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SubjectRe: [PATCH 1/2] mailbox: mailbox-test: add support for fasync/poll

On 29/11/16 14:37, Sudeep Holla wrote:
> Currently the read operation on the message debug file returns error if
> there's no data ready to be read. It expects the userspace to retry if
> it fails. Since the mailbox response could be asynchronous, it would be
> good to add support to block the read until the data is available.
> We can also implement poll file operations so that the userspace can
> wait to become ready to perform any I/O.
> This patch implements the poll and fasync file operation callback for
> the test mailbox device.
> Cc: Lee Jones <>
> Cc: Jassi Brar <>
> Signed-off-by: Sudeep Holla <>

Gentle Ping!


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