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 <segooon@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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14184f9b80
Коммит
6d4d455486
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@ -542,7 +542,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd,
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retval = io_res;
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else {
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io_res = copy_to_user(user_buffer, buffer, dev->report_size);
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if (io_res < 0)
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if (io_res)
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retval = -EFAULT;
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}
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break;
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@ -574,7 +574,7 @@ static long iowarrior_ioctl(struct file *file, unsigned int cmd,
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}
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io_res = copy_to_user((struct iowarrior_info __user *)arg, &info,
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sizeof(struct iowarrior_info));
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if (io_res < 0)
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if (io_res)
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retval = -EFAULT;
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break;
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}
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