Currently the ahci_st driver will hang the system on probe, as the
st_configure_oob function does some register writes before the IP
is clocked. This patch moves the function call to after
ahci_platform_enable_resources (which enables the IP clock), and
resolves the hang.
Addtionally st_ahci_configure_oob should be called in the st_ahci_resume
function, so we also rectify that ensuring it is also called after
the IP clock has been enabled.
Signed-off-by: Peter Griffin <peter.griffin@xxxxxxxxxx>
Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>
Acked-by: Maxime Coquelin <maxime.coquelin@xxxxxx>
---
drivers/ata/ahci_st.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/ata/ahci_st.c b/drivers/ata/ahci_st.c
index bc971af..ea0ff00 100644
--- a/drivers/ata/ahci_st.c
+++ b/drivers/ata/ahci_st.c
@@ -68,8 +68,6 @@ static int st_ahci_deassert_resets(struct device *dev)
}
}
- st_ahci_configure_oob(drv_data->hpriv->mmio);
-
if (drv_data->sw_rst) {
err = reset_control_deassert(drv_data->sw_rst);
if (err) {
@@ -172,6 +170,8 @@ static int st_ahci_probe(struct platform_device *pdev)
if (err)
return err;
+ st_ahci_configure_oob(drv_data->hpriv->mmio);
+
err = ahci_platform_init_host(pdev, hpriv, &st_ahci_port_info,
&ahci_platform_sht);
if (err) {
@@ -222,6 +222,8 @@ static int st_ahci_resume(struct device *dev)
return err;
}
+ st_ahci_configure_oob(drv_data->hpriv->mmio);
+
return ahci_platform_resume_host(dev);
}
#endif
--
1.9.1
--
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