Re: [alsa-devel] [RFC PATCH] ALSA: core: Add DMA share buffer support

2019-01-28 Thread Takashi Iwai
On Mon, 28 Jan 2019 14:31:23 +0100, Jaroslav Kysela wrote: > > Dne 25.1.2019 v 19:25 Mark Brown napsal(a): > > On Fri, Jan 25, 2019 at 02:19:22PM +0100, Takashi Iwai wrote: > >> Leo Yan wrote: > > > >>> If we directly use the device node /dev/snd/ as file descriptor, even > >>> though we specify

Re: [alsa-devel] [RFC PATCH] ALSA: core: Add DMA share buffer support

2019-01-28 Thread Jaroslav Kysela
Dne 25.1.2019 v 19:25 Mark Brown napsal(a): > On Fri, Jan 25, 2019 at 02:19:22PM +0100, Takashi Iwai wrote: >> Leo Yan wrote: > >>> If we directly use the device node /dev/snd/ as file descriptor, even >>> though we specify flag O_EXCL when open it, but it still is not an >>> anon inode file descr

Re: [alsa-devel] [RFC PATCH] ALSA: core: Add DMA share buffer support

2019-01-25 Thread Mark Brown
On Fri, Jan 25, 2019 at 02:19:22PM +0100, Takashi Iwai wrote: > Leo Yan wrote: > > If we directly use the device node /dev/snd/ as file descriptor, even > > though we specify flag O_EXCL when open it, but it still is not an > > anon inode file descriptor. Thus this is not safe enough and will be

Re: [alsa-devel] [RFC PATCH] ALSA: core: Add DMA share buffer support

2019-01-25 Thread Takashi Iwai
On Wed, 23 Jan 2019 13:46:58 +0100, Leo Yan wrote: > > Hi all, > > On Wed, Jan 23, 2019 at 12:58:51PM +0100, Takashi Iwai wrote: > > On Tue, 22 Jan 2019 21:25:35 +0100, > > Mark Brown wrote: > > > > > > On Mon, Jan 21, 2019 at 03:15:43PM +0100, Jaroslav Kysela wrote: > > > > Dne 21.1.2019 v 13:4