diff mbox series

[v5,04/10] Platform: OLPC: Avoid a warning if the EC didn't register yet

Message ID 20190110175845.1203986-5-lkundrak@v3.sk (mailing list archive)
State New, archived
Headers show
Series Add support for OLPC XO 1.75 Embedded Controller | expand

Commit Message

Lubomir Rintel Jan. 10, 2019, 5:58 p.m. UTC 
Just return EPROBE_DEFER, so that whoever attempted to use the EC call can
defer their work.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Pavel Machek <pavel@ucw.cz>

---
Changes since v2:
- Adjust the commit message for the s/ENODEV/EPROBE_DEFER/ change

Changes since v1:
- EPROBE_DEFER instead of ENODEV

 drivers/platform/olpc/olpc-ec.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c
index 2a647455a368..a91f78245f5e 100644
--- a/drivers/platform/olpc/olpc-ec.c
+++ b/drivers/platform/olpc/olpc-ec.c
@@ -125,8 +125,11 @@  int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen)
 	struct olpc_ec_priv *ec = ec_priv;
 	struct ec_cmd_desc desc;
 
-	/* Ensure a driver and ec hook have been registered */
-	if (WARN_ON(!ec_driver || !ec_driver->ec_cmd))
+	/* Driver not yet registered. */
+	if (!ec_driver)
+		return -EPROBE_DEFER;
+
+	if (WARN_ON(!ec_driver->ec_cmd))
 		return -ENODEV;
 
 	if (!ec)