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abe13e9a56
linux/drivers/rpmsg
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Shengjiu Wang abe13e9a56 rpmsg: char: Add mutex protection for rpmsg_eptdev_open() 
There is no mutex protection for rpmsg_eptdev_open(),
especially for eptdev->ept read and write operation.
It may cause issues when multiple instances call
rpmsg_eptdev_open() in parallel,the return state
may be success or EBUSY.

Fixes: 964e8bedd5 ("rpmsg: char: Return an error if device already open")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Link: https://lore.kernel.org/r/1653104105-16779-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
2022-06-14 14:58:10 -06:00
..
Kconfig rpmsg: Move the rpmsg control device from rpmsg_char to rpmsg_ctrl 2022-03-13 11:49:53 -05:00
Makefile rpmsg: Move the rpmsg control device from rpmsg_char to rpmsg_ctrl 2022-03-13 11:49:53 -05:00
mtk_rpmsg.c rpmsg: Change naming of mediatek rpmsg property 2021-09-27 18:32:06 -05:00
qcom_glink_native.c rpmsg: Update rpmsg_chrdev_register_device function 2022-03-13 11:49:53 -05:00
qcom_glink_native.h rpmsg: glink: Switch to SPDX license identifier 2018-06-03 17:37:15 -07:00
qcom_glink_rpm.c rpmsg: glink: Switch to SPDX license identifier 2018-06-03 17:37:15 -07:00
qcom_glink_smem.c rpmsg: glink: Set tail pointer to 0 at end of FIFO 2019-10-11 11:34:12 -07:00
qcom_glink_ssr.c rpmsg: glink: add include of header file 2021-01-05 22:22:40 -06:00
qcom_smd.c rpmsg: qcom_smd: Fix returning 0 if irq_of_parse_and_map() fails 2022-04-28 14:32:15 -05:00
rpmsg_char.c rpmsg: char: Add mutex protection for rpmsg_eptdev_open() 2022-06-14 14:58:10 -06:00
rpmsg_char.h rpmsg: char: Export eptdev create and destroy functions 2022-03-13 11:49:53 -05:00
rpmsg_core.c rpmsg: use local 'dev' variable 2022-05-06 09:51:54 +02:00
rpmsg_ctrl.c rpmsg: ctrl: Introduce new RPMSG_CREATE/RELEASE_DEV_IOCTL controls 2022-03-13 11:49:53 -05:00
rpmsg_internal.h rpmsg: Fix calling device_lock() on non-initialized device 2022-05-06 09:51:33 +02:00
rpmsg_ns.c rpmsg: Fix calling device_lock() on non-initialized device 2022-05-06 09:51:33 +02:00
virtio_rpmsg_bus.c rpmsg: virtio: Fix the unregistration of the device rpmsg_ctrl 2022-04-26 09:27:15 -06:00