From: Chandrashekar Devegowda <chandrashekar.devegowda@xxxxxxxxx>
Modify the driver to post 3 fewer buffers than the maximum rx buffers
(64) allowed for the firmware. This change mitigates a hardware issue
causing a race condition in the firmware, improving stability and data
handling.
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@xxxxxxxxx>
Signed-off-by: Kiran K <kiran.k@xxxxxxxxx>
---
changes from v1->v2:
- Add errata details
drivers/bluetooth/btintel_pcie.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btintel_pcie.c b/drivers/bluetooth/btintel_pcie.c
index 03f13de4a723..780697880d59 100644
--- a/drivers/bluetooth/btintel_pcie.c
+++ b/drivers/bluetooth/btintel_pcie.c
@@ -398,7 +398,12 @@ static int btintel_pcie_start_rx(struct btintel_pcie_data *data)
int i, ret;
struct rxq *rxq = &data->rxq;
- for (i = 0; i < rxq->count; i++) {
+ /* WREQ-198603 - Post (BTINTEL_PCIE_RX_DESCS_COUNT - 3) buffers to
+ * overcome the hardware issues leading to race condition at the
+ * firmware.
+ */
+
+ for (i = 0; i < rxq->count - 3; i++) {
ret = btintel_pcie_submit_rx(data);
if (ret)
return ret;
--
2.43.0
