From: Russell King <rmk+kernel@arm.linux.org.uk>
Date: Sat, 26 May 2012 16:00:49 +0000 (+0100)
Subject: dmaengine: PL08x: ensure all descriptors are freed when channel is released
X-Git-Tag: v3.6-rc1~13^2^2
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a068682cd69461911407411b4198248a87c583e2;p=thirdparty%2Flinux.git

dmaengine: PL08x: ensure all descriptors are freed when channel is released

Ensure all queued descriptors are freed when the channel is released,
ensuring we don't leak memory

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index a5d85b101b894..6fbeebb9486fd 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -1117,6 +1117,8 @@ static int pl08x_alloc_chan_resources(struct dma_chan *chan)
 
 static void pl08x_free_chan_resources(struct dma_chan *chan)
 {
+	/* Ensure all queued descriptors are freed */
+	vchan_free_chan_resources(to_virt_chan(chan));
 }
 
 static struct dma_async_tx_descriptor *pl08x_prep_dma_interrupt(