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authorSerge Semin <Sergey.Semin@baikalelectronics.ru>2022-09-09 22:36:12 +0300
committerDamien Le Moal <damien.lemoal@opensource.wdc.com>2022-09-16 19:39:50 +0300
commitfad64dc06579ac1cc05d5ab73bdaa62ee6435ed8 (patch)
tree3217042fd4aec43b9e6385727d1ce443d97fd23b /drivers/ata
parent88589772e80cec5dc2058d7d84a1a97a31674195 (diff)
downloadlinux-fad64dc06579ac1cc05d5ab73bdaa62ee6435ed8.tar.xz
ata: libahci: Don't read AHCI version twice in the save-config method
There is no point in reading the AHCI version all over in the tail of the ahci_save_initial_config() method. That register is RO and doesn't change its value even after reset. So just reuse the data, which has already been read from there earlier in the head of the function. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Diffstat (limited to 'drivers/ata')
-rw-r--r--drivers/ata/libahci.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/ata/libahci.c b/drivers/ata/libahci.c
index 000a7072614f..1ffaa5f5f21a 100644
--- a/drivers/ata/libahci.c
+++ b/drivers/ata/libahci.c
@@ -564,7 +564,7 @@ void ahci_save_initial_config(struct device *dev, struct ahci_host_priv *hpriv)
/* record values to use during operation */
hpriv->cap = cap;
hpriv->cap2 = cap2;
- hpriv->version = readl(mmio + HOST_VERSION);
+ hpriv->version = vers;
hpriv->port_map = port_map;
if (!hpriv->start_engine)