Commit bf2ffc4d authored by Chandrashekar Devegowda's avatar Chandrashekar Devegowda Committed by Luiz Augusto von Dentz
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Bluetooth: btintel_pcie: Reduce driver buffer posting to prevent race condition 



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: default avatarChandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Signed-off-by: default avatarKiran K <kiran.k@intel.com>
Fixes: c2b636b3 ("Bluetooth: btintel_pcie: Add support for PCIe transport")
Signed-off-by: default avatarLuiz Augusto von Dentz <luiz.von.dentz@intel.com>
parent 2dd71110

drivers/bluetooth/btintel_pcie.c

+5 −1
Original line number Diff line number Diff line
@@ -398,7 +398,11 @@ 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++) {

	/* 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;