[lkml]   [2013]   [Feb]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] drivers/block/xsysace - replace in(out)_8/in(out)_be16/in(out)_le16 with generic iowrite(read)8/16(be)
On Tuesday 05 February 2013, Michal Simek wrote:
> I want to be sure about this. I have parsed this again with closer look and
> seems to me that ioread32 is equal to readl and iowrite32 to writel.
> Arnd: Am I right?

Correct. On all the architectures you care about (most importantly, not
x86), readl and ioread32 are defined to have the same semantics. There
are a few exceptions where ioread32 provides a wrapper for PCI
PIO accesses that are not memory mapped, making ioread32 slightly
slower than readl, but for all practical purposes you don't have
to worry about it ;-)


 \ /
  Last update: 2013-02-06 00:45    [W:0.116 / U:4.572 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site