On Thu, Apr 25, 2019 at 04:19:47PM +0200, Wolfram Sang wrote:
> There are two problems with WARN_ON() here. One: It is not ratelimited.
> Two: We don't see which adapter was used when trying to transfer
> something when already suspended. Implement a custom ratelimit once per
> adapter and use dev_WARN there. This fixes both issues. Drawback is that
> we don't see if multiple drivers are trying to transfer with the same
> adapter while suspended. They need to be discovered one after the other
> now. This is better than a high CPU load because a really broken driver
> might try to resend endlessly.
>
> Fixes: 9ac6cb5fbb17 ("i2c: add suspended flag and accessors for i2c adapters")
> Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
