On 04/17/2014 05:03 PM, Felipe Balbi wrote: > On Thu, Apr 17, 2014 at 05:56:15PM -0400, Santosh Shilimkar wrote: >> On Thursday 17 April 2014 05:52 PM, Felipe Balbi wrote: >>> Hi, >>> >>> On Thu, Apr 17, 2014 at 03:49:21PM -0500, Nishanth Menon wrote: >>>> Currently we use __raw_readl and writel in this driver, however, there >>> >>> __raw_* and *_relaxed variants are the same, just have a look <asm/io.h> >>> >> Except the relaxed version can take care of endian conversion if >> needed. :-) > > right, but according to commit log, this commit is more concerned about > the memory barriers which writel()/readl() add, not endianness. Just a > matter of fixing up commit log. > yep, this patch does replace writel with writel_relaxed there is no strong need for barriers in the operations that we perform here. I agree that the commit message should probably be a little more detailed at this point. How about: Currently we use __raw_readl and writel in this driver. Considering there is no specific need for a memory barrier, replacing writel with endian-neutral writel_relaxed and replacing __raw_readls with the corresponding endian-neutral readl_relaxed allows us to have a standard set of register operations for the driver. While at it, simplify address computation using variables for register. -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
