Sergei Shtylyov wrote:
Commit 871af1210f13966ab911ed2166e4ab2ce775b99d (libata: Add 32bit PIO support) has caused all kinds of errors on the ATAPI devices, so it has been empirically proven that one shouldn't try to read/write an extra data word when a device is not expecting it already. "Don't do it then"; however, still use a chance to do 32-bit read/write one last time when there are exactly 3 trailing bytes. Oh, and stop pointlessly swapping the bytes to and fro on big-endian machines by using io*_rep() accessors which shouldn't byte-swap. This patch should fix the kernel.org bug #12609. Signed-off-by: Sergei Shtylyov <sshtylyov@xxxxxxxxxxxxx> --- Added the comments and signoff. The patch is against the recent Linus' tree. It's a hopefully better replacement for Hugh Dickins most recent patch (http://marc.info/?l=linux-ide&m=123352294619281)...
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