Re: [PATCH RFC] usb: musb: fail unaligned DMA transfers on v1.8 and above

2010-11-07 Thread Anand Gadiyar
On 10/31/2010 3:29 PM, Ming Lei wrote: 2010/10/31 Anand Gadiyar: The Inventra DMA engine in version 1.8 and later of the MUSB controller cannot handle DMA addresses that are not aligned to a 4 byte boundary. It ends up ignoring the last two bits programmed in the DMA_ADDR register. This is a del

Re: [PATCH RFC] usb: musb: fail unaligned DMA transfers on v1.8 and above

2010-11-05 Thread Felipe Balbi
On Sun, Oct 31, 2010 at 12:25:59AM -0500, Gadiyar, Anand wrote: The Inventra DMA engine in version 1.8 and later of the MUSB controller cannot handle DMA addresses that are not aligned to a 4 byte boundary. It ends up ignoring the last two bits programmed in the DMA_ADDR register. This is a delib

Re: [PATCH RFC] usb: musb: fail unaligned DMA transfers on v1.8 and above

2010-11-01 Thread Sergei Shtylyov
Hello. On 31-10-2010 8:25, Anand Gadiyar wrote: The Inventra DMA engine in version 1.8 and later of the MUSB controller cannot handle DMA addresses that are not aligned to a 4 byte boundary. It ends up ignoring the last two bits programmed in the DMA_ADDR register. This is a deliberate design c

Re: [PATCH RFC] usb: musb: fail unaligned DMA transfers on v1.8 and above

2010-10-31 Thread Ming Lei
Cc Hema 2010/10/31 Anand Gadiyar : > The Inventra DMA engine in version 1.8 and later of the MUSB > controller cannot handle DMA addresses that are not aligned > to a 4 byte boundary. It ends up ignoring the last two bits > programmed in the DMA_ADDR register. This is a deliberate > design change

[PATCH RFC] usb: musb: fail unaligned DMA transfers on v1.8 and above

2010-10-30 Thread Anand Gadiyar
The Inventra DMA engine in version 1.8 and later of the MUSB controller cannot handle DMA addresses that are not aligned to a 4 byte boundary. It ends up ignoring the last two bits programmed in the DMA_ADDR register. This is a deliberate design change in the controller and is documented in the pro