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wcn36xx: drain pending indicator messages on shutdown 

When the interface is shut down, wcn36xx_smd_close() potentially races
against the queue worker. Make sure to cancel the work, and then free all
the remnants in hal_ind_queue manually.

This is again just a theoretical issue, not something that was triggered in
the wild.

Signed-off-by: Daniel Mack <daniel@zonque.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Daniel Mack 2018-05-23 11:14:55 +03:00 committed by Kalle Valo
parent 2a46c829a9
commit 773f9a28bc
1 changed files with 6 additions and 0 deletions
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6
drivers/net/wireless/ath/wcn36xx/smd.c
View File

@ -2513,5 +2513,11 @@ out:
void wcn36xx_smd_close(struct wcn36xx *wcn)
{
struct wcn36xx_hal_ind_msg *msg, *tmp;
cancel_work_sync(&wcn->hal_ind_work);
destroy_workqueue(wcn->hal_ind_wq);
list_for_each_entry_safe(msg, tmp, &wcn->hal_ind_queue, list)
kfree(msg);
}