From mboxrd@z Thu Jan 1 00:00:00 1970 From: vinod.koul@intel.com (Vinod Koul) Date: Mon, 30 Mar 2015 23:07:32 +0530 Subject: [PATCH 4/5] dmaengine: hsu: Fix memory leak when stopping a running transfer In-Reply-To: <1427457718.14897.428.camel@linux.intel.com> References: <1427456155-28990-1-git-send-email-peter.ujfalusi@ti.com> <1427456155-28990-5-git-send-email-peter.ujfalusi@ti.com> <1427457718.14897.428.camel@linux.intel.com> Message-ID: <20150330173732.GK7192@intel.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, Mar 27, 2015 at 02:01:58PM +0200, Andy Shevchenko wrote: > On Fri, 2015-03-27 at 13:35 +0200, Peter Ujfalusi wrote: > > The vd->node is removed from the lists when the transfer started so the > > vchan_get_all_descriptors() will not find it. This results memory leak. > > > > Acked-by: Andy Shevchenko Acked-by: Vinod Koul Greg, Please apply this in your queue for next -- Vinod > > Though this one would go via Greg's tty tree (Cc'ed) I think. > It becomes to regular work flow after 4.1-rc1. > > > > Signed-off-by: Peter Ujfalusi > > CC: Andy Shevchenko > > > --- > > drivers/dma/hsu/hsu.c | 5 ++++- > > 1 file changed, 4 insertions(+), 1 deletion(-) > > > > diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c > > index 683ba9b62795..d1864bda008f 100644 > > --- a/drivers/dma/hsu/hsu.c > > +++ b/drivers/dma/hsu/hsu.c > > @@ -387,7 +387,10 @@ static int hsu_dma_terminate_all(struct dma_chan *chan) > > spin_lock_irqsave(&hsuc->vchan.lock, flags); > > > > hsu_dma_stop_channel(hsuc); > > - hsuc->desc = NULL; > > + if (hsuc->desc) { > > + hsu_dma_desc_free(&hsuc->desc->vchan); > > + hsuc->desc = NULL; > > + } > > > > vchan_get_all_descriptors(&hsuc->vchan, &head); > > spin_unlock_irqrestore(&hsuc->vchan.lock, flags); > > > -- > Andy Shevchenko > Intel Finland Oy > --