{"comment":{"url":"https://api.github.com/repos/yangqiao/rtems/comments/11847577","html_url":"https://github.com/yangqiao/rtems/commit/971d3ccdab04171494a3b73684f4f6f243e230b9#commitcomment-11847577","id":11847577,"user":{"login":"yangqiao","id":3248445,"avatar_url":"https://avatars.githubusercontent.com/u/3248445?v=3","gravatar_id":"","url":"https://api.github.com/users/yangqiao","html_url":"https://github.com/yangqiao","followers_url":"https://api.github.com/users/yangqiao/followers","following_url":"https://api.github.com/users/yangqiao/following{/other_user}","gists_url":"https://api.github.com/users/yangqiao/gists{/gist_id}","starred_url":"https://api.github.com/users/yangqiao/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/yangqiao/subscriptions","organizations_url":"https://api.github.com/users/yangqiao/orgs","repos_url":"https://api.github.com/users/yangqiao/repos","events_url":"https://api.github.com/users/yangqiao/events{/privacy}","received_events_url":"https://api.github.com/users/yangqiao/received_events","type":"User","site_admin":false},"position":52,"line":52,"path":"c/src/lib/libbsp/arm/raspberrypi/misc/vc.c","commit_id":"971d3ccdab04171494a3b73684f4f6f243e230b9","created_at":"2015-06-24T20:48:08Z","updated_at":"2015-06-24T20:48:08Z","body":"Each function will sure to call this function, do an operation send then read. while the read should allways follow its send. So I think the lock can be here to pend other functions trying to use the mailbox. While when I runed it I always get blocked at the lock..."}}