A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-12 15:49:17 -04:00
Code Issues Projects Releases Packages Wiki Activity

qcacmn: Make sure no PCIe link access when runtime PM suspended

Browse source 
There should be no PCIe link access from DP fastpath when device has
runtime PM suspended. Runtime PM resume needs to be requested before
such access happens.

Change-Id: I924ea3e3d5b7d823efd3bd10e2be9b36a5998e24
CRs-fixed: 2023358
This commit is contained in:
Yue Ma 2017-02-17 10:45:26 -08:00 • committed by Sandeep Puligilla
commit f271ef063f
1 changed files with 18 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

23
hif/src/ce/ce_service.c
View file

@ -618,11 +618,22 @@ int ce_send_fast(struct CE_handle *copyeng, qdf_nbuf_t msdu,
uint64_t dma_addr;
uint32_t user_flags;
enum hif_ce_event_type type = FAST_TX_SOFTWARE_INDEX_UPDATE;
bool ok_to_send = true;
qdf_spin_lock_bh(&ce_state->ce_index_lock);
Q_TARGET_ACCESS_BEGIN(scn);
DATA_CE_UPDATE_SWINDEX(src_ring->sw_index, scn, ctrl_addr);
/*
* Request runtime PM resume if it has already suspended and make
* sure there is no PCIe link access.
*/
if (hif_pm_runtime_get(hif_hdl) != 0)
ok_to_send = false;
if (ok_to_send) {
Q_TARGET_ACCESS_BEGIN(scn);
DATA_CE_UPDATE_SWINDEX(src_ring->sw_index, scn, ctrl_addr);
}
write_index = src_ring->write_index;
sw_index = src_ring->sw_index;
@ -636,7 +647,8 @@ int ce_send_fast(struct CE_handle *copyeng, qdf_nbuf_t msdu,
SLOTS_PER_DATAPATH_TX,
CE_RING_DELTA(nentries_mask, write_index, sw_index - 1));
OL_ATH_CE_PKT_ERROR_COUNT_INCR(scn, CE_RING_DELTA_FAIL);
Q_TARGET_ACCESS_END(scn);
if (ok_to_send)
Q_TARGET_ACCESS_END(scn);
qdf_spin_unlock_bh(&ce_state->ce_index_lock);
return 0;
}
@ -725,19 +737,20 @@ int ce_send_fast(struct CE_handle *copyeng, qdf_nbuf_t msdu,
src_ring->write_index = write_index;
if (hif_pm_runtime_get(hif_hdl) == 0) {
if (ok_to_send) {
if (qdf_likely(ce_state->state == CE_RUNNING)) {
type = FAST_TX_WRITE_INDEX_UPDATE;
war_ce_src_ring_write_idx_set(scn, ctrl_addr,
write_index);
Q_TARGET_ACCESS_END(scn);
} else
ce_state->state = CE_PENDING;
hif_pm_runtime_put(hif_hdl);
}
hif_record_ce_desc_event(scn, ce_state->id, type,
NULL, NULL, write_index);
Q_TARGET_ACCESS_END(scn);
qdf_spin_unlock_bh(&ce_state->ce_index_lock);
/* sent 1 packet */