Re: i2c core debug message issue

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On Fri, Mar 23, 2018 at 03:56:27PM +0530, asadpt iqroot wrote:
> Hi all
> 
> In Jetson Tx 2 board, we enabled i2c core debug messages
> (CONFIG_I2C_CORE_DEBUG) in linux kernel config. But while booting the
> board enters in a loop and gives dmesg as
> 
> 
> * 63 printk messages dropped ** [ 97.313148] ina3221x 0-0041: uevent
> ** 58 printk messages dropped ** [ 97.320210] ina3221x 0-0040: uevent
> ** 58 printk messages dropped ** [ 97.327111] ina3221x 0-0043: uevent
> ** 58 printk messages dropped ** [ 97.336461] pca953x 0-0077: uevent
> ** 59 printk messages dropped ** [ 97.343878] max77620 4-003c: uevent
> ** 58 printk messages dropped ** [ 97.351046] max77620 4-003c: uevent
> ** 59 printk messages dropped ** [ 97.358435] nct1008_nct72 7-004c: uevent
> ** 60 printk messages dropped ** [ 97.365804] dummy 4-0068: uevent
> ** 59 printk messages dropped ** [ 97.372745] ina3221x 0-0042: uevent
> ** 58 printk messages dropped ** [ 97.379776] ina3221x 0-0041: uevent
> ** 60 printk messages dropped ** [ 97.386834] pca953x 0-0077: uevent
> ** 57 printk messages dropped ** [ 97.393767] i2c 0-003c: uevent
> ** 56 printk messages dropped ** [ 97.400361] nct1008_nct72 7-004c: uevent
> ** 62 printk messages dropped ** [ 97.407815] nct1008_nct72 7-004c: uevent
> ** 62 printk messages dropped ** [ 97.415080] dummy 4-0068: uevent
> ** 57 printk messages dropped ** [ 97.422010] ina3221x 0-0041: uevent
> ** 61 printk messages dropped ** [ 97.429208] ina3221x 0-0043: uevent
> ** 56 printk messages dropped ** [ 97.435958] pca953x 0-0074: uevent
> ** 56 printk messages dropped ** [ 97.442593] pca953x 0-0074: uevent
> ** 55 printk messages dropped ** [ 97.449308] pca953x 0-0074: uevent
> ** 56 printk messages dropped ** [ 97.455922] pca953x 0-0077: uevent
> 
> 
> But it is not reaching login prompt.
> how to solve this issue..

I remember something like that. Which kernel version are you using? If
it's older than 4.6 you might want to cherry pick

	8dcf32175b4e ("i2c: prevent endless uevent loop with CONFIG_I2C_DEBUG_CORE")

Best regards
Uwe

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |



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