netdev - [net 2/3] caif-hsi: Bugfix - Piggyback'ed embedded CAIF frame lost

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Date:	Sun, 24 Jun 2012 23:01:37 +0200
From:	sjur.brandeland@...ricsson.com
To:	davem@...emloft.net
Cc:	netdev@...r.kernel.org, sjurbren@...il.com,
	Per Ellefsen <Per.Ellefsen@...ricsson.com>,
	Per Ellefsen <per.ellefsen@...ricsson.com>,
	Sjur Brændeland <sjur.brandeland@...ricsson.com>
Subject: [net 2/3] caif-hsi: Bugfix - Piggyback'ed embedded CAIF frame lost

From: Per Ellefsen <Per.Ellefsen@...ricsson.com>

When receiving a piggyback'ed descriptor containing an
embedded frame, but no payload, the embedded frame was
lost.

Signed-off-by: Per Ellefsen <per.ellefsen@...ricsson.com>
Signed-off-by: Sjur Brændeland <sjur.brandeland@...ricsson.com>
---
 drivers/net/caif/caif_hsi.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/caif/caif_hsi.c b/drivers/net/caif/caif_hsi.c
index 1520814..1f52ff3 100644
--- a/drivers/net/caif/caif_hsi.c
+++ b/drivers/net/caif/caif_hsi.c
@@ -693,8 +693,6 @@ static void cfhsi_rx_done(struct cfhsi *cfhsi)
 			 */
 			memcpy(rx_buf, (u8 *)piggy_desc,
 					CFHSI_DESC_SHORT_SZ);
-			/* Mark no embedded frame here */
-			piggy_desc->offset = 0;
 			if (desc_pld_len == -EPROTO)
 				goto out_of_sync;
 		}
@@ -737,6 +735,8 @@ static void cfhsi_rx_done(struct cfhsi *cfhsi)
 			/* Extract any payload in piggyback descriptor. */
 			if (cfhsi_rx_desc(piggy_desc, cfhsi) < 0)
 				goto out_of_sync;
+			/* Mark no embedded frame after extracting it */
+			piggy_desc->offset = 0;
 		}
 	}
 
-- 
1.7.5.4

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