On Fri, Sep 17, 2021 at 07:05:28PM +0800, Cai Huoqing wrote:
> Hi
> Thanks for your feedback.
> On 17 9月 21 10:17:29, Daniel Thompson wrote:
> > On Fri, Sep 17, 2021 at 11:13:06AM +0800, Cai Huoqing wrote:
> > > When possible use dev_err_probe help to properly deal with the
> > > PROBE_DEFER error, the benefit is that DEFER issue will be logged
> > > in the devices_deferred debugfs file.
> > > Using dev_err_probe() can reduce code size, and the error value
> > > gets printed.
> > >
> > > Signed-off-by: Cai Huoqing <caihuoqing@xxxxxxxxx>
> >
> > Change seems OK but does this really need to be done one file at a time?
> > I'd prefer to see all of backlight handled in one go (given the scope of
> > this change if applied across the kernel it needs automatic tooling
> > anyway).
> Only two related patches for backlight.
Can you explain how you reach this conclusion?
I only checked two drivers (the first two when you list the drivers
an alphabetic order) but both contain code that appears to match the
pattern you are targeting.
> I try to keep one patch for a subdriver, sometimes different
> subdriver owner need to mark reviwed independently.
For mechanical patches of this nature I don't think there is any need
for acks from individual backlight driver authors. Reviews are 100%
welcome but we would not hold a single patch back until all authors
have reviewed it.
Daniel.
> > > ---
> > > drivers/video/backlight/bd6107.c | 16 ++++++----------
> > > 1 file changed, 6 insertions(+), 10 deletions(-)
> > >
> > > diff --git a/drivers/video/backlight/bd6107.c b/drivers/video/backlight/bd6107.c
> > > index 515184fbe33a..e21b793302a2 100644
> > > --- a/drivers/video/backlight/bd6107.c
> > > +++ b/drivers/video/backlight/bd6107.c
> > > @@ -120,7 +120,6 @@ static int bd6107_probe(struct i2c_client *client,
> > > struct backlight_device *backlight;
> > > struct backlight_properties props;
> > > struct bd6107 *bd;
> > > - int ret;
> > >
> > > if (pdata == NULL) {
> > > dev_err(&client->dev, "No platform data\n");
> > > @@ -148,11 +147,9 @@ static int bd6107_probe(struct i2c_client *client,
> > > * the reset.
> > > */
> > > bd->reset = devm_gpiod_get(&client->dev, "reset", GPIOD_OUT_HIGH);
> > > - if (IS_ERR(bd->reset)) {
> > > - dev_err(&client->dev, "unable to request reset GPIO\n");
> > > - ret = PTR_ERR(bd->reset);
> > > - return ret;
> > > - }
> > > + if (IS_ERR(bd->reset))
> > > + return dev_err_probe(&client->dev, PTR_ERR(bd->reset),
> > > + "unable to request reset GPIO\n");
> > >
> > > memset(&props, 0, sizeof(props));
> > > props.type = BACKLIGHT_RAW;
> > > @@ -164,10 +161,9 @@ static int bd6107_probe(struct i2c_client *client,
> > > dev_name(&client->dev),
> > > &bd->client->dev, bd,
> > > &bd6107_backlight_ops, &props);
> > > - if (IS_ERR(backlight)) {
> > > - dev_err(&client->dev, "failed to register backlight\n");
> > > - return PTR_ERR(backlight);
> > > - }
> > > + if (IS_ERR(backlight))
> > > + return dev_err_probe(&client->dev, PTR_ERR(backlight),
> > > + "failed to register backlight\n");
> > >
> > > backlight_update_status(backlight);
> > > i2c_set_clientdata(client, backlight);
> > > --
> > > 2.25.1
> > >
