On 19/07/2017 at 18:48:27 +0100, Colin Ian King wrote:
> On 19/07/17 18:32, Alexandre Belloni wrote:
> > Hi,
> >
> > On 19/07/2017 at 17:57:02 +0100, Colin King wrote:
> >> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> >>
> >> There are two error return paths that do not kfree clk_data and
> >> we end up with a memory leak. Fix these with a kfree error exit
> >> path.
> >>
> >> Detected by CoverityScan, CID#1402959 ("Resource Leak")
> >>
> >
> > I think that patch fixes the same issue (and more):
> > http://patchwork.ozlabs.org/patch/787151/
>
> Yep, that's true.
>
Actually, I'm taking your patch now because it is the correct thing to
do.
> >
> >> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
> >> ---
> >> drivers/rtc/rtc-sun6i.c | 8 ++++++--
> >> 1 file changed, 6 insertions(+), 2 deletions(-)
> >>
> >> diff --git a/drivers/rtc/rtc-sun6i.c b/drivers/rtc/rtc-sun6i.c
> >> index 39cbc1238b92..61502221ab6e 100644
> >> --- a/drivers/rtc/rtc-sun6i.c
> >> +++ b/drivers/rtc/rtc-sun6i.c
> >> @@ -204,7 +204,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node)
> >> rtc->base = of_io_request_and_map(node, 0, of_node_full_name(node));
> >> if (IS_ERR(rtc->base)) {
> >> pr_crit("Can't map RTC registers");
> >> - return;
> >> + goto err;
> >> }
> >>
> >> /* Switch to the external, more precise, oscillator */
> >> @@ -216,7 +216,7 @@ static void __init sun6i_rtc_clk_init(struct device_node *node)
> >>
> >> /* Deal with old DTs */
> >> if (!of_get_property(node, "clocks", NULL))
> >> - return;
> >> + goto err;
> >>
> >> rtc->int_osc = clk_hw_register_fixed_rate_with_accuracy(NULL,
> >> "rtc-int-osc",
> >> @@ -246,6 +246,10 @@ static void __init sun6i_rtc_clk_init(struct device_node *node)
> >> clk_data->num = 1;
> >> clk_data->hws[0] = &rtc->hw;
> >> of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
> >> + return;
> >> +
> >> +err:
> >> + kfree(clk_data);
> >> }
> >> CLK_OF_DECLARE_DRIVER(sun6i_rtc_clk, "allwinner,sun6i-a31-rtc",
> >> sun6i_rtc_clk_init);
> >> --
> >> 2.11.0
> >>
> >
>
--
Alexandre Belloni, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com
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