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qcacmn: Reo-Cmd: Donot write to reg if no src desc

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For reo_cmd ring, in current implementation, we call hal_srng_access_end
in case a descriptor is not available before baling out. This may cause
a write to the shadow register for the reo_cmd ring. In case we are in
the middle of WOW, this can be problematic.
Modify existing implementation to use hal_srng_access_end_reap, which
will not schedule a write to the register and simply return.

Change-Id: Ifb83d904e39b3d749522cd246a5ab3fe51a3104e
CRs-Fixed: 3194289
This commit is contained in:
Mohit Khanna
2022-05-20 07:47:47 -07:00
committed by Madan Koyyalamudi
parent 0130242aed
commit 04bf8070da
4 changed files with 92 additions and 60 deletions
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30
hal/wifi3.0/hal_srng.c
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@@ -1784,11 +1784,39 @@ void hal_set_low_threshold(hal_ring_handle_t hal_ring_hdl,
}
qdf_export_symbol(hal_set_low_threshold);
#ifdef FEATURE_RUNTIME_PM
void
hal_srng_rtpm_access_end(hal_soc_handle_t hal_soc_hdl,
hal_ring_handle_t hal_ring_hdl,
wlan_rtpm_dbgid rtpm_dbgid,
bool is_critical_ctx)
{
struct hal_soc *hal_soc = (struct hal_soc *)hal_soc_hdl;
if (qdf_unlikely(!hal_ring_hdl)) {
qdf_print("Error: Invalid hal_ring\n");
return;
}
if (hif_pm_runtime_get(hal_soc->hif_handle,
rtpm_dbgid, is_critical_ctx) == 0) {
hal_srng_access_end(hal_soc_hdl, hal_ring_hdl);
hif_pm_runtime_put(hal_soc->hif_handle,
rtpm_dbgid);
} else {
hal_srng_access_end_reap(hal_soc_hdl, hal_ring_hdl);
hal_srng_set_event(hal_ring_hdl, HAL_SRNG_FLUSH_EVENT);
hal_srng_inc_flush_cnt(hal_ring_hdl);
}
}
qdf_export_symbol(hal_srng_rtpm_access_end);
#endif /* FEATURE_RUNTIME_PM */
#ifdef FORCE_WAKE
void hal_set_init_phase(hal_soc_handle_t soc, bool init_phase)
{
struct hal_soc *hal_soc = (struct hal_soc *)soc;
hal_soc->init_phase = init_phase;
}
#endif /* FORCE_WAKE */