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[V2,19/20] dmaengine/amba-pl08x: Check txd->llis_va before freeing dma_pool

Message ID ac7230fffb2629b8a745b90d6c2d6e6d59d78794.1312190882.git.viresh.kumar@st.com (mailing list archive)
State New, archived
Headers show

Commit Message

Viresh KUMAR Aug. 1, 2011, 9:37 a.m. UTC 
In pl08x_free_txd(), check if pool is allocated successfully before freeing it.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
---
 drivers/dma/amba-pl08x.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
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Patch

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index adc8a36..2667e0d 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -796,7 +796,8 @@  static void pl08x_free_txd(struct pl08x_driver_data *pl08x,
 	struct pl08x_sg *dsg, *_dsg;
 
 	/* Free the LLI */
-	dma_pool_free(pl08x->pool, txd->llis_va, txd->llis_bus);
+	if (txd->llis_va)
+		dma_pool_free(pl08x->pool, txd->llis_va, txd->llis_bus);
 
 	pl08x->pool_ctr--;