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| author | Jag Raman <jag.raman@oracle.com> | 2017-06-23 20:58:35 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-25 22:43:13 +0200 |
| commit | e2169a32b4f03b926905be029169a8b9f0750a67 (patch) | |
| tree | 9414c2ed4904caaf7e5b5785159d6c924dab483f /arch/sparc/kernel/vio.c | |
| parent | sparc64: add MDESC node name property to VIO device metadata (diff) | |
| download | linux-e2169a32b4f03b926905be029169a8b9f0750a67.tar.xz linux-e2169a32b4f03b926905be029169a8b9f0750a67.zip | |
sparc64: refactor code to obtain cfg_handle property from MDESC
Refactors code to get the cfg_handle property of a node from Machine
Description (MDESC)
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Reviewed-by: Shannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/kernel/vio.c')
| -rw-r--r-- | arch/sparc/kernel/vio.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/arch/sparc/kernel/vio.c b/arch/sparc/kernel/vio.c index f37937b95dbf..1ac5da12ac2b 100644 --- a/arch/sparc/kernel/vio.c +++ b/arch/sparc/kernel/vio.c @@ -181,6 +181,24 @@ static struct device_node *cdev_node; static struct vio_dev *root_vdev; static u64 cdev_cfg_handle; +static const u64 *vio_cfg_handle(struct mdesc_handle *hp, u64 node) +{ + const u64 *cfg_handle = NULL; + u64 a; + + mdesc_for_each_arc(a, hp, node, MDESC_ARC_TYPE_BACK) { + u64 target; + + target = mdesc_arc_target(hp, a); + cfg_handle = mdesc_get_property(hp, target, + "cfg-handle", NULL); + if (cfg_handle) + break; + } + + return cfg_handle; +} + static void vio_fill_channel_info(struct mdesc_handle *hp, u64 mp, struct vio_dev *vdev) { @@ -227,7 +245,6 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp, struct vio_dev *vdev; int err, tlen, clen; const u64 *id, *cfg_handle; - u64 a; type = mdesc_get_property(hp, mp, "device-type", &tlen); if (!type) { @@ -245,16 +262,7 @@ static struct vio_dev *vio_create_one(struct mdesc_handle *hp, u64 mp, id = mdesc_get_property(hp, mp, "id", NULL); - cfg_handle = NULL; - mdesc_for_each_arc(a, hp, mp, MDESC_ARC_TYPE_BACK) { - u64 target; - - target = mdesc_arc_target(hp, a); - cfg_handle = mdesc_get_property(hp, target, - "cfg-handle", NULL); - if (cfg_handle) - break; - } + cfg_handle = vio_cfg_handle(hp, mp); bus_id_name = type; if (!strcmp(type, "domain-services-port")) |