> -----Original Message----- > From: Guenter Roeck [mailto:[email protected]] > Sent: Thursday, July 21, 2016 4:42 PM > To: Vadim Pasternak <[email protected]> > Cc: [email protected]; [email protected]; linux- > [email protected]; [email protected] > Subject: Re: [patch] Disable PMBus status check for DPS400 PSU controller >
Hi Guenter, Thank you very much for your reply. > Hi Vadim, > > On 07/21/2016 07:55 AM, Vadim Pasternak wrote: > > pmbus/dps400: disable PMBus status check through platform data > > structure to provide support for PSU DPS-460, DPS-800 from Delta > > Electronics, INC and for > > SGD009 from Acbel Polytech, INC. > > These devices do not support the STATUS_CML register, and reports > > communication error in response to this command. > > For this reason for these controllers, the status register check is > > disabled. > > > > The subject should be "hwmon: (pmbus) Add explicit support for DPS-460, DPS- > 800, and SGD009", followed by something like > > "Provide support for PSU DPS-460, DPS-800 from Delta Electronics, INC and for > SGD009 from Acbel Polytech, INC. > These devices do not support the STATUS_CML register and report a > communication error in response to this command. For this reason, the status > register check is disabled for these controllers." > > > Signed-off-by: Vadim Pasternak <[email protected]> > > > Unnecessary blank line > > > Reviewed-by: Jiri Pirko <[email protected]> > > --- > > drivers/hwmon/pmbus/pmbus.c | 16 ++++++++++++++++ > > drivers/hwmon/pmbus/pmbus_core.c | 3 +++ > > 2 files changed, 19 insertions(+) > > > > diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c > > index 0a74991..44c736a 100644 > > --- a/drivers/hwmon/pmbus/pmbus.c > > +++ b/drivers/hwmon/pmbus/pmbus.c > > @@ -25,6 +25,7 @@ > > #include <linux/slab.h> > > #include <linux/mutex.h> > > #include <linux/i2c.h> > > +#include <linux/i2c/pmbus.h> > > #include "pmbus.h" > > > > /* > > @@ -167,14 +168,26 @@ static int pmbus_probe(struct i2c_client *client, > > const struct i2c_device_id *id) > > { > > struct pmbus_driver_info *info; > > + struct pmbus_platform_data *pdata = NULL; > > + struct device *dev = &client->dev; > > > > info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info), > > GFP_KERNEL); > > if (!info) > > return -ENOMEM; > > + if (!strcmp(id->name, "dps460") || !strcmp(id->name, "dps460") || > > Should the second string be dps800 ? > > > + !strcmp(id->name, "sgd009")) { > > + pdata = kzalloc(sizeof(struct pmbus_platform_data), > GFP_KERNEL); > > Please use devm_kzalloc(). > > > + if (!pdata) { > > + kfree(info); > > info was allocated with devm_kzalloc() and thus does not need kfree (besides, > if > at all, it would have to be devm_kfree). > > > + return -ENOMEM; > > + } > > + pdata->flags = PMBUS_SKIP_STATUS_CHECK; > > + } > > > > info->pages = id->driver_data; > > info->identify = pmbus_identify; > > + dev->platform_data = pdata; > > > > return pmbus_do_probe(client, id, info); > > } > > @@ -199,6 +212,9 @@ static const struct i2c_device_id pmbus_id[] = { > > {"tps544c20", 1}, > > {"tps544c25", 1}, > > {"udt020", 1}, > > + {"dps460", 1}, > > + {"dps800", 1}, > > + {"sgd009", 1}, > > Please list in alphabetic order. > > > {} > > }; > > > > diff --git a/drivers/hwmon/pmbus/pmbus_core.c > > b/drivers/hwmon/pmbus/pmbus_core.c > > index ba59eae..3d98070 100644 > > --- a/drivers/hwmon/pmbus/pmbus_core.c > > +++ b/drivers/hwmon/pmbus/pmbus_core.c > > @@ -1931,8 +1931,11 @@ EXPORT_SYMBOL_GPL(pmbus_do_probe); > > int pmbus_do_remove(struct i2c_client *client) > > { > > struct pmbus_data *data = i2c_get_clientdata(client); > > + const struct pmbus_platform_data *pdata = > > + dev_get_platdata(&client->dev); > > hwmon_device_unregister(data->hwmon_dev); > > kfree(data->group.attrs); > > + kfree(pdata); So, if I use in allocation pdata = devm_kzalloc(&client->dev, sizeof(struct pmbus_platform_data), GFP_KERNEL); I also can drop the above three lines, right? > > return 0; > > } > > EXPORT_SYMBOL_GPL(pmbus_do_remove); > >
