diff options
| author | Linus Lüssing <ll@simonwunderlich.de> | 2021-10-05 16:55:53 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2021-10-05 17:27:31 +0300 |
| commit | 053f9852b95e7721cf3b615539d701bae3e17ddb (patch) | |
| tree | 514435955eff5313bf5eafc70fdf6f39feab5706 /drivers/net/wireless/ath/ath9k/debug.h | |
| parent | 747ff7d3d7424876111b7559b7f6704762f89796 (diff) | |
ath9k: add option to reset the wifi chip via debugfs
Sometimes, in yet unknown cases the wifi chip stops working. To allow a
watchdog in userspace to easily and quickly reset the wifi chip, add the
according functionality to userspace. A reset can then be triggered
via:
$ echo 1 > /sys/kernel/debug/ieee80211/phy0/ath9k/reset
The number of user resets can further be tracked in the row "User reset"
in the same file.
So far people usually used "iw scan" to fix ath9k chip hangs from
userspace. Which triggers the ath9k_queue_reset(), too. The reset file
however has the advantage of less overhead, which makes debugging bugs
within ath9k_queue_reset() easier.
Signed-off-by: Linus Lüssing <ll@simonwunderlich.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210914192515.9273-2-linus.luessing@c0d3.blue
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/debug.h')
| -rw-r--r-- | drivers/net/wireless/ath/ath9k/debug.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/debug.h b/drivers/net/wireless/ath/ath9k/debug.h index 33826aa13687..389459c04d14 100644 --- a/drivers/net/wireless/ath/ath9k/debug.h +++ b/drivers/net/wireless/ath/ath9k/debug.h @@ -39,6 +39,7 @@ struct fft_sample_tlv; #endif enum ath_reset_type { + RESET_TYPE_USER, RESET_TYPE_BB_HANG, RESET_TYPE_BB_WATCHDOG, RESET_TYPE_FATAL_INT, |