Jonathan Rissanen 0ffac654e9 Bluetooth: hci_h4: Fix race during initialization ... Commit 5df5dafc17 ("Bluetooth: hci_uart: Fix another race during initialization") fixed a race for hci commands sent during initialization. However, there is still a race that happens if an hci event from one of these commands is received before HCI_UART_REGISTERED has been set at the end of hci_uart_register_dev(). The event will be ignored which causes the command to fail with a timeout in the log: "Bluetooth: hci0: command 0x1003 tx timeout" This is because the hci event receive path (hci_uart_tty_receive -> h4_recv) requires HCI_UART_REGISTERED to be set in h4_recv(), while the hci command transmit path (hci_uart_send_frame -> h4_enqueue) only requires HCI_UART_PROTO_INIT to be set in hci_uart_send_frame(). The check for HCI_UART_REGISTERED was originally added in commit c257820291 ("Bluetooth: Fix H4 crash from incoming UART packets") to fix a crash caused by hu->hdev being null dereferenced. That can no longer happen: once HCI_UART_PROTO_INIT is set in hci_uart_register_dev() all pointers (hu, hu->priv and hu->hdev) are valid, and hci_uart_tty_receive() already calls h4_recv() on HCI_UART_PROTO_INIT or HCI_UART_PROTO_READY. Remove the check for HCI_UART_REGISTERED in h4_recv() to fix the race condition. Fixes: 5df5dafc17 ("Bluetooth: hci_uart: Fix another race during initialization") Signed-off-by: Jonathan Rissanen <jonathan.rissanen@axis.com> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>		2026-04-01 16:45:47 -04:00
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ath3k.c	…
bcm203x.c	…
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bluecard_cs.c	…
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btintel.c	…
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btmrvl_debugfs.c	…
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btusb.c	Bluetooth: btusb: clamp SCO altsetting table indices	2026-03-25 15:32:55 -04:00
dtl1_cs.c	…
hci_ag6xx.c	…
hci_aml.c	…
hci_ath.c	…
hci_bcm.c	…
hci_bcm4377.c	…
hci_bcsp.c	…
hci_h4.c	Bluetooth: hci_h4: Fix race during initialization	2026-04-01 16:45:47 -04:00
hci_h5.c	…
hci_intel.c	…
hci_ldisc.c	…
hci_ll.c	…
hci_mrvl.c	…
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hci_uart.h	…
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virtio_bt.c	…