Commen=
t # 16
on bug 83708<=
/a>
from Michel D=C3=A4nzer
(In reply to comment #=
15)
> 1. I do not add cpu_to_le32() first ,but when I =
trace the messages from
> printk,the value of msg_type is reversed.
That's in radeon_uvd_cs_msg()? Sounds like the Mesa UVD code writes the
messages in host byte order, not in little endian. Maybe Christian can clar=
ify
which byte order should be used for them.
> 2. #if 0 ...#endif is the original code from ker=
nel. #if 1 ...#endif is
> changed code.
Ah right, never mind, I misread that hunk before.
> By the way, u said writel() and readl() already =
convert to/from little
> endian. is based on the X86 arch implement?
It's the same on all architectures: writel() takes a datum in host byte ord=
er
and writes it in little endian. readl() reads a little endian datum and ret=
urns
it in host byte order. (This means that on little endian hosts such as x86,=
the
datum is transferred unchanged)