Thank you for your help. I will only apply the first patch! LiYong
. > Andy Green wrote: >> At a guess, they may be trying to fix the same bug different ways, > > Yes, I can confirm this. > >> but >> if it's true, then the second patch should also do the same to >> do_pio_read loop? So maybe just the first patch will solve it. > > Yes, I think also do_pio_read should be fixed. > > The two sides are slightly different: in the do_pio_write case, > you loop forever, so the problem is instantly visible. > > In the do_pio_read case you loop until the word is complete. This > should be okay in most cases, but I could imagine error conditions > where this is no longer true and you'd end up with a system that > dies from time to time. > > - Werner >
