| Message ID | 20200826164529.224476-12-mathieu.poirier@linaro.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | remoteproc: Add support for detaching from rproc | expand |
> Subject: [PATCH 11/13] remoteproc: Properly deal with detach request > > This patch introduces the capability to detach a remote processor that has > been attached to or booted by the remoteproc core. For that to happen a > rproc::ops::detach() operation need to be available. > > Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> > --- > drivers/remoteproc/remoteproc_cdev.c | 6 ++++++ > drivers/remoteproc/remoteproc_sysfs.c | 6 ++++++ > 2 files changed, 12 insertions(+) > > diff --git a/drivers/remoteproc/remoteproc_cdev.c > b/drivers/remoteproc/remoteproc_cdev.c > index d06f8d4919c7..3a3830e27050 100644 > --- a/drivers/remoteproc/remoteproc_cdev.c > +++ b/drivers/remoteproc/remoteproc_cdev.c > @@ -42,6 +42,12 @@ static ssize_t rproc_cdev_write(struct file *filp, const > char __user *buf, size_ > return -EINVAL; > > ret = rproc_shutdown(rproc); > + } else if (!strncmp(cmd, "detach", len)) { > + if (rproc->state != RPROC_RUNNING && > + rproc->state != RPROC_ATTACHED) > + return -EINVAL; > + > + ret = rproc_detach(rproc); > } else { > dev_err(&rproc->dev, "Unrecognized option\n"); > ret = -EINVAL; > diff --git a/drivers/remoteproc/remoteproc_sysfs.c > b/drivers/remoteproc/remoteproc_sysfs.c > index 6134d2f083ce..013231f69837 100644 > --- a/drivers/remoteproc/remoteproc_sysfs.c > +++ b/drivers/remoteproc/remoteproc_sysfs.c > @@ -118,6 +118,12 @@ static ssize_t state_store(struct device *dev, > return -EINVAL; > > ret = rproc_shutdown(rproc); > + } else if (sysfs_streq(buf, "detach")) { > + if (rproc->state != RPROC_RUNNING && > + rproc->state != RPROC_ATTACHED) > + return -EINVAL; > + > + ret = rproc_detach(rproc); > } else { > dev_err(&rproc->dev, "Unrecognised option: %s\n", buf); > ret = -EINVAL; > -- Reviewed-by: Peng Fan <peng.fan@nxp.com>
diff --git a/drivers/remoteproc/remoteproc_cdev.c b/drivers/remoteproc/remoteproc_cdev.c index d06f8d4919c7..3a3830e27050 100644 --- a/drivers/remoteproc/remoteproc_cdev.c +++ b/drivers/remoteproc/remoteproc_cdev.c @@ -42,6 +42,12 @@ static ssize_t rproc_cdev_write(struct file *filp, const char __user *buf, size_ return -EINVAL; ret = rproc_shutdown(rproc); + } else if (!strncmp(cmd, "detach", len)) { + if (rproc->state != RPROC_RUNNING && + rproc->state != RPROC_ATTACHED) + return -EINVAL; + + ret = rproc_detach(rproc); } else { dev_err(&rproc->dev, "Unrecognized option\n"); ret = -EINVAL; diff --git a/drivers/remoteproc/remoteproc_sysfs.c b/drivers/remoteproc/remoteproc_sysfs.c index 6134d2f083ce..013231f69837 100644 --- a/drivers/remoteproc/remoteproc_sysfs.c +++ b/drivers/remoteproc/remoteproc_sysfs.c @@ -118,6 +118,12 @@ static ssize_t state_store(struct device *dev, return -EINVAL; ret = rproc_shutdown(rproc); + } else if (sysfs_streq(buf, "detach")) { + if (rproc->state != RPROC_RUNNING && + rproc->state != RPROC_ATTACHED) + return -EINVAL; + + ret = rproc_detach(rproc); } else { dev_err(&rproc->dev, "Unrecognised option: %s\n", buf); ret = -EINVAL;
This patch introduces the capability to detach a remote processor that has been attached to or booted by the remoteproc core. For that to happen a rproc::ops::detach() operation need to be available. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> --- drivers/remoteproc/remoteproc_cdev.c | 6 ++++++ drivers/remoteproc/remoteproc_sysfs.c | 6 ++++++ 2 files changed, 12 insertions(+)