Messages in this thread | | | Subject | Re: [PATCH] xhci: Convert xhci_handshake() to use readl_poll_timeout() | From | Mathias Nyman <> | Date | Thu, 7 Feb 2019 10:32:10 +0200 |
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On 07.02.2019 02:03, Andrey Smirnov wrote: > Xhci_handshake() implements the algorithm already captured by > readl_poll_timeout(). Convert the former to use the latter to avoid > repetition.
readl_poll_timeout() doesn't really work here as it might sleep.
iopoll.h:
/** * readx_poll_timeout - Periodically poll an address until a condition is met or a timeout occurs * ... * Returns 0 on success and -ETIMEDOUT upon a timeout. In either * case, the last read value at @addr is stored in @val. Must not * be called from atomic context if sleep_us or timeout_us are used. -Mathias
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