Comment # 16
on bug 83708
from Michel Dänzer
(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 clarify which byte order should be used for them. > 2. #if 0 ...#endif is the original code from kernel. #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 order and writes it in little endian. readl() reads a little endian datum and returns it in host byte order. (This means that on little endian hosts such as x86, the datum is transferred unchanged)
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