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| author | Alexander Usyskin <alexander.usyskin@intel.com> | 2016-02-07 23:35:25 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-07 14:47:20 -0800 |
| commit | 5cf8b2a9be0abec35f675bc719ca6eba9e559b1d (patch) | |
| tree | 93add494a6fa86a19593f8ef50eb414b57e74a3c /drivers/misc/mei | |
| parent | 62e8e6ad60975df491d886efaa7fe0aa832947fb (diff) | |
| download | linux-5cf8b2a9be0abec35f675bc719ca6eba9e559b1d.tar.bz2 | |
mei: amthif: allow only one request at a time
A next amthif write can be executed only after the previous one has
completed.
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/misc/mei')
| -rw-r--r-- | drivers/misc/mei/amthif.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/misc/mei/amthif.c b/drivers/misc/mei/amthif.c index 647edc68884f..4383a9ad9208 100644 --- a/drivers/misc/mei/amthif.c +++ b/drivers/misc/mei/amthif.c @@ -315,6 +315,14 @@ int mei_amthif_write(struct mei_cl *cl, struct mei_cl_cb *cb) dev = cl->dev; list_add_tail(&cb->list, &dev->amthif_cmd_list.list); + + /* + * The previous request is still in processing, queue this one. + */ + if (dev->iamthif_state > MEI_IAMTHIF_IDLE && + dev->iamthif_state < MEI_IAMTHIF_READ_COMPLETE) + return 0; + return mei_amthif_run_next_cmd(dev); } |