I don't know yet for sure what happens, but a quick look at the commit
seems to show that the driver synchronously spin-waits for up to 2.5ms
That's what the comment says, but the code says 2.5 _seconds_:
+ /* Wait for up to 2.5 milliseconds */
+ for (i = 0; i < 250000; i++) {
+ if (!(tr32(GRC_RX_CPU_EVENT) & GRC_RX_CPU_DRIVER_EVENT))
+ break;
+ udelay(10);
+ }
(not that milliseconds wouldn't be bad already...)
Segher
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