ide: lba_capacity_is_ok() -> ata_id_is_lba_capacity_ok()

Rename lba_capacity_is_ok() to ata_id_is_lba_capacity_ok()
and move it to <linux/ata.h> (remove needless parens while at it).

Cc: Jeff Garzik <jgarzik@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/ide-disk.c b/drivers/ide/ide-disk.c
index 587d5aac7d5d318f1194c160afcd816f3890fc72..43025c9d8355c857a408acc9beb302c2315c9511 100644 (file)
--- a/drivers/ide/ide-disk.c
+++ b/drivers/ide/ide-disk.c
@@ -88,56 +88,6 @@ static void ide_disk_put(struct ide_disk_obj *idkp)
        mutex_unlock(&idedisk_ref_mutex);
 }
 
-/*
- * lba_capacity_is_ok() performs a sanity check on the claimed "lba_capacity"
- * value for this drive (from its reported identification information).
- *
- * Returns:    1 if lba_capacity looks sensible
- *             0 otherwise
- *
- * It is called only once for each drive.
- */
-static int lba_capacity_is_ok(u16 *id)
-{
-       unsigned long lba_sects, chs_sects, head, tail;
-
-       /* No non-LBA info .. so valid! */
-       if (id[ATA_ID_CYLS] == 0)
-               return 1;
-
-       lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
-
-       /*
-        * The ATA spec tells large drives to return
-        * C/H/S = 16383/16/63 independent of their size.
-        * Some drives can be jumpered to use 15 heads instead of 16.
-        * Some drives can be jumpered to use 4092 cyls instead of 16383.
-        */
-       if ((id[ATA_ID_CYLS] == 16383 ||
-            (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
-           id[ATA_ID_SECTORS] == 63 &&
-           (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
-           (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
-               return 1;
-
-       chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
-
-       /* perform a rough sanity check on lba_sects:  within 10% is OK */
-       if ((lba_sects - chs_sects) < chs_sects/10)
-               return 1;
-
-       /* some drives have the word order reversed */
-       head = ((lba_sects >> 16) & 0xffff);
-       tail = (lba_sects & 0xffff);
-       lba_sects = (head | (tail << 16));
-       if ((lba_sects - chs_sects) < chs_sects/10) {
-               *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
-               return 1;       /* lba_capacity is (now) good */
-       }
-
-       return 0;       /* lba_capacity value may be bad */
-}
-
 static const u8 ide_rw_cmds[] = {
        ATA_CMD_READ_MULTI,
        ATA_CMD_WRITE_MULTI,
@@ -446,7 +396,7 @@ static void init_idedisk_capacity(ide_drive_t *drive)
                drive->capacity64 = ata_id_u64(id, ATA_ID_LBA_CAPACITY_2);
                if (hpa)
                        idedisk_check_hpa(drive);
-       } else if (ata_id_has_lba(id) && lba_capacity_is_ok(id)) {
+       } else if (ata_id_has_lba(id) && ata_id_is_lba_capacity_ok(id)) {
                /* drive speaks 28-bit LBA */
                drive->select.b.lba = 1;
                drive->capacity64 = ata_id_u32(id, ATA_ID_LBA_CAPACITY);

diff --git a/include/linux/ata.h b/include/linux/ata.h
index 4c3f50070033dac21da635c819b1de8bd96100b4..a53318b8cbd0ea9a4b7a69f3376cb11036a5ff32 100644 (file)
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -782,6 +782,56 @@ static inline int atapi_id_dmadir(const u16 *dev_id)
        return ata_id_major_version(dev_id) >= 7 && (dev_id[62] & 0x8000);
 }
 
+/*
+ * ata_id_is_lba_capacity_ok() performs a sanity check on
+ * the claimed LBA capacity value for the device.
+ *
+ * Returns 1 if LBA capacity looks sensible, 0 otherwise.
+ *
+ * It is called only once for each device.
+ */
+static inline int ata_id_is_lba_capacity_ok(u16 *id)
+{
+       unsigned long lba_sects, chs_sects, head, tail;
+
+       /* No non-LBA info .. so valid! */
+       if (id[ATA_ID_CYLS] == 0)
+               return 1;
+
+       lba_sects = ata_id_u32(id, ATA_ID_LBA_CAPACITY);
+
+       /*
+        * The ATA spec tells large drives to return
+        * C/H/S = 16383/16/63 independent of their size.
+        * Some drives can be jumpered to use 15 heads instead of 16.
+        * Some drives can be jumpered to use 4092 cyls instead of 16383.
+        */
+       if ((id[ATA_ID_CYLS] == 16383 ||
+            (id[ATA_ID_CYLS] == 4092 && id[ATA_ID_CUR_CYLS] == 16383)) &&
+           id[ATA_ID_SECTORS] == 63 &&
+           (id[ATA_ID_HEADS] == 15 || id[ATA_ID_HEADS] == 16) &&
+           (lba_sects >= 16383 * 63 * id[ATA_ID_HEADS]))
+               return 1;
+
+       chs_sects = id[ATA_ID_CYLS] * id[ATA_ID_HEADS] * id[ATA_ID_SECTORS];
+
+       /* perform a rough sanity check on lba_sects: within 10% is OK */
+       if (lba_sects - chs_sects < chs_sects/10)
+               return 1;
+
+       /* some drives have the word order reversed */
+       head = (lba_sects >> 16) & 0xffff;
+       tail = lba_sects & 0xffff;
+       lba_sects = head | (tail << 16);
+
+       if (lba_sects - chs_sects < chs_sects/10) {
+               *(__le32 *)&id[ATA_ID_LBA_CAPACITY] = __cpu_to_le32(lba_sects);
+               return 1;       /* LBA capacity is (now) good */
+       }
+
+       return 0;       /* LBA capacity value may be bad */
+}
+
 static inline void ata_id_to_hd_driveid(u16 *id)
 {
 #ifdef __BIG_ENDIAN