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| author | Russell King - ARM Linux <linux@arm.linux.org.uk> | 2011-01-03 22:31:45 +0000 |
|---|---|---|
| committer | Dan Williams <dan.j.williams@intel.com> | 2011-01-04 19:16:10 -0800 |
| commit | dafa73171be8dd31b485f5839e3376b1ca908e24 (patch) | |
| tree | 70d6d14b7be6543cbfe777a523c75dc0a332c402 /drivers/dma/amba-pl08x.c | |
| parent | bf072af461c166964fb110cfcafccd752fbb4c64 (diff) | |
| download | lwn-dafa73171be8dd31b485f5839e3376b1ca908e24.tar.gz lwn-dafa73171be8dd31b485f5839e3376b1ca908e24.zip | |
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>
Diffstat (limited to 'drivers/dma/amba-pl08x.c')
| -rw-r--r-- | drivers/dma/amba-pl08x.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 69cfb05e4d3c..b3b3180ce561 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -1332,9 +1332,10 @@ static int pl08x_prep_channel_resources(struct pl08x_dma_chan *plchan, 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); |