Lin Ma 86cdf8e387 NFC: reorganize the functions in nci_request ... There is a possible data race as shown below: thread-A in nci_request() | thread-B in nci_close_device() | mutex_lock(&ndev->req_lock); test_bit(NCI_UP, &ndev->flags); | ... | test_and_clear_bit(NCI_UP, &ndev->flags) mutex_lock(&ndev->req_lock); | | This race will allow __nci_request() to be awaked while the device is getting removed. Similar to commit e2cb6b891a ("bluetooth: eliminate the potential race condition when removing the HCI controller"). this patch alters the function sequence in nci_request() to prevent the data races between the nci_close_device(). Signed-off-by: Lin Ma <linma@zju.edu.cn> Fixes: 6a2968aaf5 ("NFC: basic NCI protocol implementation") Link: https://lore.kernel.org/r/20211115145600.8320-1-linma@zju.edu.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2021-11-17 20:16:53 -08:00
..
hci	nfc: drop unneeded debug prints	2021-10-11 17:00:51 -07:00
nci	NFC: reorganize the functions in nci_request	2021-11-17 20:16:53 -08:00
af_nfc.c	nfc: fix error handling of nfc_proto_register()	2021-10-13 17:32:38 -07:00
core.c
digital.h
digital_core.c	NFC: digital: fix possible memory leak in digital_tg_listen_mdaa()	2021-10-13 17:44:29 -07:00
digital_dep.c
digital_technology.c	NFC: digital: fix possible memory leak in digital_in_send_sdd_req()	2021-10-13 17:44:29 -07:00
Kconfig
llcp.h
llcp_commands.c	nfc: drop unneeded debug prints	2021-10-11 17:00:51 -07:00
llcp_core.c	nfc: drop unneeded debug prints	2021-10-11 17:00:51 -07:00
llcp_sock.c
Makefile
netlink.c	NFC: add necessary privilege flags in netlink layer	2021-11-03 11:15:18 +00:00
nfc.h
rawsock.c