forked from Minki/linux
USB: adutux: 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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@ -439,7 +439,7 @@ static ssize_t adu_read(struct file *file, __user char *buffer, size_t count,
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/* drain secondary buffer */
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/* drain secondary buffer */
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int amount = bytes_to_read < data_in_secondary ? bytes_to_read : data_in_secondary;
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int amount = bytes_to_read < data_in_secondary ? bytes_to_read : data_in_secondary;
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i = copy_to_user(buffer, dev->read_buffer_secondary+dev->secondary_head, amount);
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i = copy_to_user(buffer, dev->read_buffer_secondary+dev->secondary_head, amount);
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if (i < 0) {
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if (i) {
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retval = -EFAULT;
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retval = -EFAULT;
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goto exit;
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goto exit;
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}
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}
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