PERM_WRITE
if ((pinfo->capability & PERM_WRITE) != PERM_WRITE &&
perm |= PERM_WRITE;
if (perm & PERM_WRITE) {
mdev->opened |= PERM_WRITE;
if (mdev->opened & PERM_WRITE) {
if (mdev->opened & PERM_WRITE)
if (mdev->opened & PERM_WRITE) {
val &= PERM_READ|PERM_WRITE;
if (val == (PERM_READ|PERM_WRITE))
else if (val == PERM_WRITE)