Subject: [PATCH 1/6] crypto/nx-842-pseries: nx842_OF_upd_status should return ENODEV if device is not 'okay'

From: Nishanth Aravamudan <[email-masked]>
Date: Thu, 2 Jul 2015 15:38:48 -0700

The current documention mentions explicitly that EINVAL should be
returned if the device is not available, but nx842_OF_upd_status()
always returns 0. However, nx842_probe() specifically checks for
non-ENODEV returns from nx842_of_upd() (which in turn calls
nx842_OF_upd_status()) and emits an extra error in that case. It seems
like the proper return code of a disabled device is ENODEV.

Signed-off-by: Nishanth Aravamudan <[email-masked]>

---
 drivers/crypto/nx/nx-842-pseries.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/nx/nx-842-pseries.c b/drivers/crypto/nx/nx-842-pseries.c
index 3040a6091bf2..819c23c546e3 100644
--- a/drivers/crypto/nx/nx-842-pseries.c
+++ b/drivers/crypto/nx/nx-842-pseries.c
@@ -556,7 +556,7 @@ static int nx842_OF_set_defaults(struct nx842_devdata *devdata)
  *
  * Returns:
  *  0 - Device is available
- *  -EINVAL - Device is not available
+ *  -ENODEV - Device is not available
  */
 static int nx842_OF_upd_status(struct nx842_devdata *devdata,
 					struct property *prop) {
@@ -569,6 +569,7 @@ static int nx842_OF_upd_status(struct nx842_devdata *devdata,
 		dev_info(devdata->dev, "%s: status '%s' is not 'okay'\n",
 				__func__, status);
 		devdata->status = UNAVAILABLE;
+		ret = -ENODEV;
 	}
 
 	return ret;
-- 
2.1.4