• Ricardo Ribalda's avatar
    pinctrl: meditatek: Startup with the IRQs disabled · 11780e37
    Ricardo Ribalda authored
    If the system is restarted via kexec(), the peripherals do not start
    with a known state.
    
    If the previous system had enabled an IRQs we will receive unexected
    IRQs that can lock the system.
    
    [   28.109251] watchdog: BUG: soft lockup - CPU#0 stuck for 26s!
    [swapper/0:0]
    [   28.109263] Modules linked in:
    [   28.109273] CPU: 0 PID: 0 Comm: swapper/0 Not tainted
    5.15.79-14458-g4b9edf7b1ac6 #1 9f2e76613148af94acccd64c609a552fb4b4354b
    [   28.109284] Hardware name: Google Elm (DT)
    [   28.109290] pstate: 40400005 (nZcv daif +PAN -UAO -TCO -DIT -SSBS
    		BTYPE=--)
    [   28.109298] pc : __do_softirq+0xa0/0x388
    [   28.109309] lr : __do_softirq+0x70/0x388
    [   28.109316] sp : ffffffc008003ee0
    [   28.109321] x29: ffffffc008003f00 x28: 000000000000000a x27:
    0000000000000080
    [   28.109334] x26: 0000000000000001 x25: ffffffefa7b350c0 x24:
    ffffffefa7b47480
    [   28.109346] x23: ffffffefa7b3d000 x22: 0000000000000000 x21:
    ffffffefa7b0fa40
    [   28.109358] x20: ffffffefa7b005b0 x19: ffffffefa7b47480 x18:
    0000000000065b6b
    [   28.109370] x17: ffffffefa749c8b0 x16: 000000000000018c x15:
    00000000000001b8
    [   28.109382] x14: 00000000000d3b6b x13: 0000000000000006 x12:
    0000000000057e91
    [   28.109394] x11: 0000000000000000 x10: 0000000000000000 x9 :
    ffffffefa7b47480
    [   28.109406] x8 : 00000000000000e0 x7 : 000000000f424000 x6 :
    0000000000000000
    [   28.109418] x5 : ffffffefa7dfaca0 x4 : ffffffefa7dfadf0 x3 :
    000000000000000f
    [   28.109429] x2 : 0000000000000000 x1 : 0000000000000100 x0 :
    0000000001ac65c5
    [   28.109441] Call trace:
    [   28.109447]  __do_softirq+0xa0/0x388
    [   28.109454]  irq_exit+0xc0/0xe0
    [   28.109464]  handle_domain_irq+0x68/0x90
    [   28.109473]  gic_handle_irq+0xac/0xf0
    [   28.109480]  call_on_irq_stack+0x28/0x50
    [   28.109488]  do_interrupt_handler+0x44/0x58
    [   28.109496]  el1_interrupt+0x30/0x58
    [   28.109506]  el1h_64_irq_handler+0x18/0x24
    [   28.109512]  el1h_64_irq+0x7c/0x80
    [   28.109519]  arch_local_irq_enable+0xc/0x18
    [   28.109529]  default_idle_call+0x40/0x140
    [   28.109539]  do_idle+0x108/0x290
    [   28.109547]  cpu_startup_entry+0x2c/0x30
    [   28.109554]  rest_init+0xe8/0xf8
    [   28.109562]  arch_call_rest_init+0x18/0x24
    [   28.109571]  start_kernel+0x338/0x42c
    [   28.109578]  __primary_switched+0xbc/0xc4
    [   28.109588] Kernel panic - not syncing: softlockup: hung tasks
    Signed-off-by: default avatarRicardo Ribalda <ribalda@chromium.org>
    Link: https://lore.kernel.org/r/20221122-mtk-pinctrl-v1-1-bedf5655a3d2@chromium.orgReviewed-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
    Reviewed-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
    Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
    11780e37
mtk-eint.c 13 KB