Re: [PATCH v2 02/31] cinergyT2-core: don't do DMA on stack

2016-10-17 Thread Mauro Carvalho Chehab
Em Sat, 15 Oct 2016 22:54:49 +0200 Johannes Stezenbach escreveu: > On Tue, Oct 11, 2016 at 07:09:17AM -0300, Mauro Carvalho Chehab wrote: > > --- a/drivers/media/usb/dvb-usb/cinergyT2-core.c > > +++ b/drivers/media/usb/dvb-usb/cinergyT2-core.c > > @@ -41,6 +41,8 @@

Re: [PATCH v2 02/31] cinergyT2-core: don't do DMA on stack

2016-10-15 Thread Johannes Stezenbach
On Tue, Oct 11, 2016 at 07:09:17AM -0300, Mauro Carvalho Chehab wrote: > --- a/drivers/media/usb/dvb-usb/cinergyT2-core.c > +++ b/drivers/media/usb/dvb-usb/cinergyT2-core.c > @@ -41,6 +41,8 @@ DVB_DEFINE_MOD_OPT_ADAPTER_NR(adapter_nr); > > struct cinergyt2_state { > u8 rc_counter; > +

[PATCH v2 02/31] cinergyT2-core: don't do DMA on stack

2016-10-11 Thread Mauro Carvalho Chehab
The USB control messages require DMA to work. We cannot pass a stack-allocated buffer, as it is not warranted that the stack would be into a DMA enabled area. Reviewed-By: Patrick Boettcher Signed-off-by: Mauro Carvalho Chehab ---