Re: [PATCH v1 1/2] add device state flags and add error state
From: Ahmad Fatoum <a.fatoum@pengutronix.de>
Date: 2021-06-21 08:09:35
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 <a.fatoum@pengutronix.de>
quoted hunk ↗ jump to hunk
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> --- 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?
quoted hunk ↗ jump to hunk
}; /** @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...) \
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