qcacld-3.0: Avoid Using sme global lock in hdd calls of Connection mgr

If the connection manager command is moved from pending to active
queue after an SME initiated active command e.g SAP peer
disconnect, it's already holding the SME lock and trying to
acquire the connection manager lock.

Now if in another thread, the connection manager process is
already in progress and tries to get the SME lock,
the driver ends up in a deadlock.

Thus remove the SME global lock from the APIs called from
HDD disconnect handlers.

Change-Id: Ia1e9d4480935cb8954eeb02bf3d845dce4b29f8f
CRs-Fixed: 3139097

core/sme/src/common/sme_api.c

@@ -5502,7 +5502,7 @@ QDF_STATUS sme_set_tsf_gpio(mac_handle_t mac_handle, uint32_t pinvalue)
 
 QDF_STATUS sme_get_cfg_valid_channels(uint32_t *valid_ch_freq, uint32_t *len)
 {
-	QDF_STATUS status = QDF_STATUS_E_FAILURE;
+	QDF_STATUS status;
 	struct mac_context *mac_ctx = sme_get_mac_context();
 	uint32_t *valid_ch_freq_list;
 	uint32_t i;
@@ -5518,12 +5518,7 @@ QDF_STATUS sme_get_cfg_valid_channels(uint32_t *valid_ch_freq, uint32_t *len)
 	if (!valid_ch_freq_list)
 		return QDF_STATUS_E_NOMEM;
 
-	status = sme_acquire_global_lock(&mac_ctx->sme);
-	if (QDF_IS_STATUS_SUCCESS(status)) {
-		status = csr_get_cfg_valid_channels(mac_ctx,
-			valid_ch_freq_list, len);
-		sme_release_global_lock(&mac_ctx->sme);
-	}
+	status = csr_get_cfg_valid_channels(mac_ctx, valid_ch_freq_list, len);
 
 	for (i = 0; i < *len; i++)
 		valid_ch_freq[i] = valid_ch_freq_list[i];
@@ -8278,15 +8273,12 @@ QDF_STATUS sme_get_reg_info(mac_handle_t mac_handle, uint32_t chan_freq,
 			    uint32_t *regInfo1, uint32_t *regInfo2)
 {
 	struct mac_context *mac = MAC_CONTEXT(mac_handle);
-	QDF_STATUS status;
+	QDF_STATUS status = QDF_STATUS_SUCCESS;
 	uint8_t i;
 	bool found = false;
 
-	status = sme_acquire_global_lock(&mac->sme);
 	*regInfo1 = 0;
 	*regInfo2 = 0;
-	if (!QDF_IS_STATUS_SUCCESS(status))
-		return status;
 
 	for (i = 0; i < CFG_VALID_CHANNEL_LIST_LEN; i++) {
 		if (mac->scan.defaultPowerTable[i].center_freq == chan_freq) {
@@ -8302,7 +8294,6 @@ QDF_STATUS sme_get_reg_info(mac_handle_t mac_handle, uint32_t chan_freq,
 	if (!found)
 		status = QDF_STATUS_E_FAILURE;
 
-	sme_release_global_lock(&mac->sme);
 	return status;
 }