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| author |   Alexander Usyskin <alexander.usyskin@intel.com> | 2020-11-16 14:56:11 +0200 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-07 10:29:57 +0100 |
| commit | 85261c1ff156eb60fc26c378748387f2e85c6878 (patch) | |
| tree | 6e487243c332131f5c2fbd31f7b99f7fce924f66 /drivers/misc/mei/client.c | |
| parent | Merge tag 'soundwire-5.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/soundwire into char-misc-next (diff) | |
| download | linux-dev-85261c1ff156eb60fc26c378748387f2e85c6878.tar.xz linux-dev-85261c1ff156eb60fc26c378748387f2e85c6878.zip | |
mei: bus: add vtag support
Add API to support vtag in communication on mei bus.
Add mei_cldev_send_vtag, mei_cldev_recv_vtag and
mei_cldev_recv_nonblock_vtag functions to allow sending a message
with vtag set and to receive vtag of an incoming message.
Cc: Sean Z Huang <sean.z.huang@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Link: https://lore.kernel.org/r/20201116125612.1660971-1-tomas.winkler@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei/client.c')
| -rw-r--r-- | drivers/misc/mei/client.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/misc/mei/client.c b/drivers/misc/mei/client.c index d5c3f7d54634..a56d41321f32 100644 --- a/drivers/misc/mei/client.c +++ b/drivers/misc/mei/client.c @@ -1306,7 +1306,7 @@ struct mei_cl_vtag *mei_cl_vtag_alloc(struct file *fp, u8 vtag) * mei_cl_fp_by_vtag - obtain the file pointer by vtag * * @cl: host client - * @vtag: vm tag + * @vtag: virtual tag * * Return: * * A file pointer - on success @@ -1317,7 +1317,9 @@ const struct file *mei_cl_fp_by_vtag(const struct mei_cl *cl, u8 vtag) struct mei_cl_vtag *vtag_l; list_for_each_entry(vtag_l, &cl->vtag_map, list) - if (vtag_l->vtag == vtag) + /* The client on bus has one fixed fp */ + if ((cl->cldev && mei_cldev_enabled(cl->cldev)) || + vtag_l->vtag == vtag) return vtag_l->fp; return ERR_PTR(-ENOENT); |