mei: add mei_hbuf_acquire wrapper
A client has to acquire host buffer
before writing, we add lock like wrapper
to replace the code snippet
if (dev->hbuf_is_ready)
dev->hbuf_is_ready = false;
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/mei/hw-txe.c b/drivers/misc/mei/hw-txe.c
index 49a5ed3..8f5e4be 100644
--- a/drivers/misc/mei/hw-txe.c
+++ b/drivers/misc/mei/hw-txe.c
@@ -605,7 +605,6 @@
mei_txe_input_payload_write(dev, i + 1, reg);
}
- dev->hbuf_is_ready = false;
/* Set Input-Doorbell */
mei_txe_input_doorbell_set(hw);
@@ -983,20 +982,16 @@
dev->hbuf_is_ready = true;
if (hw->aliveness && dev->hbuf_is_ready) {
- /* if SeC did not complete reading the written data by host */
- if (!mei_txe_is_input_ready(dev)) {
- dev_dbg(&dev->pdev->dev, "got Input Ready Int, but SEC_IPC_INPUT_STATUS_RDY is 0.\n");
- goto end;
- }
+ /* get the real register value */
+ dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
rets = mei_irq_write_handler(dev, &complete_list);
- if (rets)
- dev_err(&dev->pdev->dev,
- "mei_irq_write_handler ret = %d.\n", rets);
+ if (rets && rets != -EMSGSIZE)
+ dev_err(&dev->pdev->dev, "mei_irq_write_handler ret = %d.\n",
+ rets);
+ dev->hbuf_is_ready = mei_hbuf_is_ready(dev);
}
-
-
mei_irq_compl_handler(dev, &complete_list);
end: