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
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core.c	NFC: reorganize the functions in nci_request	2021-11-17 20:16:53 -08:00
data.c	nfc: nci: constify several pointers to u8, sk_buff and other structs	2021-07-30 17:22:52 +02:00
hci.c	nfc: drop unneeded debug prints	2021-10-11 17:00:51 -07:00
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
lib.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 234	2019-06-19 17:09:07 +02:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
ntf.c	nfc: drop unneeded debug prints	2021-10-11 17:00:51 -07:00
rsp.c	nfc: nci: fix the UAF of rf_conn_info object	2021-10-08 17:24:32 +01:00
spi.c	nfc: nci: constify several pointers to u8, sk_buff and other structs	2021-07-30 17:22:52 +02:00
uart.c	TTY / Serial driver update for 5.16-rc1	2021-11-04 09:09:37 -07:00