diff options
| author |   Alexander Usyskin <alexander.usyskin@intel.com> | 2016-06-16 17:58:58 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-08-30 14:36:39 +0200 |
| commit | a808c80cdaa83939b220176fcdffca8385d88ba6 (patch) | |
| tree | 7664d544ae5d32099384620a92d60bd1cdeeea3d /drivers/misc/mei/interrupt.c | |
| parent | mei: add file pointer to the host client structure (diff) | |
| download | linux-dev-a808c80cdaa83939b220176fcdffca8385d88ba6.tar.xz linux-dev-a808c80cdaa83939b220176fcdffca8385d88ba6.zip | |
mei: add read callback on demand for fixed_address clients
The Fixed address clients do not work with the flow control, and the
packet RX callback was allocated upon TX with anticipation of a
following RX. This won't work if the clients with unsolicited Rx. Rather
than preparing read callback upon a write we allocate one directly on
the reciev path if one doesn't exists.
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/interrupt.c')
| -rw-r--r-- | drivers/misc/mei/interrupt.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 8b5e4b4c4c15..44ba90140725 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -107,8 +107,14 @@ int mei_cl_irq_read_msg(struct mei_cl *cl, cb = list_first_entry_or_null(&cl->rd_pending, struct mei_cl_cb, list); if (!cb) { - cl_err(dev, cl, "pending read cb not found\n"); - goto out; + if (!mei_cl_is_fixed_address(cl)) { + cl_err(dev, cl, "pending read cb not found\n"); + goto out; + } + cb = mei_cl_alloc_cb(cl, mei_cl_mtu(cl), MEI_FOP_READ, cl->fp); + if (!cb) + goto out; + list_add_tail(&cb->list, &cl->rd_pending); } if (!mei_cl_is_connected(cl)) { |