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[RESEND,v6,14/23] ata: libahci: Don't read AHCI version twice in the save-config method

Message ID 20220728111905.12427-15-Sergey.Semin@baikalelectronics.ru
State New
Headers show
Series ata: ahci: Add DWC/Baikal-T1 AHCI SATA support | expand

Commit Message

Serge Semin July 28, 2022, 11:18 a.m. UTC 
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>
---
 drivers/ata/libahci.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

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)