ide-disk: use ide_get_lba_addr()

* Export ide_get_lba_addr().

* Convert idedisk_{read_native,set}_max_address() to use ide_get_lba_addr().

* Remove incorrect comment from idedisk_read_native_max_address()
  (noticed by Sergei).

There should be no functionality changes caused by this patch.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

3 files changed, 7 insertions, 23 deletions

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 3d7127ba67a0..d8fdd865dea9 100644
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -326,18 +326,9 @@ static u64 idedisk_read_native_max_address(ide_drive_t *drive, int lba48)
         ide_no_data_taskfile(drive, &args);
 
         /* if OK, compute maximum address value */
-        if ((tf->status & 0x01) == 0) {
-                u32 high, low;
+        if ((tf->status & 0x01) == 0)
+                addr = ide_get_lba_addr(tf, lba48) + 1;
 
-                if (lba48)
-                        high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) |
-                                tf->hob_lbal;
-                else
-                        high = tf->device & 0xf;
-                low  = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
-                addr = ((__u64)high << 24) | low;
-                addr++; /* since the return value is (maxlba - 1), we add 1 */
-        }
         return addr;
 }
 
@@ -373,18 +364,9 @@ static u64 idedisk_set_max_address(ide_drive_t *drive, u64 addr_req, int lba48)
         /* submit command request */
         ide_no_data_taskfile(drive, &args);
         /* if OK, compute maximum address value */
-        if ((tf->status & 0x01) == 0) {
-                u32 high, low;
+        if ((tf->status & 0x01) == 0)
+                addr_set = ide_get_lba_addr(tf, lba48) + 1;
 
-                if (lba48)
-                        high = (tf->hob_lbah << 16) | (tf->hob_lbam << 8) |
-                                tf->hob_lbal;
-                else
-                        high = tf->device & 0xf;
-                low  = (tf->lbah << 16) | (tf->lbam << 8) | tf->lbal;
-                addr_set = ((__u64)high << 24) | low;
-                addr_set++;
-        }
         return addr_set;
 }
 
diff --git a/drivers/ide/ide-lib.c b/drivers/ide/ide-lib.c
index d7503c489e99..6b2e810cb9e0 100644
--- a/drivers/ide/ide-lib.c
+++ b/drivers/ide/ide-lib.c
@@ -479,7 +479,7 @@ static void ide_dump_opcode(ide_drive_t *drive)
                 printk("0x%02x\n", opcode);
 }
 
-static u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48)
+u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48)
 {
         u32 high, low;
 
@@ -492,6 +492,7 @@ static u64 ide_get_lba_addr(struct ide_taskfile *tf, int lba48)
 
         return ((u64)high << 24) | low;
 }
+EXPORT_SYMBOL_GPL(ide_get_lba_addr);
 
 static void ide_dump_sector(ide_drive_t *drive)
 {
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 67f98c096c03..ecaa96e613dc 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1238,6 +1238,7 @@ static inline int ide_dev_is_sata(struct hd_driveid *id)
         return 0;
 }
 
+u64 ide_get_lba_addr(struct ide_taskfile *, int);
 u8 ide_dump_status(ide_drive_t *, const char *, u8);
 
 typedef struct ide_pio_timings_s {