From: Jesper Juhl drivers/isdn/i4l/isdn_ppp.c:785: warning: ignoring return value of `copy_to_user', declared with attribute warn_unused_result Signed-off-by: Jesper Juhl Signed-off-by: Karsten Keil Signed-off-by: Andrew Morton --- drivers/isdn/i4l/isdn_ppp.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletion(-) diff -puN drivers/isdn/i4l/isdn_ppp.c~isdn-fix-copy_to_user-unused-result-warning-in-isdn_ppp drivers/isdn/i4l/isdn_ppp.c --- devel/drivers/isdn/i4l/isdn_ppp.c~isdn-fix-copy_to_user-unused-result-warning-in-isdn_ppp 2006-02-21 18:19:38.000000000 -0800 +++ devel-akpm/drivers/isdn/i4l/isdn_ppp.c 2006-02-21 18:19:38.000000000 -0800 @@ -782,7 +782,8 @@ isdn_ppp_read(int min, struct file *file is->first = b; spin_unlock_irqrestore(&is->buflock, flags); - copy_to_user(buf, save_buf, count); + if (copy_to_user(buf, save_buf, count)) + count = -EFAULT; kfree(save_buf); return count; _