ata: ahci_platform: fix ahci_platform_data->suspend method handling

Looking at ST SPEAr1340 AHCI code (the only user of the deprecated
pdata->suspend and pdata->resume) it is obvious the we should return
after calling pdata->suspend() only if the function have returned
non-zero return value.  The code has been broken since commit 1e70c2
("ata/ahci_platform: Add clock framework support").  Fix it.

Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 9 insertions, 2 deletions

diff --git a/drivers/ata/ahci_platform.c b/drivers/ata/ahci_platform.c
index 70fbf664a73c..7bd6adf54b3e 100644
--- a/drivers/ata/ahci_platform.c
+++ b/drivers/ata/ahci_platform.c
@@ -521,12 +521,19 @@ int ahci_platform_suspend(struct device *dev)
         if (rc)
                 return rc;
 
-        if (pdata && pdata->suspend)
-                return pdata->suspend(dev);
+        if (pdata && pdata->suspend) {
+                rc = pdata->suspend(dev);
+                if (rc)
+                        goto resume_host;
+        }
 
         ahci_platform_disable_resources(hpriv);
 
         return 0;
+
+resume_host:
+        ahci_platform_resume_host(dev);
+        return rc;
 }
 EXPORT_SYMBOL_GPL(ahci_platform_suspend);