FUJITA Tomonori 349a642565 rust: Add read_poll_timeout function ...

Add read_poll_timeout function which polls periodically until a
condition is met, an error occurs, or the timeout is reached.

The C's read_poll_timeout (include/linux/iopoll.h) is a complicated
macro and a simple wrapper for Rust doesn't work. So this implements
the same functionality in Rust.

The C version uses usleep_range() while the Rust version uses
fsleep(), which uses the best sleep method so it works with spans that
usleep_range() doesn't work nicely with.

The sleep_before_read argument isn't supported since there is no user
for now. It's rarely used in the C version.

Reviewed-by: Andreas Hindborg <[email protected]>
Reviewed-by: Fiona Behrens <[email protected]>
Reviewed-by: Alexandre Courbot <[email protected]>
Tested-by: Alexandre Courbot <[email protected]>
Reviewed-by: Daniel Almeida <[email protected]>
Tested-by: Daniel Almeida <[email protected]>
Reviewed-by: Alice Ryhl <[email protected]>
Signed-off-by: FUJITA Tomonori <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
[ Fix a minor typo and add missing backticks. - Danilo ]
Signed-off-by: Danilo Krummrich <[email protected]>

2025-08-21 21:09:48 +02:00

..

mem.rs

rust: io: fix broken intra-doc links to platform::Device

2025-07-22 11:08:59 +02:00

poll.rs

rust: Add read_poll_timeout function

2025-08-21 21:09:48 +02:00

resource.rs

rust: io: fix broken intra-doc link to missing flags module

2025-07-22 11:08:59 +02:00