linux-kernel - [PATCH 43/49] Staging: poch: Fix user space protocol syncing

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Message-Id: <1225320016-21803-43-git-send-email-greg@kroah.com>
Date:	Wed, 29 Oct 2008 15:40:10 -0700
From:	Greg KH <greg@...ah.com>
To:	linux-kernel@...r.kernel.org
Cc:	"vijaykumar@...vegnu.org" <vijaykumar@...vegnu.org>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 43/49] Staging: poch: Fix user space protocol syncing

From: vijaykumar@...vegnu.org <vijaykumar@...vegnu.org>

Always set the user space offset from kernel space, to indicate group
transmitted/received.

Signed-off-by: Vijay Kumar <vijaykumar@...vegnu.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/staging/poch/poch.c |   14 ++------------
 1 files changed, 2 insertions(+), 12 deletions(-)

diff --git a/drivers/staging/poch/poch.c b/drivers/staging/poch/poch.c
index 0a3eca1..3ecbd7c 100644
--- a/drivers/staging/poch/poch.c
+++ b/drivers/staging/poch/poch.c
@@ -948,14 +948,7 @@ static int poch_channel_available(struct channel_info *channel)
 	spin_lock_irq(&channel->group_offsets_lock);
 
 	for (i = 0; i < channel->group_count; i++) {
-		if (channel->dir == CHANNEL_DIR_RX
-		    && channel->header->group_offsets[i] == -1) {
-			spin_unlock_irq(&channel->group_offsets_lock);
-			return 1;
-		}
-
-		if (channel->dir == CHANNEL_DIR_TX
-		    && channel->header->group_offsets[i] != -1) {
+		if (channel->header->group_offsets[i] != -1) {
 			spin_unlock_irq(&channel->group_offsets_lock);
 			return 1;
 		}
@@ -1103,10 +1096,7 @@ static void poch_irq_dma(struct channel_info *channel)
 
 	for (i = 0; i < groups_done; i++) {
 		j = (prev_transfer + i) % channel->group_count;
-		if (channel->dir == CHANNEL_DIR_RX)
-			group_offsets[j] = -1;
-		else
-			group_offsets[j] = groups[j].user_offset;
+		group_offsets[j] = groups[j].user_offset;
 	}
 
 	spin_unlock(&channel->group_offsets_lock);
-- 
1.6.0.2

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