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don't copy back if an error was returned.

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This commit is contained in:
Alan Hourihane 2007-09-26 15:38:54 +01:00
parent 972ec4fa25
commit b2c4c7ae5e
1 changed files with 1 additions and 1 deletions
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2
linux-core/drm_drv.c
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@ -660,7 +660,7 @@ 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;