Em Mon, 14 Mar 2016 09:22:37 +0200 Sakari Ailus <sakari.ailus@xxxxxx> escreveu: > Hi Shuah, > > On Sat, Mar 12, 2016 at 06:48:09PM -0700, Shuah Khan wrote: > > Add GFP flags to media_create_pad_link(), media_create_intf_link(), > > media_devnode_create(), and media_add_link() that could get called > > in atomic context to allow callers to pass in the right flags for > > memory allocation. > > > > tree-wide driver changes for media_*() GFP flags change: > > Change drivers to add gfpflags to interffaces, media_create_pad_link(), > > media_create_intf_link() and media_devnode_create(). > > > > Signed-off-by: Shuah Khan <shuahkh@xxxxxxxxxxxxxxx> > > Suggested-by: Mauro Carvalho Chehab <mchehab@xxxxxxxxxxxxxxx> > > What's the use case for calling the above functions in an atomic context? > ALSA code seems to do a lot of stuff at atomic context. That's what happens on my test machine when au0828 gets probed before snd-usb-audio: http://pastebin.com/LEX5LD5K It seems that ALSA USB probe routine (usb_audio_probe) happens in atomic context. Regards, Mauro
