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mei: prepare read cb for fixed address clients on the receive path only. 

The read callbacks for the fixed address clients, that don't have flow
control are built now on the receive path. In order to have a single
allocation place we remove the allocation from the read request.

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>
This commit is contained in:
Alexander Usyskin 2016-07-26 01:06:02 +03:00 committed by Greg Kroah-Hartman
parent dfe5f753d0
commit e51dfa5a7f
1 changed files with 3 additions and 5 deletions
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8
drivers/misc/mei/client.c
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@ -1459,17 +1459,15 @@ int mei_cl_read_start(struct mei_cl *cl, size_t length, const struct file *fp)
return -ENOTTY;
}
if (mei_cl_is_fixed_address(cl))
return 0;
/* always allocate at least client max message */
length = max_t(size_t, length, mei_cl_mtu(cl));
cb = mei_cl_alloc_cb(cl, length, MEI_FOP_READ, fp);
if (!cb)
return -ENOMEM;
if (mei_cl_is_fixed_address(cl)) {
list_add_tail(&cb->list, &cl->rd_pending);
return 0;
}
rets = pm_runtime_get(dev->dev);
if (rets < 0 && rets != -EINPROGRESS) {
pm_runtime_put_noidle(dev->dev);