* [PATCH] thermal: imx: fix a possible NULL dereference
@ 2016-08-16 8:51 LABBE Corentin
2016-08-19 13:17 ` Zhang Rui
0 siblings, 1 reply; 2+ messages in thread
From: LABBE Corentin @ 2016-08-16 8:51 UTC (permalink / raw)
To: rui.zhang, edubezval; +Cc: linux-pm, linux-kernel, LABBE Corentin
of_match_device could return NULL, and so cause a NULL pointer
dereference later at line 472:
data->socdata = of_id->data;
For fixing this problem, we use of_device_get_match_data(), this will
simplify the code a little by using a standard function for
getting the match data.
Reported-by: coverity (CID 1324128)
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
---
drivers/thermal/imx_thermal.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/thermal/imx_thermal.c b/drivers/thermal/imx_thermal.c
index c5547bd..e473548b 100644
--- a/drivers/thermal/imx_thermal.c
+++ b/drivers/thermal/imx_thermal.c
@@ -471,8 +471,6 @@ MODULE_DEVICE_TABLE(of, of_imx_thermal_match);
static int imx_thermal_probe(struct platform_device *pdev)
{
- const struct of_device_id *of_id =
- of_match_device(of_imx_thermal_match, &pdev->dev);
struct imx_thermal_data *data;
struct regmap *map;
int measure_freq;
@@ -490,7 +488,7 @@ static int imx_thermal_probe(struct platform_device *pdev)
}
data->tempmon = map;
- data->socdata = of_id->data;
+ data->socdata = of_device_get_match_data(&pdev->dev);
/* make sure the IRQ flag is clear before enabling irq on i.MX6SX */
if (data->socdata->version == TEMPMON_IMX6SX) {
--
2.7.3
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] thermal: imx: fix a possible NULL dereference
2016-08-16 8:51 [PATCH] thermal: imx: fix a possible NULL dereference LABBE Corentin
@ 2016-08-19 13:17 ` Zhang Rui
0 siblings, 0 replies; 2+ messages in thread
From: Zhang Rui @ 2016-08-19 13:17 UTC (permalink / raw)
To: LABBE Corentin, edubezval; +Cc: linux-pm, linux-kernel
On 二, 2016-08-16 at 10:51 +0200, LABBE Corentin wrote:
> of_match_device could return NULL, and so cause a NULL pointer
> dereference later at line 472:
> data->socdata = of_id->data;
>
> For fixing this problem, we use of_device_get_match_data(), this will
> simplify the code a little by using a standard function for
> getting the match data.
>
> Reported-by: coverity (CID 1324128)
> Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
patch applied.
thanks,
rui
> ---
> drivers/thermal/imx_thermal.c | 4 +---
> 1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/drivers/thermal/imx_thermal.c
> b/drivers/thermal/imx_thermal.c
> index c5547bd..e473548b 100644
> --- a/drivers/thermal/imx_thermal.c
> +++ b/drivers/thermal/imx_thermal.c
> @@ -471,8 +471,6 @@ MODULE_DEVICE_TABLE(of, of_imx_thermal_match);
>
> static int imx_thermal_probe(struct platform_device *pdev)
> {
> - const struct of_device_id *of_id =
> - of_match_device(of_imx_thermal_match, &pdev->dev);
> struct imx_thermal_data *data;
> struct regmap *map;
> int measure_freq;
> @@ -490,7 +488,7 @@ static int imx_thermal_probe(struct
> platform_device *pdev)
> }
> data->tempmon = map;
>
> - data->socdata = of_id->data;
> + data->socdata = of_device_get_match_data(&pdev->dev);
>
> /* make sure the IRQ flag is clear before enabling irq on
> i.MX6SX */
> if (data->socdata->version == TEMPMON_IMX6SX) {
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2016-08-19 13:17 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2016-08-16 8:51 [PATCH] thermal: imx: fix a possible NULL dereference LABBE Corentin
2016-08-19 13:17 ` Zhang Rui
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).