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authorMika Westerberg <mika.westerberg@linux.intel.com>2016-02-18 11:54:14 +0300
committerTejun Heo <tj@kernel.org>2016-02-19 18:52:46 +0300
commit8ea909cb35bc2c3226610f8631c73e355020a26e (patch)
tree5312d48a1871e8a09bbf3b954421e5e7fc929877 /drivers/ata/ahci.h
parent5c6fab9d558470b4e53c6d113f7dbcb31049ffc5 (diff)
downloadlinux-8ea909cb35bc2c3226610f8631c73e355020a26e.tar.xz
ahci: Cache host controller version
This allows sysfs nodes to read the cached value directly instead of powering up possibly runtime suspended controller. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ata/ahci.h')
-rw-r--r--drivers/ata/ahci.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 167ba7e3b92e..70b06bcfb7e3 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -335,6 +335,7 @@ struct ahci_host_priv {
void __iomem * mmio; /* bus-independent mem map */
u32 cap; /* cap to use */
u32 cap2; /* cap2 to use */
+ u32 version; /* cached version */
u32 port_map; /* port map to use */
u32 saved_cap; /* saved initial cap */
u32 saved_cap2; /* saved initial cap2 */