summaryrefslogtreecommitdiff
path: root/drivers/ata/libata-core.c
diff options
context:
space:
mode:
authorTejun Heo <tj@kernel.org>2010-05-15 18:09:34 (GMT)
committerJeff Garzik <jgarzik@redhat.com>2010-06-02 17:50:10 (GMT)
commitd8d9129ea28e2177749627c82962feb26e8d11e9 (patch)
treef930703c8e3ba66cadcaf712ee7ce9b36a6d0823 /drivers/ata/libata-core.c
parent68939ce5fc17ee9c03ef6e543d4f82bd9f5583d4 (diff)
downloadlinux-d8d9129ea28e2177749627c82962feb26e8d11e9.tar.xz
libata: implement on-demand HPA unlocking
Implement ata_scsi_unlock_native_capacity() which will be called through SCSI layer when block layer notices that partitions on a device extend beyond the end of the device. It requests EH to unlock HPA, waits for completion and returns the current device capacity. This allows libata to unlock HPA on demand instead of having to decide whether to unlock upfront. Unlocking on demand is safer than unlocking by upfront because some BIOSes write private data to the area beyond HPA limit. This was suggested by Ben Hutchings. Signed-off-by: Tejun Heo <tj@kernel.org> Suggested-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Diffstat (limited to 'drivers/ata/libata-core.c')
-rw-r--r--drivers/ata/libata-core.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 1e5d0a3..ddf8e48 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -6668,6 +6668,7 @@ EXPORT_SYMBOL_GPL(ata_dummy_port_info);
EXPORT_SYMBOL_GPL(ata_link_next);
EXPORT_SYMBOL_GPL(ata_dev_next);
EXPORT_SYMBOL_GPL(ata_std_bios_param);
+EXPORT_SYMBOL_GPL(ata_scsi_unlock_native_capacity);
EXPORT_SYMBOL_GPL(ata_host_init);
EXPORT_SYMBOL_GPL(ata_host_alloc);
EXPORT_SYMBOL_GPL(ata_host_alloc_pinfo);