From: Lubomir Rintel Date: Mon, 13 May 2019 07:56:35 +0000 (+0200) Subject: Platform: OLPC: Avoid a warning if the EC didn't register yet X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=560331eaee6c552adc1b8201063ccbfe5009bc12;p=linux.git Platform: OLPC: Avoid a warning if the EC didn't register yet Just return EPROBE_DEFER, so that whoever attempted to use the EC call can defer their work. Signed-off-by: Lubomir Rintel Acked-by: Pavel Machek Signed-off-by: Andy Shevchenko --- diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index 2a647455a3683..a91f78245f5e2 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)