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From:   Jason Wang <jasowang@redhat.com>
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Subject: [PATCH V5 2/6] modpost: add support for mdev class id
Date:   Wed, 23 Oct 2019 21:07:48 +0800
Message-Id: <20191023130752.18980-3-jasowang@redhat.com>
In-Reply-To: <20191023130752.18980-1-jasowang@redhat.com>
References: <20191023130752.18980-1-jasowang@redhat.com>
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Add support to parse mdev class id table.

Reviewed-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
---
 drivers/vfio/mdev/vfio_mdev.c     |  2 ++
 scripts/mod/devicetable-offsets.c |  3 +++
 scripts/mod/file2alias.c          | 10 ++++++++++
 3 files changed, 15 insertions(+)

diff --git a/drivers/vfio/mdev/vfio_mdev.c b/drivers/vfio/mdev/vfio_mdev.c
index 7b24ee9cb8dd..cb701cd646f0 100644
--- a/drivers/vfio/mdev/vfio_mdev.c
+++ b/drivers/vfio/mdev/vfio_mdev.c
@@ -125,6 +125,8 @@ static const struct mdev_class_id id_table[] =3D {
 =09{ 0 },
 };
=20
+MODULE_DEVICE_TABLE(mdev, id_table);
+
 static struct mdev_driver vfio_mdev_driver =3D {
 =09.name=09=3D "vfio_mdev",
 =09.probe=09=3D vfio_mdev_probe,
diff --git a/scripts/mod/devicetable-offsets.c b/scripts/mod/devicetable-of=
fsets.c
index 054405b90ba4..6cbb1062488a 100644
--- a/scripts/mod/devicetable-offsets.c
+++ b/scripts/mod/devicetable-offsets.c
@@ -231,5 +231,8 @@ int main(void)
 =09DEVID(wmi_device_id);
 =09DEVID_FIELD(wmi_device_id, guid_string);
=20
+=09DEVID(mdev_class_id);
+=09DEVID_FIELD(mdev_class_id, id);
+
 =09return 0;
 }
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index c91eba751804..d365dfe7c718 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -1335,6 +1335,15 @@ static int do_wmi_entry(const char *filename, void *=
symval, char *alias)
 =09return 1;
 }
=20
+/* looks like: "mdev:cN" */
+static int do_mdev_entry(const char *filename, void *symval, char *alias)
+{
+=09DEF_FIELD(symval, mdev_class_id, id);
+
+=09sprintf(alias, "mdev:c%02X", id);
+=09return 1;
+}
+
 /* Does namelen bytes of name exactly match the symbol? */
 static bool sym_is(const char *name, unsigned namelen, const char *symbol)
 {
@@ -1407,6 +1416,7 @@ static const struct devtable devtable[] =3D {
 =09{"typec", SIZE_typec_device_id, do_typec_entry},
 =09{"tee", SIZE_tee_client_device_id, do_tee_entry},
 =09{"wmi", SIZE_wmi_device_id, do_wmi_entry},
+=09{"mdev", SIZE_mdev_class_id, do_mdev_entry},
 };
=20
 /* Create MODULE_ALIAS() statements.
--=20
2.19.1