diff options
Diffstat (limited to 'drivers/misc/mei/hbm.c')
| -rw-r--r-- | drivers/misc/mei/hbm.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index 0a0448326e9d..98f95614b5b1 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -128,6 +128,17 @@ static bool is_treat_specially_client(struct mei_cl *cl, return false; } +/** + * mei_hbm_idle - set hbm to idle state + * + * @dev: the device structure + */ +void mei_hbm_idle(struct mei_device *dev) +{ + dev->init_clients_timer = 0; + dev->hbm_state = MEI_HBM_IDLE; +} + int mei_hbm_start_wait(struct mei_device *dev) { int ret; @@ -577,6 +588,14 @@ void mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) mei_read_slots(dev, dev->rd_msg_buf, hdr->length); mei_msg = (struct mei_bus_message *)dev->rd_msg_buf; + /* ignore spurious message and prevent reset nesting + * hbm is put to idle during system reset + */ + if (dev->hbm_state == MEI_HBM_IDLE) { + dev_dbg(&dev->pdev->dev, "hbm: state is idle ignore spurious messages\n"); + return 0; + } + switch (mei_msg->hbm_cmd) { case HOST_START_RES_CMD: version_res = (struct hbm_host_version_response *)mei_msg; |