From 6d4d4554863b7897f2bc9cd9085f54c819152825 Mon Sep 17 00:00:00 2001 From: Kulikov Vasiliy Date: Sat, 31 Jul 2010 21:39:46 +0400 Subject: [PATCH] USB: iowarrior: fix misuse of return value of copy_to_user() copy_to_user() returns number of not copied bytes, not error code. Signed-off-by: Kulikov Vasiliy Signed-off-by: Greg Kroah-Hartman --- drivers/usb/misc/iowarrior.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 2de49c8887c5..bc88c79875a1 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -542,7 +542,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd, retval = io_res; else { io_res = copy_to_user(user_buffer, buffer, dev->report_size); - if (io_res < 0) + if (io_res) retval = -EFAULT; } break; @@ -574,7 +574,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd, } io_res = copy_to_user((struct iowarrior_info __user *)arg, &info, sizeof(struct iowarrior_info)); - if (io_res < 0) + if (io_res) retval = -EFAULT; break; } -- 2.30.2