Add new state RPROC_DELETED to handle synchronization between rproc_del() and other operations on rproc. This state represents the rproc device that has been "deleted".
CC: Loic Pallardy <loic.palla...@st.com> CC: Bjorn Andersson <bjorn.anders...@linaro.org> Signed-off-by: Sarangdhar Joshi <spjo...@codeaurora.org> --- The current patch series is a v2 version of original patch listed at https://lkml.org/lkml/2016/12/16/534 Changes from v1: * Add new RPROC_DELETED state * Use the new state RPROC_DELETED to handle race between rproc_del() and rproc_boot() drivers/remoteproc/remoteproc_sysfs.c | 1 + include/linux/remoteproc.h | 4 +++- 2 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c index bc5b0e0..47be411 100644 --- a/drivers/remoteproc/remoteproc_sysfs.c +++ b/drivers/remoteproc/remoteproc_sysfs.c @@ -73,6 +73,7 @@ static ssize_t firmware_store(struct device *dev, [RPROC_SUSPENDED] = "suspended", [RPROC_RUNNING] = "running", [RPROC_CRASHED] = "crashed", + [RPROC_DELETED] = "deleted", [RPROC_LAST] = "invalid", }; diff --git a/include/linux/remoteproc.h b/include/linux/remoteproc.h index e2f3a32..25a8c37 100644 --- a/include/linux/remoteproc.h +++ b/include/linux/remoteproc.h @@ -346,6 +346,7 @@ struct rproc_ops { * a message. * @RPROC_RUNNING: device is up and running * @RPROC_CRASHED: device has crashed; need to start recovery + * @RPROC_DELETED: device is deleted * @RPROC_LAST: just keep this one at the end * * Please note that the values of these states are used as indices @@ -359,7 +360,8 @@ enum rproc_state { RPROC_SUSPENDED = 1, RPROC_RUNNING = 2, RPROC_CRASHED = 3, - RPROC_LAST = 4, + RPROC_DELETED = 4, + RPROC_LAST = 5, }; /** -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
