From 68553650bc9c57c7e530c84e5b2945e9dfe1a560 Mon Sep 17 00:00:00 2001 From: Alexander Usyskin Date: Mon, 6 Jun 2022 17:42:24 +0300 Subject: mei: hbm: drop capability response on early shutdown Drop HBM responses also in the early shutdown phase where the usual traffic is allowed. Extend the rule that drop HBM responses received during the shutdown phase by also in MEI_DEV_POWERING_DOWN state. This resolves the stall if the driver is stopping in the middle of the link initialization or link reset. Drop the capabilities response on early shutdown. Fixes: 6d7163f2c49f ("mei: hbm: drop hbm responses on early shutdown") Cc: Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Link: https://lore.kernel.org/r/20220606144225.282375-2-tomas.winkler@intel.com Signed-off-by: Greg Kroah-Hartman --- drivers/misc/mei/hbm.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/misc') diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c index cebcca6d6d3e..cf2b8261da14 100644 --- a/drivers/misc/mei/hbm.c +++ b/drivers/misc/mei/hbm.c @@ -1351,7 +1351,8 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr) if (dev->dev_state != MEI_DEV_INIT_CLIENTS || dev->hbm_state != MEI_HBM_CAP_SETUP) { - if (dev->dev_state == MEI_DEV_POWER_DOWN) { + if (dev->dev_state == MEI_DEV_POWER_DOWN || + dev->dev_state == MEI_DEV_POWERING_DOWN) { dev_dbg(dev->dev, "hbm: capabilities response: on shutdown, ignoring\n"); return 0; } -- cgit v1.2.3-59-g8ed1b