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Date: Tue, 4 Apr 2017 11:54:41 +0200 From: Hans de Goede <hdegoede@...hat.com> To: Dmitry Torokhov <dmitry.torokhov@...il.com> Cc: Darren Hart <dvhart@...radead.org>, Andy Shevchenko <andy@...radead.org>, platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/2] platform/x86: silead_dmi - abort early if DMI does not match Hi, On 04-04-17 05:25, Dmitry Torokhov wrote: > There is no point in registering I2C bus notifier if DMI data does not > match. > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com> Good idea, patch looks good to me: Reviewed-by: Hans de Goede <hdegoede@...hat.com> Regards, Hans > --- > drivers/platform/x86/silead_dmi.c | 20 +++++++++++--------- > 1 file changed, 11 insertions(+), 9 deletions(-) > > diff --git a/drivers/platform/x86/silead_dmi.c b/drivers/platform/x86/silead_dmi.c > index 7f1049951d1c..0eeb49e51c43 100644 > --- a/drivers/platform/x86/silead_dmi.c > +++ b/drivers/platform/x86/silead_dmi.c > @@ -75,21 +75,16 @@ static const struct dmi_system_id silead_ts_dmi_table[] = { > { }, > }; > > +static const struct silead_ts_dmi_data *silead_ts_data; > + > static void silead_ts_dmi_add_props(struct i2c_client *client) > { > - const struct dmi_system_id *dmi_id; > - const struct silead_ts_dmi_data *ts_data; > int error; > > - dmi_id = dmi_first_match(silead_ts_dmi_table); > - if (!dmi_id) > - return; > - > - ts_data = dmi_id->driver_data; > if (has_acpi_companion(&client->dev) && > - !strncmp(ts_data->acpi_name, client->name, I2C_NAME_SIZE)) { > + !strncmp(silead_ts_data->acpi_name, client->name, I2C_NAME_SIZE)) { > error = device_add_properties(&client->dev, > - ts_data->properties); > + silead_ts_data->properties); > if (error) > dev_err(&client->dev, > "failed to add properties: %d\n", error); > @@ -122,8 +117,15 @@ static struct notifier_block silead_ts_dmi_notifier = { > > static int __init silead_ts_dmi_init(void) > { > + const struct dmi_system_id *dmi_id; > int error; > > + dmi_id = dmi_first_match(silead_ts_dmi_table); > + if (!dmi_id) > + return 0; /* Not an error */ > + > + silead_ts_data = dmi_id->driver_data; > + > error = bus_register_notifier(&i2c_bus_type, &silead_ts_dmi_notifier); > if (error) > pr_err("%s: failed to register i2c bus notifier: %d\n", >
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