macio: fix overflow in lba to offset conversion for ATAPI devices
As the IDEState lba field is an int32_t, make sure we cast to int64_t before shifting to calculate the offset. Otherwise we end up with an overflow when trying to access sectors beyond 2GB as can occur when using DVD images. [Maintainer edit: fixed extraneous parentheses. --js] Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: John Snow <jsnow@redhat.com> Message-id: 1451928613-29476-1-git-send-email-mark.cave-ayland@ilande.co.uk Signed-off-by: John Snow <jsnow@redhat.com>
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@ -280,7 +280,7 @@ static void pmac_ide_atapi_transfer_cb(void *opaque, int ret)
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/* Calculate current offset */
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offset = (int64_t)(s->lba << 11) + s->io_buffer_index;
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offset = ((int64_t)s->lba << 11) + s->io_buffer_index;
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pmac_dma_read(s->blk, offset, io->len, pmac_ide_atapi_transfer_cb, io);
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return;
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