Messages in this thread Patch in this message | | | Subject | [PATCH v3 1/5] libnvdimm: stop requiring a driver ->remove() method | From | Dan Williams <> | Date | Wed, 18 May 2016 13:56:11 -0700 |
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The dax_pmem driver was implementing an empty ->remove() method to satisfy the nvdimm bus driver that unconditionally calls ->remove(). Teach the core bus driver to check if ->remove() is NULL to remove that requirement.
Reported-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Dan Williams <dan.j.williams@intel.com> --- drivers/nvdimm/bus.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/drivers/nvdimm/bus.c b/drivers/nvdimm/bus.c index 97589e3cb852..7cbc3d58d176 100644 --- a/drivers/nvdimm/bus.c +++ b/drivers/nvdimm/bus.c @@ -124,9 +124,10 @@ static int nvdimm_bus_remove(struct device *dev) struct nd_device_driver *nd_drv = to_nd_device_driver(dev->driver); struct module *provider = to_bus_provider(dev); struct nvdimm_bus *nvdimm_bus = walk_to_nvdimm_bus(dev); - int rc; + int rc = 0; - rc = nd_drv->remove(dev); + if (nd_drv->remove) + rc = nd_drv->remove(dev); nd_region_disable(nvdimm_bus, dev); dev_dbg(&nvdimm_bus->dev, "%s.remove(%s) = %d\n", dev->driver->name, @@ -296,8 +297,8 @@ int __nd_driver_register(struct nd_device_driver *nd_drv, struct module *owner, return -EINVAL; } - if (!nd_drv->probe || !nd_drv->remove) { - pr_debug("->probe() and ->remove() must be specified\n"); + if (!nd_drv->probe) { + pr_debug("%s ->probe() must be specified\n", mod_name); return -EINVAL; }
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