diff options
| author |   Chandrashekar Devegowda <chandrashekar.devegowda@intel.com> | 2025-06-03 15:34:40 +0530 |
|---|---|---|
| committer |   Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2025-06-05 14:54:14 -0400 |
| commit | bf2ffc4d14db29cab781549912d2dc69127f4d3e (patch) | |
| tree | dd79b906aeed2b697b5e69c7db0f74fffe6ff603 | |
| parent | Bluetooth: btintel_pcie: Increase the tx and rx descriptor count (diff) | |
| download | wireguard-linux-bf2ffc4d14db29cab781549912d2dc69127f4d3e.tar.xz wireguard-linux-bf2ffc4d14db29cab781549912d2dc69127f4d3e.zip | |
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: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Signed-off-by: Kiran K <kiran.k@intel.com>
Fixes: c2b636b3f788 ("Bluetooth: btintel_pcie: Add support for PCIe transport")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
| -rw-r--r-- | drivers/bluetooth/btintel_pcie.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/bluetooth/btintel_pcie.c b/drivers/bluetooth/btintel_pcie.c index 03f13de4a723..563165c5efae 100644 --- a/drivers/bluetooth/btintel_pcie.c +++ b/drivers/bluetooth/btintel_pcie.c @@ -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; |