| Message ID | 20181010172300.317643-8-lkundrak@v3.sk (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | Add support for OLPC XO 1.75 Embedded Controller | expand |
On Wed, Oct 10, 2018 at 8:23 PM Lubomir Rintel <lkundrak@v3.sk> wrote: > > Just return ENODEV, so that whoever attempted to use the EC call can > defer their work. > > Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> > --- > drivers/platform/olpc/olpc-ec.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c > index 35a21c66cd0d..342f5bb7f7a8 100644 > --- a/drivers/platform/olpc/olpc-ec.c > +++ b/drivers/platform/olpc/olpc-ec.c > @@ -116,8 +116,11 @@ 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 -ENODEV; Why -ENODEV is preferred over -EPROBE_DEFER? > + > + if (WARN_ON(!ec_driver->ec_cmd)) > return -ENODEV; > > if (!ec) > -- > 2.19.0 >
On Wed 2018-10-10 19:22:52, Lubomir Rintel wrote: > Just return ENODEV, 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> > --- > drivers/platform/olpc/olpc-ec.c | 7 +++++-- > 1 file changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c > index 35a21c66cd0d..342f5bb7f7a8 100644 > --- a/drivers/platform/olpc/olpc-ec.c > +++ b/drivers/platform/olpc/olpc-ec.c > @@ -116,8 +116,11 @@ 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 -ENODEV; > + > + if (WARN_ON(!ec_driver->ec_cmd)) > return -ENODEV; > > if (!ec)
diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c index 35a21c66cd0d..342f5bb7f7a8 100644 --- a/drivers/platform/olpc/olpc-ec.c +++ b/drivers/platform/olpc/olpc-ec.c @@ -116,8 +116,11 @@ 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 -ENODEV; + + if (WARN_ON(!ec_driver->ec_cmd)) return -ENODEV; if (!ec)
Just return ENODEV, so that whoever attempted to use the EC call can defer their work. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> --- drivers/platform/olpc/olpc-ec.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)