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authorJesse Melhuish <[email protected]>2021-11-15 22:00:52 +0000
committerMarcel Holtmann <[email protected]>2021-11-16 14:03:11 +0100
commit385315decf65902768a0062b4e594f59f013025e (patch)
treeb40fa0f530df111ff1d43cd2b9907059797f58bc /tools/perf/scripts/python/libxed.py
parenta27c519a816437ec92f0ffa3adbc168c2c08725b (diff)
Bluetooth: Don't initialize msft/aosp when using user channel
A race condition is triggered when usermode control is given to userspace before the kernel's MSFT query responds, resulting in an unexpected response to userspace's reset command. Issue can be observed in btmon: < HCI Command: Vendor (0x3f|0x001e) plen 2 #3 [hci0] 05 01 .. @ USER Open: bt_stack_manage (privileged) version 2.22 {0x0002} [hci0] < HCI Command: Reset (0x03|0x0003) plen 0 #4 [hci0] > HCI Event: Command Complete (0x0e) plen 5 #5 [hci0] Vendor (0x3f|0x001e) ncmd 1 Status: Command Disallowed (0x0c) 05 . > HCI Event: Command Complete (0x0e) plen 4 #6 [hci0] Reset (0x03|0x0003) ncmd 2 Status: Success (0x00) Reviewed-by: Abhishek Pandit-Subedi <[email protected]> Reviewed-by: Sonny Sasaka <[email protected]> Signed-off-by: Jesse Melhuish <[email protected]> Signed-off-by: Marcel Holtmann <[email protected]>
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