From mboxrd@z Thu Jan 1 00:00:00 1970 From: vinod.koul@intel.com (Vinod Koul) Date: Wed, 7 Dec 2016 22:13:41 +0530 Subject: Tearing down DMA transfer setup after DMA client has finished In-Reply-To: References: <58356EA8.2010806@free.fr> <20161125045549.GC2698@localhost> <092f44ee-4560-be17-25f7-00948dba3cfa@free.fr> <20fc9020-7278-bc2f-2a8d-43aff5cabff8@free.fr> <20161206051222.GQ6408@localhost> <5846B237.8060409@free.fr> Message-ID: <20161207164341.GX6408@localhost> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, Dec 06, 2016 at 01:14:20PM +0000, M?ns Rullg?rd wrote: > > That's not going to work very well. Device drivers typically request > dma channels in their probe functions or when the device is opened. > This means that reserving one of the few channels there will inevitably > make some other device fail to operate. No that doesnt make sense at all, you should get a channel only when you want to use it and not in probe! -- ~Vinod