diff options
author | Shreshtha Sahu <ssahu@nvidia.com> | 2013-08-01 16:14:59 +0530 |
---|---|---|
committer | Matthew Pedro <mapedro@nvidia.com> | 2013-08-07 10:09:49 -0700 |
commit | af42f432f683430df34a2a2ba084492daaae0a5c (patch) | |
tree | 8fa47c7ce091efab1add28f0eca6d34961dfc4ee /drivers/media/video/tegra/ad5816.c | |
parent | b358015d5dc66e1c2de23f68aeb6b53d485f1365 (diff) |
media: video: tegra: fix miscdevice registeration nametegra-l4t-r17.1tegra-l4t-r17-17r1
Allocate driver name string in info struct, rather than passing
a pointer to a stack allocated array when registering a miscdevice.
This prevents 'cat /proc/misc' from dereferencing a dangling
pointer.
Drivers of following devices were updated - ad5816, as364x, dw9718,
imx091, max77387, max77665-flash, ov5693, ov9772, sh532u, ssl3250a
and tps61050.
Change-Id: I2344e6fefabdeda962ea33bc10803881e07ab3f0
Signed-off-by: Shreshtha Sahu <ssahu@nvidia.com>
Reviewed-on: http://git-master/r/256818
GVS: Gerrit_Virtual_Submit
Reviewed-by: Kiran Adduri <kadduri@nvidia.com>
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>
Reviewed-by: Matthew Pedro <mapedro@nvidia.com>
Diffstat (limited to 'drivers/media/video/tegra/ad5816.c')
-rw-r--r-- | drivers/media/video/tegra/ad5816.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/drivers/media/video/tegra/ad5816.c b/drivers/media/video/tegra/ad5816.c index bddd923c6a1f..5a9bd902b5c9 100644 --- a/drivers/media/video/tegra/ad5816.c +++ b/drivers/media/video/tegra/ad5816.c @@ -124,6 +124,7 @@ struct ad5816_info { int pwr_dev; s32 pos; u16 dev_id; + char devname[16]; }; /** @@ -777,7 +778,6 @@ static int ad5816_probe( const struct i2c_device_id *id) { struct ad5816_info *info; - char dname[16]; int err; dev_dbg(&client->dev, "%s\n", __func__); @@ -835,20 +835,21 @@ static int ad5816_probe( ad5816_sdata_init(info); if (info->pdata->dev_name != 0) - strcpy(dname, info->pdata->dev_name); + strncpy(info->devname, info->pdata->dev_name, + sizeof(info->devname) - 1); else - strcpy(dname, "ad5816"); + strncpy(info->devname, "ad5816", sizeof(info->devname) - 1); if (info->pdata->num) - snprintf(dname, sizeof(dname), - "%s.%u", dname, info->pdata->num); + snprintf(info->devname, sizeof(info->devname), + "%s.%u", info->devname, info->pdata->num); - info->miscdev.name = dname; + info->miscdev.name = info->devname; info->miscdev.fops = &ad5816_fileops; info->miscdev.minor = MISC_DYNAMIC_MINOR; if (misc_register(&info->miscdev)) { dev_err(info->dev, "%s unable to register misc device %s\n", - __func__, dname); + __func__, info->devname); ad5816_del(info); return -ENODEV; } |