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nvme: simplify nvme_dev_attrs_are_visible 

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Christoph Hellwig 2017-06-26 12:39:03 +02:00 committed by Jens Axboe
parent 180de00700
commit 49d3d50b0d
1 changed files with 4 additions and 11 deletions
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15
drivers/nvme/host/core.c
View File

@ -2191,23 +2191,16 @@ static struct attribute *nvme_dev_attrs[] = {
NULL
};
#define CHECK_ATTR(ctrl, a, name) \
if ((a) == &dev_attr_##name.attr && \
!(ctrl)->ops->get_##name) \
return 0
static umode_t nvme_dev_attrs_are_visible(struct kobject *kobj,
struct attribute *a, int n)
{
struct device *dev = container_of(kobj, struct device, kobj);
struct nvme_ctrl *ctrl = dev_get_drvdata(dev);
if (a == &dev_attr_delete_controller.attr) {
if (!ctrl->ops->delete_ctrl)
return 0;
}
CHECK_ATTR(ctrl, a, address);
if (a == &dev_attr_delete_controller.attr && !ctrl->ops->delete_ctrl)
return 0;
if (a == &dev_attr_address.attr && !ctrl->ops->get_address)
return 0;
return a->mode;
}