[char-misc 1/3] mei: dma: silent the reject message

* [char-misc 1/3] mei: dma: silent the reject message
@ 2019-01-13 12:24 Tomas Winkler
  2019-01-13 12:24 ` [char-misc 2/3] mei: me: mark LBG devices as having dma support Tomas Winkler
  2019-01-13 12:24 ` [char-misc 3/3] mei: me: add denverton innovation engine device IDs Tomas Winkler
  0 siblings, 2 replies; 3+ messages in thread
From: Tomas Winkler @ 2019-01-13 12:24 UTC (permalink / raw)
  To: Greg Kroah-Hartman; +Cc: Alexander Usyskin, linux-kernel, Tomas Winkler, stable

Not all FW versions support DMA on their first release,
hence it is normal behavior to receive a reject response
upon DMA setup request.
In order to prevent confusion, the DMA setup reject message
is printed only in debug level.

Cc: <stable@vger.kernel.org> #v5.0+
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
---
 drivers/misc/mei/hbm.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/misc/mei/hbm.c b/drivers/misc/mei/hbm.c
index 78c26cebf5d4..8f7616557c97 100644
--- a/drivers/misc/mei/hbm.c
+++ b/drivers/misc/mei/hbm.c
@@ -1187,9 +1187,15 @@ int mei_hbm_dispatch(struct mei_device *dev, struct mei_msg_hdr *hdr)
 		dma_setup_res = (struct hbm_dma_setup_response *)mei_msg;
 
 		if (dma_setup_res->status) {
-			dev_info(dev->dev, "hbm: dma setup response: failure = %d %s\n",
-				 dma_setup_res->status,
-				 mei_hbm_status_str(dma_setup_res->status));
+			u8 status = dma_setup_res->status;
+
+			if (status == MEI_HBMS_NOT_ALLOWED) {
+				dev_dbg(dev->dev, "hbm: dma setup not allowed\n");
+			} else {
+				dev_info(dev->dev, "hbm: dma setup response: failure = %d %s\n",
+					 status,
+					 mei_hbm_status_str(status));
+			}
 			dev->hbm_f_dr_supported = 0;
 			mei_dmam_ring_free(dev);
 		}
-- 
2.20.1


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