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| author | Avraham Stern <avraham.stern@intel.com> | 2023-08-22 10:33:17 +0300 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2023-08-22 13:19:53 +0200 |
| commit | 3243aee1cb9206521c82a49fa5879934c69cee7c (patch) | |
| tree | c6e6e633670d68d40baee3c933ffd120d29ea7f1 /drivers/net/wireless/intel/iwlwifi/mei | |
| parent | ef030ab17e060b0ef47028e86cf85b68988b56ae (diff) | |
| download | linux-3243aee1cb9206521c82a49fa5879934c69cee7c.tar.gz linux-3243aee1cb9206521c82a49fa5879934c69cee7c.tar.bz2 linux-3243aee1cb9206521c82a49fa5879934c69cee7c.zip | |
wifi: iwlmei: send HOST_GOES_DOWN message even if wiamt is disabled
The HOST_GOES_DOWN message should be sent even if wiamt is disabled.
Otherwise wiamt may still use the shared memory (e.g. if enabled
later) while it's no longer valid.
Signed-off-by: Avraham Stern <avraham.stern@intel.com>
Signed-off-by: Gregory Greenman <gregory.greenman@intel.com>
Link: https://lore.kernel.org/r/20230822103048.2baad50eb1c3.If7b7c1dc2d6bfc6bacf7f6c72972f19714d9d973@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mei')
| -rw-r--r-- | drivers/net/wireless/intel/iwlwifi/mei/main.c | 42 |
1 files changed, 19 insertions, 23 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mei/main.c b/drivers/net/wireless/intel/iwlwifi/mei/main.c index 908506f98242..27f45f5ea264 100644 --- a/drivers/net/wireless/intel/iwlwifi/mei/main.c +++ b/drivers/net/wireless/intel/iwlwifi/mei/main.c @@ -2070,33 +2070,29 @@ static void iwl_mei_remove(struct mei_cl_device *cldev) mutex_lock(&iwl_mei_mutex); - if (mei->amt_enabled) { - /* - * Tell CSME that we are going down so that it won't access the - * memory anymore, make sure this message goes through immediately. - */ - mei->csa_throttled = false; - iwl_mei_send_sap_msg(mei->cldev, - SAP_MSG_NOTIF_HOST_GOES_DOWN); - - for (i = 0; i < SEND_SAP_MAX_WAIT_ITERATION; i++) { - if (!iwl_mei_host_to_me_data_pending(mei)) - break; + /* Tell CSME that we are going down so that it won't access the + * memory anymore, make sure this message goes through immediately. + */ + mei->csa_throttled = false; + iwl_mei_send_sap_msg(mei->cldev, + SAP_MSG_NOTIF_HOST_GOES_DOWN); - msleep(20); - } + for (i = 0; i < SEND_SAP_MAX_WAIT_ITERATION; i++) { + if (!iwl_mei_host_to_me_data_pending(mei)) + break; - /* - * If we couldn't make sure that CSME saw the HOST_GOES_DOWN - * message, it means that it will probably keep reading memory - * that we are going to unmap and free, expect IOMMU error - * messages. - */ - if (i == SEND_SAP_MAX_WAIT_ITERATION) - dev_err(&mei->cldev->dev, - "Couldn't get ACK from CSME on HOST_GOES_DOWN message\n"); + msleep(20); } + /* If we couldn't make sure that CSME saw the HOST_GOES_DOWN + * message, it means that it will probably keep reading memory + * that we are going to unmap and free, expect IOMMU error + * messages. + */ + if (i == SEND_SAP_MAX_WAIT_ITERATION) + dev_err(&mei->cldev->dev, + "Couldn't get ACK from CSME on HOST_GOES_DOWN message\n"); + mutex_unlock(&iwl_mei_mutex); /* |