Shreeya Patel <shreeya.patel@xxxxxxxxxxxxx> writes: > We are racing the registering of .to_irq when probing the > i2c driver. This results in random failure of touchscreen > devices. > > Following errors could be seen in dmesg logs when gc->to_irq is NULL > > [2.101857] i2c_hid i2c-FTS3528:00: HID over i2c has not been provided an Int IRQ > [2.101953] i2c_hid: probe of i2c-FTS3528:00 failed with error -22 > > To avoid this situation, defer probing until to_irq is registered. > > This issue has been reported many times in past and people have been > using workarounds like changing the pinctrl_amd to built-in instead > of loading it as a module or by adding a softdep for pinctrl_amd into > the config file. > > BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=209413 > Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx> > Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> > Reported-by: kernel test robot <lkp@xxxxxxxxx> > Signed-off-by: Shreeya Patel <shreeya.patel@xxxxxxxxxxxxx> Hi guys, This seems to not have reached the Linus tree on 5.17. If I'm not mistaken, it also hasn't reached linux-next as of today. Is there anything I'm missing here? This is required to prevent spurious probe crashes of devices like this FocalTech touchscreen, FT3528, when using pinctrl-amd. We've been carrying it downstream for quite a while. Thanks, -- Gabriel Krisman Bertazi
