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mei: do not override a client writing state when buffering

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when we buffer write request we should not switch to
MEI_WRITING since this will override MEI_WRITE_COMPLETE
state of preceding write

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler 2013-06-23 09:37:00 +03:00 • committed by Greg Kroah-Hartman
commit 4dfaa9f702
1 changed files with 2 additions and 1 deletions
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3
drivers/misc/mei/client.c
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@ -731,7 +731,9 @@ int mei_cl_irq_write_complete(struct mei_cl *cl, struct mei_cl_cb *cb,
} }
cl->status = 0; cl->status = 0;
cl->writing_state = MEI_WRITING;
cb->buf_idx += mei_hdr.length; cb->buf_idx += mei_hdr.length;
if (mei_hdr.msg_complete) { if (mei_hdr.msg_complete) {
if (mei_cl_flow_ctrl_reduce(cl)) if (mei_cl_flow_ctrl_reduce(cl))
return -ENODEV; return -ENODEV;
@ -783,7 +785,6 @@ int mei_cl_write(struct mei_cl *cl, struct mei_cl_cb *cb, bool blocking)
cb->buf_idx = 0; cb->buf_idx = 0;
/* unseting complete will enqueue the cb for write */ /* unseting complete will enqueue the cb for write */
mei_hdr.msg_complete = 0; mei_hdr.msg_complete = 0;
cl->writing_state = MEI_WRITING;
rets = buf->size; rets = buf->size;
goto out; goto out;
} }