diff options
Diffstat (limited to 'drivers/edgetpu/edgetpu-mailbox.c')
| -rw-r--r-- | drivers/edgetpu/edgetpu-mailbox.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/edgetpu/edgetpu-mailbox.c b/drivers/edgetpu/edgetpu-mailbox.c index cf996f7..eedde54 100644 --- a/drivers/edgetpu/edgetpu-mailbox.c +++ b/drivers/edgetpu/edgetpu-mailbox.c @@ -18,6 +18,7 @@ #include "edgetpu-kci.h" #include "edgetpu-mailbox.h" #include "edgetpu-mmu.h" +#include "edgetpu-sw-watchdog.h" #include "edgetpu-wakelock.h" #include "edgetpu.h" @@ -1132,6 +1133,13 @@ int edgetpu_mailbox_activate(struct edgetpu_dev *etdev, u32 mailbox_id, s16 vcid eh->fw_state |= bit; } mutex_unlock(&eh->lock); + /* + * We are observing OPEN_DEVICE KCI fails while other KCIs (usage update / shutdown) still + * succeed and no firmware crash is reported. Kick off the firmware restart when we are + * facing this and hope this can rescue the device from the bad state. + */ + if (ret == -ETIMEDOUT) + edgetpu_watchdog_bite(etdev, false); return ret; } |