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authorLinus Torvalds <torvalds@linux-foundation.org>2010-06-03 15:48:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-06-03 15:48:15 -0700
commitad8456361fa19068cf49b50a4f98e41b73c08e76 (patch)
tree281c96054fa2a8ca42ac47a4edfa6961cc463f29 /drivers/scsi
parent39d112100e561686ab1e2b19c57984163ad6c1fa (diff)
parentd8d9129ea28e2177749627c82962feb26e8d11e9 (diff)
Merge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev: libata: implement on-demand HPA unlocking libata: use the enlarged capacity after late HPA unlock SCSI: implement sd_unlock_native_capacity() libata-sff: trivial corrections to Kconfig help text sata_nv: don't diddle with nIEN on mcp55 sata_via: magic vt6421 fix for transmission problems w/ WD drives
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/sd.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index 829cc37abc41..8802e48bc063 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -97,6 +97,7 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC);
#endif
static int sd_revalidate_disk(struct gendisk *);
+static void sd_unlock_native_capacity(struct gendisk *disk);
static int sd_probe(struct device *);
static int sd_remove(struct device *);
static void sd_shutdown(struct device *);
@@ -1101,6 +1102,7 @@ static const struct block_device_operations sd_fops = {
#endif
.media_changed = sd_media_changed,
.revalidate_disk = sd_revalidate_disk,
+ .unlock_native_capacity = sd_unlock_native_capacity,
};
static unsigned int sd_completed_bytes(struct scsi_cmnd *scmd)
@@ -2121,6 +2123,26 @@ static int sd_revalidate_disk(struct gendisk *disk)
}
/**
+ * sd_unlock_native_capacity - unlock native capacity
+ * @disk: struct gendisk to set capacity for
+ *
+ * Block layer calls this function if it detects that partitions
+ * on @disk reach beyond the end of the device. If the SCSI host
+ * implements ->unlock_native_capacity() method, it's invoked to
+ * give it a chance to adjust the device capacity.
+ *
+ * CONTEXT:
+ * Defined by block layer. Might sleep.
+ */
+static void sd_unlock_native_capacity(struct gendisk *disk)
+{
+ struct scsi_device *sdev = scsi_disk(disk)->device;
+
+ if (sdev->host->hostt->unlock_native_capacity)
+ sdev->host->hostt->unlock_native_capacity(sdev);
+}
+
+/**
* sd_format_disk_name - format disk name
* @prefix: name prefix - ie. "sd" for SCSI disks
* @index: index of the disk to format name for