[PATCH] libata-core.c: fix parameter bug on kunmap_atomic() calls

Fix incorrect pointer usage on two calls to kunmap_atomic().
This seems to happen a lot, because kunmap() wants the struct page *,
whereas kunmap_atomic() instead wants the mapped virtual address.

Signed-off-by: Mark Lord <liml@rtr.ca>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index 665ae79..d0a0fdb 100644 (file)
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -2443,7 +2443,7 @@ static void ata_sg_clean(struct ata_queued_cmd *qc)
                        struct scatterlist *psg = &qc->pad_sgent;
                        void *addr = kmap_atomic(psg->page, KM_IRQ0);
                        memcpy(addr + psg->offset, pad_buf, qc->pad_len);
-                       kunmap_atomic(psg->page, KM_IRQ0);
+                       kunmap_atomic(addr, KM_IRQ0);
                }
        } else {
                if (sg_dma_len(&sg[0]) > 0)
@@ -2717,7 +2717,7 @@ static int ata_sg_setup(struct ata_queued_cmd *qc)
                if (qc->tf.flags & ATA_TFLAG_WRITE) {
                        void *addr = kmap_atomic(psg->page, KM_IRQ0);
                        memcpy(pad_buf, addr + psg->offset, qc->pad_len);
-                       kunmap_atomic(psg->page, KM_IRQ0);
+                       kunmap_atomic(addr, KM_IRQ0);
                }
 
                sg_dma_address(psg) = ap->pad_dma + (qc->tag * ATA_DMA_PAD_SZ);