The mbochs_types array is parallel to the supported_type_groups array, so the type_group_id indexes both. Instead of doing string searching just directly index with type_group_id in all places. Reviewed-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> --- samples/vfio-mdev/mbochs.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-) diff --git a/samples/vfio-mdev/mbochs.c b/samples/vfio-mdev/mbochs.c index 365afbe2dea558..a1af30df10a2ee 100644 --- a/samples/vfio-mdev/mbochs.c +++ b/samples/vfio-mdev/mbochs.c @@ -205,16 +205,6 @@ static struct page *__mbochs_get_page(struct mdev_state *mdev_state, static struct page *mbochs_get_page(struct mdev_state *mdev_state, pgoff_t pgoff); -static const struct mbochs_type *mbochs_find_type(struct kobject *kobj) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(mbochs_types); i++) - if (strcmp(mbochs_types[i].name, kobj->name) == 0) - return mbochs_types + i; - return NULL; -} - static void mbochs_create_config_space(struct mdev_state *mdev_state) { STORE_LE16((u16 *) &mdev_state->vconfig[PCI_VENDOR_ID], @@ -518,7 +508,8 @@ static int mbochs_reset(struct mdev_device *mdev) static int mbochs_create(struct kobject *kobj, struct mdev_device *mdev) { - const struct mbochs_type *type = mbochs_find_type(kobj); + const struct mbochs_type *type = + &mbochs_types[mdev_get_type_group_id(mdev)]; struct device *dev = mdev_dev(mdev); struct mdev_state *mdev_state; @@ -544,7 +535,7 @@ static int mbochs_create(struct kobject *kobj, struct mdev_device *mdev) goto err_mem; dev_info(dev, "%s: %s, %d MB, %ld pages\n", __func__, - kobj->name, type->mbytes, mdev_state->pagecount); + type->name, type->mbytes, mdev_state->pagecount); mutex_init(&mdev_state->ops_lock); mdev_state->mdev = mdev; @@ -1349,7 +1340,8 @@ static MDEV_TYPE_ATTR_RO(name); static ssize_t description_show(struct kobject *kobj, struct device *dev, char *buf) { - const struct mbochs_type *type = mbochs_find_type(kobj); + const struct mbochs_type *type = + &mbochs_types[mtype_get_type_group_id(kobj)]; return sprintf(buf, "virtual display, %d MB video memory\n", type ? type->mbytes : 0); @@ -1359,7 +1351,8 @@ static MDEV_TYPE_ATTR_RO(description); static ssize_t available_instances_show(struct kobject *kobj, struct device *dev, char *buf) { - const struct mbochs_type *type = mbochs_find_type(kobj); + const struct mbochs_type *type = + &mbochs_types[mtype_get_type_group_id(kobj)]; int count = (max_mbytes - mbochs_used_mbytes) / type->mbytes; return sprintf(buf, "%d\n", count); -- 2.31.1