Messages in this thread | | | From | Ioana Ciornei <> | Subject | RE: [PATCH 2/3] bus: fsl-mc: add root dprc rescan attribute | Date | Tue, 13 Mar 2018 09:59:23 +0000 |
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> > Introduce the rescan attribute as a device attribute to synchronize > > the fsl-mc bus objects and the MC firmware. > > > > To rescan the root dprc only, e.g. > > echo 1 > /sys/bus/fsl-mc/devices/dprc.1/rescan > > > > Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> > > --- > > drivers/bus/fsl-mc/dprc-driver.c | 4 ++-- > > drivers/bus/fsl-mc/fsl-mc-bus.c | 28 ++++++++++++++++++++++++++++ > > drivers/bus/fsl-mc/fsl-mc-private.h | 3 +++ > > 3 files changed, 33 insertions(+), 2 deletions(-) > > > > diff --git a/drivers/bus/fsl-mc/dprc-driver.c > > b/drivers/bus/fsl-mc/dprc-driver.c > > index 52c7e15..be80e3a 100644 > > --- a/drivers/bus/fsl-mc/dprc-driver.c > > +++ b/drivers/bus/fsl-mc/dprc-driver.c > > @@ -214,8 +214,8 @@ static void dprc_add_new_devices(struct > fsl_mc_device *mc_bus_dev, > > * populated before they can get allocation requests from probe callbacks > > * of the device drivers for the non-allocatable devices. > > */ > > -static int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, > > - unsigned int *total_irq_count) > > +int dprc_scan_objects(struct fsl_mc_device *mc_bus_dev, > > + unsigned int *total_irq_count) > > { > > int num_child_objects; > > int dprc_get_obj_failures; > > diff --git a/drivers/bus/fsl-mc/fsl-mc-bus.c > > b/drivers/bus/fsl-mc/fsl-mc-bus.c index 240b99d..763cbeb 100644 > > --- a/drivers/bus/fsl-mc/fsl-mc-bus.c > > +++ b/drivers/bus/fsl-mc/fsl-mc-bus.c > > @@ -137,8 +137,36 @@ static ssize_t modalias_show(struct device *dev, > > struct device_attribute *attr, } static DEVICE_ATTR_RO(modalias); > > > > +static ssize_t rescan_store(struct device *dev, > > + struct device_attribute *attr, > > + const char *buf, size_t count) { > > + struct fsl_mc_device *root_mc_dev; > > + struct fsl_mc_bus *root_mc_bus; > > + unsigned long val; > > + > > + if (!fsl_mc_is_root_dprc(dev)) > > + return -EINVAL; > > + > > + root_mc_dev = to_fsl_mc_device(dev); > > + root_mc_bus = to_fsl_mc_bus(root_mc_dev); > > + > > + if (kstrtoul(buf, 0, &val) < 0) > > + return -EINVAL; > > + > > + if (val) { > > + mutex_lock(&root_mc_bus->scan_mutex); > > + dprc_scan_objects(root_mc_dev, NULL); > > + mutex_unlock(&root_mc_bus->scan_mutex); > > + } > > + > > + return count; > > +} > > +static DEVICE_ATTR_WO(rescan); > > You did not add the correct new documentation in Documentation/ABI/ for > the new sysfs attributes you are creating. Please do so as part of this patch > series.
Sorry for that. Will add the proper Documentation in the next version.
Ioana
> > thanks, > > greg k-h
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