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SubjectRe: [PATCH] xhci: Convert xhci_handshake() to use readl_poll_timeout()
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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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