[PATCH] libata-hp-prep: implement ap->hw_sata_spd_limit

Add ap->hw_sata_spd_limit and initialize it once during the boot
initialization (or driver load initialization).  ap->sata_spd_limit is
reset to ap->hw_sata_spd_limit on hotplug.  This prevents spd limits
introduced by earlier devices from affecting new devices.

Signed-off-by: Tejun Heo <htejun@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/include/linux/libata.h b/include/linux/libata.h
index aa14eda0656c..10dc235ad8bc 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -489,6 +489,7 @@ struct ata_port {
         unsigned int            mwdma_mask;
         unsigned int            udma_mask;
         unsigned int            cbl;    /* cable type; ATA_CBL_xxx */
+        unsigned int            hw_sata_spd_limit;
         unsigned int            sata_spd_limit; /* SATA PHY speed limit */
 
         /* record runtime error info, protected by host_set lock */