2011/7/29 Viresh Kumar [off-list ref]:

Simply writing 1 on bit 0 is sufficient instead of reading and clearing bits.
Also as per manual, for bit 3-31 of DMACConfiguration register:
"read undefined, write as 0"

So, we must not rely on values read from this registers bit 3-31.

Signed-off-by: Viresh Kumar <redacted>

Obviously correct,
Acked-by: Linus Walleij <redacted>

Thanks,
Linus Walleij