net: ipa: retry modem stop if busy

Browse source

The IPA driver remove callback, ipa_remove(), calls ipa_modem_stop()
if the setup stage of initialization is complete.  If a concurrent
call to ipa_modem_start() or ipa_modem_stop() has begin but not
completed, ipa_modem_stop() can return an error (-EBUSY).

The next patch adds a driver shutdown callback, which will simply
call ipa_remove().  We really want our shutdown callback to clean
things up.  So add a single retry to the ipa_modem_stop() call in
ipa_remove() after a short (millisecond) delay.  This offers no
guarantee the shutdown will complete successfully, but we'll at
least try a little harder before giving up.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Alex Elder 2020-11-19 16:49:28 -06:00 • committed by Jakub Kicinski

parent 1136145660

commit 7c80e83829

1 changed files with 5 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

5

drivers/net/ipa/ipa_main.c

View file