ARM: PL08x: fix a leak when preparing TXDs
If we fail to allocate the LLI, the prep_* function will return NULL.
However, the TXD we allocated will not be placed on any list, nor
will it be freed - we'll just drop all references to it. Make sure
we free it rather than leaking TXDs.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 69cfb05..b3b3180 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -1332,9 +1332,10 @@
int ret;
num_llis = pl08x_fill_llis_for_desc(pl08x, txd);
-
- if (!num_llis)
+ if (!num_llis) {
+ kfree(txd);
return -EINVAL;
+ }
spin_lock_irqsave(&plchan->lock, plchan->lockflags);