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

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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);