> -----Original Message----- > From: Dmitry Torokhov [mailto:dmitry.torokhov@xxxxxxxxx] > Sent: Tuesday, January 12, 2021 6:29 PM > To: Song Bao Hua (Barry Song) <song.bao.hua@xxxxxxxxxxxxx> > Cc: linux-input@xxxxxxxxxxxxxxx; linuxarm@xxxxxxxxxxxxx > Subject: [Linuxarm] Re: [PATCH] input - mk712: fix the kernel crash while mk712 > is selected > > On Fri, Jan 08, 2021 at 01:35:27PM +1300, Barry Song wrote: > > While debugging other issues, I enabled mk712 then I got the below crash > > during arm64 linux boot: > > [ 1.150412] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO BTYPE=--) > > [ 1.150541] pc : logic_outb+0x3c/0xa8 > > [ 1.150657] lr : mk712_init+0x74/0x1ec > > [ 1.150745] sp : ffff800011efbd40 > > [ 1.150950] x29: ffff800011efbd40 x28: 0000000000000000 > > [ 1.151098] x27: ffff800011681078 x26: ffff8000115d04b8 > > [ 1.151192] x25: ffff8000116ff6b4 x24: ffff8000115bac10 > > [ 1.151287] x23: ffff800011dfa000 x22: ffff800011b8dbe0 > > [ 1.151421] x21: ffff800011eac000 x20: 0000000000000000 > > [ 1.151527] x19: fffffbfffe800266 x18: 0000000000000000 > > [ 1.151674] x17: ffff800010a7bc38 x16: ffff800010a7b0e0 > > [ 1.151944] x15: 0000a0d665e7ee58 x14: 000000000000011a > > [ 1.152060] x13: 0000000000000001 x12: 0000000000000000 > > [ 1.152149] x11: 0000000000000000 x10: 0000000000000a60 > > [ 1.152291] x9 : 0000000000000000 x8 : ffff0000c0a2a480 > > [ 1.152429] x7 : 0000000000000000 x6 : ffff0000c0b0c9b8 > > [ 1.152522] x5 : 0000000000001000 x4 : ffff0000c03613b0 > > [ 1.152614] x3 : 0000000000000267 x2 : 0000000000000260 > > [ 1.152731] x1 : fffffbfffe800000 x0 : 0000000000ffbffe > > [ 1.153135] Call trace: > > [ 1.153342] logic_outb+0x3c/0xa8 > > [ 1.153434] mk712_init+0x74/0x1ec > > [ 1.153571] do_one_initcall+0x54/0x1b8 > > [ 1.153705] kernel_init_freeable+0x1d0/0x238 > > [ 1.153860] kernel_init+0x14/0x118 > > [ 1.153960] ret_from_fork+0x10/0x30 > > [ 1.154304] Code: d2bfd001 f2df7fe1 f2ffffe1 8b010273 (39000274) > > [ 1.155013] ---[ end trace f9b157c311d20edd ]--- > > [ 1.155854] Kernel panic - not syncing: Attempted to kill init! > exitcode=0x0000000b > > [ 1.156236] SMP: stopping secondary CPUs > > > > The driver is very old and resources are totally hardcoded, no bus model. > > It seems the simplest way to fix this issue is disabling it by parameter. > > If someone really needs the old driver, it should enable the parameter > > by cmdline. > > I wonder if we are not better off simply removing the driver. I doubt > there are any "Gateway AOL Connected Touchpad computers left, especially > ones that run 5.x kernels. Same here. Once a platform selects this driver, the platform will crash during boot. It seems we have no way to stop users from selecting it in Kconfig. Thanks Barry
