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dmaengine/amba-pl08x: Check txd->llis_va before freeing dma_pool

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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>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This commit is contained in:
Viresh Kumar 2011-08-05 15:32:44 +05:30 committed by Vinod Koul
parent b7f69d9d42
commit c12056466d
1 changed files with 2 additions and 1 deletions
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3
drivers/dma/amba-pl08x.c
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@ -803,7 +803,8 @@ 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--;