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vfio/mtty: Use mdev_get_type_group_id()

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The type_group_id directly gives the single or dual port index, no
need for string searching.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Message-Id: <12-v2-d36939638fc6+d54-vfio2_jgg@nvidia.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
This commit is contained in:
Jason Gunthorpe 2021-04-06 16:40:35 -03:00 committed by Alex Williamson
parent 15fcc44be0
commit c594b26ff7
1 changed files with 7 additions and 43 deletions
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50
samples/vfio-mdev/mtty.c
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@ -711,23 +711,7 @@ accessfailed:
static int mtty_create(struct kobject *kobj, struct mdev_device *mdev)
{
struct mdev_state *mdev_state;
char name[MTTY_STRING_LEN];
int nr_ports = 0, i;
if (!mdev)
return -EINVAL;
for (i = 0; i < 2; i++) {
snprintf(name, MTTY_STRING_LEN, "%s-%d",
dev_driver_string(mdev_parent_dev(mdev)), i + 1);
if (!strcmp(kobj->name, name)) {
nr_ports = i + 1;
break;
}
}
if (!nr_ports)
return -EINVAL;
int nr_ports = mdev_get_type_group_id(mdev) + 1;
mdev_state = kzalloc(sizeof(struct mdev_state), GFP_KERNEL);
if (mdev_state == NULL)
@ -1311,18 +1295,11 @@ static const struct attribute_group *mdev_dev_groups[] = {
static ssize_t
name_show(struct kobject *kobj, struct device *dev, char *buf)
{
char name[MTTY_STRING_LEN];
int i;
const char *name_str[2] = {"Single port serial", "Dual port serial"};
static const char *name_str[2] = { "Single port serial",
"Dual port serial" };
for (i = 0; i < 2; i++) {
snprintf(name, MTTY_STRING_LEN, "%s-%d",
dev_driver_string(dev), i + 1);
if (!strcmp(kobj->name, name))
return sprintf(buf, "%s\n", name_str[i]);
}
return -EINVAL;
return sysfs_emit(buf, "%s\n",
name_str[mtype_get_type_group_id(kobj)]);
}
static MDEV_TYPE_ATTR_RO(name);
@ -1330,22 +1307,9 @@ static MDEV_TYPE_ATTR_RO(name);
static ssize_t
available_instances_show(struct kobject *kobj, struct device *dev, char *buf)
{
char name[MTTY_STRING_LEN];
int i;
struct mdev_state *mds;
int ports = 0, used = 0;
for (i = 0; i < 2; i++) {
snprintf(name, MTTY_STRING_LEN, "%s-%d",
dev_driver_string(dev), i + 1);
if (!strcmp(kobj->name, name)) {
ports = i + 1;
break;
}
}
if (!ports)
return -EINVAL;
unsigned int ports = mtype_get_type_group_id(kobj) + 1;
int used = 0;
list_for_each_entry(mds, &mdev_devices_list, next)
used += mds->nr_ports;