Hi, Mathias Nyman <mathias.nyman@xxxxxxxxxxxxxxx> writes: > 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. readl_poll_timeout_atomic()? -- balbi
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