Re: [PATCH v1 1/2] add device state flags and add error state
Hello, On 21.06.2021 10:07, Ahmad Fatoum wrote: On 06.06.21 14:23, Oleksij Rempel wrote: Add state flags for each registered device and set error state on each dev_err print. This states can be used by users to identify erroneous device. I thought this over a bit. We have dev_err calls when: - probes are permanently deferred - have actual probe (!= -ENODEV, != -ENXIO, != -EPROBE_DEFER) - after probe something fails (e.g. you got the regulator, but couldn't enable it) So, I think the hook point is appropriate. Board code could extend this and get a device and do some extra tests and use dev_set_err as appropriate. So feel free to add: Acked-by: Ahmad Fatoum Signed-off-by: Oleksij Rempel --- include/driver.h | 13 + include/printk.h | 5 - 2 files changed, 17 insertions(+), 1 deletion(-) diff --git a/include/driver.h b/include/driver.h index d84fe35d50..b64a8e258c 100644 --- a/include/driver.h +++ b/include/driver.h @@ -88,6 +88,9 @@ struct device_d { * when the driver should actually detect client devices */ int (*detect) (struct device_d *); + +#define DEV_ERRBIT(0) + u32 run_flags; Just turn it into a bit field instead? }; /** @brief Describes a driver present in the system */ @@ -361,6 +364,16 @@ static inline int dev_close_default(struct device_d *dev, struct filep *f) return 0; } +static inline void dev_set_err(struct device_d *dev) +{ + dev->run_flags |= DEV_ERR; +} + +static inline bool dev_have_err(struct device_d *dev) +{ + return !!(dev->run_flags & DEV_ERR); Isn't return dev->run_flags & DEV_ERR enough here? Best Bartek +} + struct bus_type { char *name; int (*match)(struct device_d *dev, struct driver_d *drv); diff --git a/include/printk.h b/include/printk.h index f83ad3bf07..6c563be3e6 100644 --- a/include/printk.h +++ b/include/printk.h @@ -61,7 +61,10 @@ static inline int pr_print(int level, const char *format, ...) #define dev_crit(dev, format, arg...) \ __dev_printf(2, (dev) , format , ## arg) #define dev_err(dev, format, arg...) \ - __dev_printf(3, (dev) , format , ## arg) + ({ \ You're already using statement expressions, so you could add a struct device_d *__dev = (dev); here and use that. + dev_set_err(dev); \ + __dev_printf(3, (dev) , format , ## arg); \ + }) #define dev_warn(dev, format, arg...) \ __dev_printf(4, (dev) , format , ## arg) #define dev_notice(dev, format, arg...) \ ___ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox
Re: [PATCH v1 1/2] add device state flags and add error state
On 06.06.21 14:23, Oleksij Rempel wrote: > Add state flags for each registered device and set error state on each > dev_err print. > This states can be used by users to identify erroneous device. I thought this over a bit. We have dev_err calls when: - probes are permanently deferred - have actual probe (!= -ENODEV, != -ENXIO, != -EPROBE_DEFER) - after probe something fails (e.g. you got the regulator, but couldn't enable it) So, I think the hook point is appropriate. Board code could extend this and get a device and do some extra tests and use dev_set_err as appropriate. So feel free to add: Acked-by: Ahmad Fatoum > Signed-off-by: Oleksij Rempel > --- > include/driver.h | 13 + > include/printk.h | 5 - > 2 files changed, 17 insertions(+), 1 deletion(-) > > diff --git a/include/driver.h b/include/driver.h > index d84fe35d50..b64a8e258c 100644 > --- a/include/driver.h > +++ b/include/driver.h > @@ -88,6 +88,9 @@ struct device_d { >* when the driver should actually detect client devices >*/ > int (*detect) (struct device_d *); > + > +#define DEV_ERR BIT(0) > + u32 run_flags; Just turn it into a bit field instead? > }; > > /** @brief Describes a driver present in the system */ > @@ -361,6 +364,16 @@ static inline int dev_close_default(struct device_d > *dev, struct filep *f) > return 0; > } > > +static inline void dev_set_err(struct device_d *dev) > +{ > + dev->run_flags |= DEV_ERR; > +} > + > +static inline bool dev_have_err(struct device_d *dev) > +{ > + return !!(dev->run_flags & DEV_ERR); > +} > + > struct bus_type { > char *name; > int (*match)(struct device_d *dev, struct driver_d *drv); > diff --git a/include/printk.h b/include/printk.h > index f83ad3bf07..6c563be3e6 100644 > --- a/include/printk.h > +++ b/include/printk.h > @@ -61,7 +61,10 @@ static inline int pr_print(int level, const char *format, > ...) > #define dev_crit(dev, format, arg...)\ > __dev_printf(2, (dev) , format , ## arg) > #define dev_err(dev, format, arg...) \ > - __dev_printf(3, (dev) , format , ## arg) > + ({ \ You're already using statement expressions, so you could add a struct device_d *__dev = (dev); here and use that. > + dev_set_err(dev); \ > + __dev_printf(3, (dev) , format , ## arg); \ > + }) > #define dev_warn(dev, format, arg...)\ > __dev_printf(4, (dev) , format , ## arg) > #define dev_notice(dev, format, arg...) \ > -- Pengutronix e.K. | | Steuerwalder Str. 21 | http://www.pengutronix.de/ | 31137 Hildesheim, Germany | Phone: +49-5121-206917-0| Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917- | ___ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox