On Wed, Nov 11, 2009 at 05:41:15PM +0800, Barry Song wrote:
While probing, AC97 codec drivers generically execute the following sequence: snd_soc_new_ac97_codec -> snd_soc_new_pcms -> reset ac-link/read AC97 ID to detect ->... -> snd_soc_init_card
commit 474828a40f6ddab6e2a3475a19c5c84aa3ec7d60 adds platform_data to snd_ac97 instance. But ac97 platform data hasn't given to snd_ac97 until snd_soc_init_card. Then while ac97_read access platform_data of snd_ac97 for detecting, NULL pointer oops will fire. That means old platform_data patch doesn't work in real-life cases.
This patch moves the operation of setting ac97 platform_data earlier than ac97 reading/writing operations. Then it makes platform_data of AC97 become practically useful.
Signed-off-by: Barry Song 21cnbao@gmail.com
Applied, thanks.