2015-12-29 18:59:13

by Insu Yun

[permalink] [raw]
Subject: [PATCH] i915: correctly handling failed allocation

Signed-off-by: Insu Yun <[email protected]>
---
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
index a5e99ac..4e279dd 100644
--- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
+++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
@@ -666,6 +666,8 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)

/* This is cheating a bit with the cleanup. */
vbt_panel = devm_kzalloc(dev->dev, sizeof(*vbt_panel), GFP_KERNEL);
+ if (!vbt_pannel)
+ return NULL;

vbt_panel->intel_dsi = intel_dsi;
drm_panel_init(&vbt_panel->panel);
--
1.9.1


2015-12-29 19:08:36

by kernel test robot

[permalink] [raw]
Subject: Re: [PATCH] i915: correctly handling failed allocation

Hi Insu,

[auto build test ERROR on drm-intel/for-linux-next]
[also build test ERROR on v4.4-rc7 next-20151223]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url: https://github.com/0day-ci/linux/commits/Insu-Yun/i915-correctly-handling-failed-allocation/20151230-030043
base: git://anongit.freedesktop.org/drm-intel for-linux-next
config: x86_64-randconfig-x008-12291635 (attached as .config)
reproduce:
# save the attached .config to linux build tree
make ARCH=x86_64

All errors (new ones prefixed by >>):

drivers/gpu/drm/i915/intel_dsi_panel_vbt.c: In function 'vbt_panel_init':
>> drivers/gpu/drm/i915/intel_dsi_panel_vbt.c:669:7: error: 'vbt_pannel' undeclared (first use in this function)
if (!vbt_pannel)
^
drivers/gpu/drm/i915/intel_dsi_panel_vbt.c:669:7: note: each undeclared identifier is reported only once for each function it appears in

vim +/vbt_pannel +669 drivers/gpu/drm/i915/intel_dsi_panel_vbt.c

663 intel_dsi->panel_on_delay = pps->panel_on_delay / 10;
664 intel_dsi->panel_off_delay = pps->panel_off_delay / 10;
665 intel_dsi->panel_pwr_cycle_delay = pps->panel_power_cycle_delay / 10;
666
667 /* This is cheating a bit with the cleanup. */
668 vbt_panel = devm_kzalloc(dev->dev, sizeof(*vbt_panel), GFP_KERNEL);
> 669 if (!vbt_pannel)
670 return NULL;
671
672 vbt_panel->intel_dsi = intel_dsi;

---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation


Attachments:
(No filename) (1.58 kB)
.config.gz (32.07 kB)
Download all attachments

2015-12-30 09:17:06

by Jani Nikula

[permalink] [raw]
Subject: Re: [PATCH] i915: correctly handling failed allocation

On Tue, 29 Dec 2015, Insu Yun <[email protected]> wrote:
> Signed-off-by: Insu Yun <[email protected]>
> ---
> drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> index a5e99ac..4e279dd 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> @@ -666,6 +666,8 @@ struct drm_panel *vbt_panel_init(struct intel_dsi *intel_dsi, u16 panel_id)
>
> /* This is cheating a bit with the cleanup. */
> vbt_panel = devm_kzalloc(dev->dev, sizeof(*vbt_panel), GFP_KERNEL);
> + if (!vbt_pannel)
> + return NULL;

We have build bots and CI, but the least you must do is build the code
you change before submitting patches.

BR,
Jani.


>
> vbt_panel->intel_dsi = intel_dsi;
> drm_panel_init(&vbt_panel->panel);

--
Jani Nikula, Intel Open Source Technology Center