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authorAlan Hourihane <alanh@fairlite.demon.co.uk>2007-09-26 15:38:54 +0100
committerAlan Hourihane <alanh@fairlite.demon.co.uk>2007-09-26 15:38:54 +0100
commit6671ad1917698b6174a1af314b63b3800d75248c (patch)
tree9a9a333f364aa0f758fcbdb62ccebe22a788138c /linux-core
parent03c47f1420bf17a1e0f2b86be500656ae5a4c95b (diff)
don't copy back if an error was returned.
Diffstat (limited to 'linux-core')
-rw-r--r--linux-core/drm_drv.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/linux-core/drm_drv.c b/linux-core/drm_drv.c
index cedb6d50..8513a28f 100644
--- a/linux-core/drm_drv.c
+++ b/linux-core/drm_drv.c
@@ -645,7 +645,7 @@ long drm_unlocked_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
retcode = func(dev, kdata, file_priv);
}
- if (cmd & IOC_OUT) {
+ if ((retcode == 0) && cmd & IOC_OUT) {
if (copy_to_user((void __user *)arg, kdata,
_IOC_SIZE(cmd)) != 0)
retcode = -EACCES;