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

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

2014-05-06 Thread Bjorn Helgaas
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 documentation to use "bus address" when appropriate. Also, co