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| author | Dan Williams <dan.j.williams@intel.com> | 2016-05-18 18:13:13 +0200 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2016-05-18 18:13:13 +0200 |
| commit | 6cf9c5babd980ec1959e0dd45e3036474c6a294f (patch) | |
| tree | e8a059c5a7d85ab61d918725aae3c5c487762fe2 /drivers/nvdimm | |
| parent | libnvdimm, dax: record the specified alignment of a dax-device instance (diff) | |
| download | linux-6cf9c5babd980ec1959e0dd45e3036474c6a294f.tar.xz linux-6cf9c5babd980ec1959e0dd45e3036474c6a294f.zip | |
libnvdimm: stop requiring a driver ->remove() method
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>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'drivers/nvdimm')
| -rw-r--r-- | drivers/nvdimm/bus.c | 9 |
1 files 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; } |