[PATCH RFC 24/35] ata: libata-eh: drop nth_page() usage within SG entry

[David Hildenbrand]

It's no longer required to use nth_page() when iterating pages within a
single SG entry, so let's drop the nth_page() usage.

Cc: Damien Le Moal <dlem...@kernel.org>
Cc: Niklas Cassel <cas...@kernel.org>
Signed-off-by: David Hildenbrand <da...@redhat.com>
---
 drivers/ata/libata-sff.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 7fc407255eb46..9f5d0f9f6d686 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -614,7 +614,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
        offset = qc->cursg->offset + qc->cursg_ofs;
 
        /* get the current page and offset */
-       page = nth_page(page, (offset >> PAGE_SHIFT));
+       page += offset / PAGE_SHIFT;
        offset %= PAGE_SIZE;
 
        /* don't overrun current sg */
@@ -631,7 +631,7 @@ static void ata_pio_sector(struct ata_queued_cmd *qc)
                unsigned int split_len = PAGE_SIZE - offset;
 
                ata_pio_xfer(qc, page, offset, split_len);
-               ata_pio_xfer(qc, nth_page(page, 1), 0, count - split_len);
+               ata_pio_xfer(qc, page + 1, 0, count - split_len);
        } else {
                ata_pio_xfer(qc, page, offset, count);
        }
@@ -751,7 +751,7 @@ static int __atapi_pio_bytes(struct ata_queued_cmd *qc, 
unsigned int bytes)
        offset = sg->offset + qc->cursg_ofs;
 
        /* get the current page and offset */
-       page = nth_page(page, (offset >> PAGE_SHIFT));
+       page += offset / PAGE_SIZE;
        offset %= PAGE_SIZE;
 
        /* don't overrun current sg */
-- 
2.50.1