Signed-off-by: Ajit Pandey <ajitp@xxxxxxxxxxxxxx> > Signed-off-by: Rohit kumar <rohitkr@xxxxxxxxxxxxxx> > Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> > --- I got below WARNING by this patch. I guess we need mutex_lock() on snd_soc_register_card() ? ... [drm] Device feb00000.display probed [drm] Cannot find any crtc or sizes [drm] Cannot find any crtc or sizes WARNING: CPU: 0 PID: 76 at sound/soc/soc-core.c:739 soc_find_component+0xb8/0xc0 CPU: 0 PID: 76 Comm: kworker/0:1 Not tainted 5.0.0-rc1+ #1360 Hardware name: Renesas H3ULCB Kingfisher board based on r8a7795 ES2.0+ (DT) Workqueue: events deferred_probe_work_func pstate: 60000005 (nZCv daif -PAN -UAO) pc : soc_find_component+0xb8/0xc0 lr : soc_find_component+0xb4/0xc0 sp : ffff00001217ba10 x29: ffff00001217ba10 x28: 0000000000000000 x27: ffff000010a82920 x26: 0000000000000000 x25: ffff8006f9c59900 x24: ffff0000105f33a0 x23: ffff000010948d70 x22: 0000000000000000 x21: ffff000010af1720 x20: ffff8006ff80b6d8 x19: ffff8006f8523080 x18: 0000000000000010 x17: 0000000000000000 x16: 0000000000000000 x15: ffffffffffffffff x14: 0720072007200720 x13: 0720072007200720 x12: 0720072007200720 x11: 0720072007200720 x10: 0720072007200720 x9 : 0000000000000000 x8 : ffff000010a85000 x7 : ffff000010114bd4 x6 : 0000000000000001 x5 : 0000000000000018 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000003 x1 : ffff000010af17b0 x0 : 0000000000000000 Call trace: soc_find_component+0xb8/0xc0 soc_init_dai_link+0x18c/0x210 snd_soc_register_card.part.16+0x138/0x198 snd_soc_register_card+0x30/0x48 devm_snd_soc_register_card+0x4c/0xa0 graph_probe+0x2d8/0x388 platform_drv_probe+0x58/0xa8 really_probe+0x1c0/0x2a0 driver_probe_device+0x5c/0xf0 __device_attach_driver+0x9c/0xe0 ... _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
