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Groups > linux.kernel > #1565364

Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900

From Pavel Machek <pavel@ucw.cz>
Newsgroups linux.kernel
Subject Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900
Date 2017-01-24 00:30 +0100
Message-ID <t2WdH-4AA-9@gated-at.bofh.it> (permalink)
References <t2Mem-6v8-13@gated-at.bofh.it> <t2NDs-7uE-15@gated-at.bofh.it> <t2NWN-7Bg-13@gated-at.bofh.it> <t2O6u-7EI-19@gated-at.bofh.it>
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Hi!

> > >I'll try to revert it on the top of v4.10-rc5 now... and yes, it fixes
> > >the issue.
> > >
> > >Any idea what went wrong and how to fix that?
> > >
> > >Anyway as we are at -rc5 and this is warning fix that caused a
> > >regression on different hardware... it should be reverted.
> > >
> > Agreed.
> > 
> > What exactly does "stopped working" mean ? That might help understanding
> > what went wrong.
> 
> /sys files related to battery no longer appear. I beieve this has
> something to do with it:
> 
> [    2.374877] of_get_named_gpiod_flags: parsed 'reset-gpios' property
> of node '/ocp@68000000/spi@48098000/tsc2005@0[0]' - status (0)
> [    2.375946] input: TSC2005 touchscreen as
> /devices/platform/68000000.ocp/48098000.spi/spi_master/spi1/spi1.0/input/input5
> [    2.392120] rx51-battery: probe of n900-battery failed with error
> -22

Mystery solved:

diff --git a/drivers/hwmon/hwmon.c b/drivers/hwmon/hwmon.c
index 3932f92..fe5ec82 100644
--- a/drivers/hwmon/hwmon.c
+++ b/drivers/hwmon/hwmon.c
@@ -545,8 +545,10 @@ __hwmon_device_register(struct device *dev, const char *name, void *drvdata,
 	int i, j, err, id;
 
 	/* Do not accept invalid characters in hwmon name attribute */
-	if (name && (!strlen(name) || strpbrk(name, "-* \t\n")))
+	if (name && (!strlen(name) || strpbrk(name, "-* \t\n"))) {
+		printk("hwmon: Invalid character detected: %s\n", name);
 		return ERR_PTR(-EINVAL);
+	}
 
 	id = ida_simple_get(&hwmon_ida, 0, 0, GFP_KERNEL);
 	if (id < 0)


pavel@n900:~$ dmesg | grep -5 Invalid
[    0.829650] of_get_named_gpiod_flags: parsed 'gpio-reset' property
of node '/ocp@68000000/i2c@48072000/tlv320aic3x@19[0]' - status (0)
[    0.833831] tsl2563 2-0029: model 7, rev. 0
[    0.837768] of_get_named_gpiod_flags: parsed 'enable-gpio' property
of node '/ocp@68000000/i2c@48072000/lp5523@32[0]' - status (0)
[    1.921417] omap_i2c 48072000.i2c: controller timed out
[    2.056823] lp5523x 2-0032: lp5523 Programmable led chip found
[    2.064147] hwmon: Invalid character detected: bq27200-0
[    2.064544] bq27xxx-battery 2-0055: failed to register battery
[    2.064605] bq27xxx-battery: probe of 2-0055 failed with error -22
[    2.065368] of_get_named_gpiod_flags: parsed 'power-gpio' property
of node '/ocp@68000000/i2c@48072000/tpa6130a2@60[0]' - status (0)
[    2.083221] bq2415x-charger 2-006b: automode supported, waiting for
events
[    2.084442] bq2415x-charger 2-006b: driver registered
--
[    2.369842] g_ether gadget: g_ether ready
[    2.377197] tsc2005 spi1.0: GPIO lookup for consumer reset
[    2.377227] tsc2005 spi1.0: using device tree for GPIO lookup
[    2.377288] of_get_named_gpiod_flags: parsed 'reset-gpios' property
of node '/ocp@68000000/spi@48098000/tsc2005@0[0]' - status (0)
[    2.378936] input: TSC2005 touchscreen as
/devices/platform/68000000.ocp/48098000.spi/spi_master/spi1/spi1.0/input/input5
[    2.395111] hwmon: Invalid character detected: rx51-battery
[    2.402587] rx51-battery: probe of n900-battery failed with error
-22
[    2.410247] omap_hsmmc 4809c000.mmc: GPIO lookup for consumer cd
[    2.410247] omap_hsmmc 4809c000.mmc: using device tree for GPIO
lookup
[    2.410278] of_get_named_gpiod_flags: can't parse 'cd-gpios'
property of node '/ocp@68000000/mmc@4809c000[0]'
[    2.410278] of_get_named_gpiod_flags: can't parse 'cd-gpio'
property of node '/ocp@68000000/mmc@4809c000[0]'

									Pavel


-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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Thread

v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-23 13:50 +0100
  Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pali Rohár <pali.rohar@gmail.com> - 2017-01-23 13:50 +0100
    Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-23 15:30 +0100
  Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-23 15:20 +0100
    Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-23 15:40 +0100
      Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-23 15:50 +0100
        Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-23 18:20 +0100
        Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-24 00:30 +0100
          Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-24 00:50 +0100
            Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Zhang Rui <rui.zhang@intel.com> - 2017-01-24 08:10 +0100
              Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-24 08:40 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-24 15:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-24 19:00 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-24 19:50 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-24 23:50 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Fabio Estevam <festevam@gmail.com> - 2017-01-25 00:10 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Zhang Rui <rui.zhang@intel.com> - 2017-01-25 06:40 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-25 11:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-25 12:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-25 13:00 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pali Rohár <pali.rohar@gmail.com> - 2017-01-25 13:10 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Zhang Rui <rui.zhang@intel.com> - 2017-01-27 02:40 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-27 03:10 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Zhang Rui <rui.zhang@intel.com> - 2017-01-27 04:50 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-27 08:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-27 12:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-27 15:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-27 20:10 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Zhang Rui <rui.zhang@intel.com> - 2017-01-27 15:50 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-27 19:30 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-27 20:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-27 20:40 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pali Rohár <pali.rohar@gmail.com> - 2017-01-27 09:40 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-27 12:30 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-27 15:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-27 20:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-27 12:40 +0100
              Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-24 15:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-24 15:20 +0100
                Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-24 15:40 +0100
            Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-24 08:40 +0100
              Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Guenter Roeck <linux@roeck-us.net> - 2017-01-24 15:20 +0100
    Re: v4.10-rc4 to v4.10-rc5: battery regression on Nokia N900 Pavel Machek <pavel@ucw.cz> - 2017-01-23 21:30 +0100

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