linux-kernel - [PATCH 29/32] dma40: handle failure to allocate first LCLA

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Date:	Tue, 25 Jan 2011 11:18:32 +0100
From:	Linus Walleij <linus.walleij@...ricsson.com>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	<linux-kernel@...r.kernel.org>, Lee Jones <lee.jones@...aro.org>,
	Rabin Vincent <rabin.vincent@...ricsson.com>,
	Linus Walleij <linus.walleij@...ricsson.com>
Subject: [PATCH 29/32] dma40: handle failure to allocate first LCLA

From: Rabin Vincent <rabin.vincent@...ricsson.com>

Acked-by: Per Forlin <per.forlin@...ricsson.com>
Acked-by: Jonas Aaberg <jonas.aberg@...ricsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@...ricsson.com>
Signed-off-by: Linus Walleij <linus.walleij@...ricsson.com>
---
 drivers/dma/ste_dma40.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 4ec96ac..b8cce85 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -538,6 +538,10 @@ static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
 			       curr_lcla);
 
 	lli_current++;
+
+	if (curr_lcla < 0)
+		goto out;
+
 	for (; lli_current < lli_len; lli_current++) {
 		unsigned int lcla_offset = chan->phy_chan->num * 1024 +
 					   8 * curr_lcla * 2;
@@ -567,6 +571,7 @@ static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
 		}
 	}
 
+out:
 	desc->lli_current = lli_current;
 }
 
-- 
1.7.3.2

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