Re: [PATCH v2 1/5] DMA-API: Clarify physical/bus address distinction

2014-05-08 Thread Greg Kroah-Hartman
On Tue, May 06, 2014 at 04:48:19PM -0600, Bjorn Helgaas wrote: > The DMA-API documentation sometimes refers to "physical addresses" when it > really means "bus addresses." Sometimes these are identical, but they may > be different if the bridge leading to the bus performs address translation. > Up

Re: [PATCH v2 1/5] DMA-API: Clarify physical/bus address distinction

2014-05-07 Thread Bjorn Helgaas
On Wed, May 07, 2014 at 09:37:04AM +0200, Arnd Bergmann wrote: > On Tuesday 06 May 2014 16:48:19 Bjorn Helgaas wrote: > > The DMA-API documentation sometimes refers to "physical addresses" when it > > really means "bus addresses." Sometimes these are identical, but they may > > be different if the

Re: [PATCH v2 1/5] DMA-API: Clarify physical/bus address distinction

2014-05-07 Thread Arnd Bergmann
On Tuesday 06 May 2014 16:48:19 Bjorn Helgaas wrote: > The DMA-API documentation sometimes refers to "physical addresses" when it > really means "bus addresses." Sometimes these are identical, but they may > be different if the bridge leading to the bus performs address translation. > Update the d