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| author | Kiran K <kiran.k@intel.com> | 2025-01-31 18:30:19 +0530 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2025-02-13 11:14:04 -0500 |
| commit | 872274b992839ff64fe560767fe7ee5f942ccdb1 (patch) | |
| tree | ea5aefc335308a47bc4adb2590d5bb588b9d66eb /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | b4f82f9ed43aefa79bec2504ae8c29be0c0f5d1d (diff) | |
Bluetooth: btintel_pcie: Fix a potential race condition
On HCI_OP_RESET command, firmware raises alive interrupt. Driver needs
to wait for this before sending other command. This patch fixes the potential
miss of alive interrupt due to which HCI_OP_RESET can timeout.
Expected flow:
If tx command is HCI_OP_RESET,
1. set data->gp0_received = false
2. send HCI_OP_RESET
3. wait for alive interrupt
Actual flow having potential race:
If tx command is HCI_OP_RESET,
1. send HCI_OP_RESET
1a. Firmware raises alive interrupt here and in ISR
data->gp0_received is set to true
2. set data->gp0_received = false
3. wait for alive interrupt
Signed-off-by: Kiran K <kiran.k@intel.com>
Fixes: 05c200c8f029 ("Bluetooth: btintel_pcie: Add handshake between driver and firmware")
Reported-by: Bjorn Helgaas <helgaas@kernel.org>
Closes: https://patchwork.kernel.org/project/bluetooth/patch/20241001104451.626964-1-kiran.k@intel.com/
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions