On Fri, Feb 27, 2015 at 08:59:44AM -0800, Dmitry Torokhov wrote: > On Fri, Feb 27, 2015 at 12:09:51PM +0100, Sébastien SZYMANSKI wrote: > > Hi, > > > > I am writing an I2C touchscreen driver for an i.MX6 based board. I > > compiled it as a module and when I unload it, I get the following warning: > > > > # modprobe sx8654 > > [ 46.261494] input: SX8654 I2C Touchscreen as > > /devices/soc0/soc/2100000.aips-bus/21a0000.i2c/i2c-0/0-0048/input/input1 > > # rmmod sx8654 > > [ 76.435223] ------------[ cut here ]------------ > > [ 76.439909] WARNING: CPU: 0 PID: 134 at fs/proc/generic.c:552 > > remove_proc_entry+0x148/0x164() > > [ 76.448582] remove_proc_entry: removing non-empty directory > > 'irq/208', leaking at least 'sx8654' > > ... > > > When I revert commit e4df3a0 (i2c: core: Dispose OF IRQ mapping at > > client removal time) I don't get the warning. > > > > Is this a bug in the i2c-core or am I doing something wrong in my driver? > > Yes, this commit breaks all drivers using devm* for IRQ management on > OF-based systemsi because devm* cleanup happens in device code, after > bus's remove() method returns. I'd recommend reverting and finding a > better way (making cleanup a custom devm action as well?). > Also it seems that the original patch is incomplete as I do not see us disposing the mapping when probe fails... -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
