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Subject[PATCH v2 1/2] ata: ahci_brcm: Perform reset after obtaining resources
Date
Resources such as clocks, PHYs, regulators are likely to get a probe
deferral return code, which could lead to the AHCI controller being
reset a few times until it gets successfully probed. Since this is
typically the most time consuming operation, move it after the resources
have been acquired.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
---
drivers/ata/ahci_brcm.c | 14 ++++++--------
1 file changed, 6 insertions(+), 8 deletions(-)

diff --git a/drivers/ata/ahci_brcm.c b/drivers/ata/ahci_brcm.c
index 13ceca687104..70e3e386d52e 100644
--- a/drivers/ata/ahci_brcm.c
+++ b/drivers/ata/ahci_brcm.c
@@ -453,15 +453,9 @@ static int brcm_ahci_probe(struct platform_device *pdev)
else
reset_name = "ahci";

- priv->rcdev = devm_reset_control_get(&pdev->dev, reset_name);
- if (!IS_ERR_OR_NULL(priv->rcdev))
- reset_control_deassert(priv->rcdev);
-
hpriv = ahci_platform_get_resources(pdev, 0);
- if (IS_ERR(hpriv)) {
- ret = PTR_ERR(hpriv);
- goto out_reset;
- }
+ if (IS_ERR(hpriv))
+ return PTR_ERR(hpriv);

hpriv->plat_data = priv;
hpriv->flags = AHCI_HFLAG_WAKE_BEFORE_STOP | AHCI_HFLAG_NO_WRITE_TO_RO;
@@ -478,6 +472,10 @@ static int brcm_ahci_probe(struct platform_device *pdev)
break;
}

+ priv->rcdev = devm_reset_control_get(&pdev->dev, reset_name);
+ if (!IS_ERR_OR_NULL(priv->rcdev))
+ reset_control_deassert(priv->rcdev);
+
ret = ahci_platform_enable_clks(hpriv);
if (ret)
goto out_reset;
--
2.17.1
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