From e291fd20ef0870ed527470ca9c2402ba6f44d31c Mon Sep 17 00:00:00 2001 From: Barry Song Date: Wed, 5 Mar 2014 14:55:02 +0800 Subject: [PATCH] pinctrl: sirf: fix kernel panic in gpio_lock_as_irq commit 655dada6277991 causes kernel panic, this patch fixes it. [ 1.197816] [ffffffee] *pgd=0d7fd821, *pte=00000000, *ppte=00000000 [ 1.204070] Internal error: Oops: 17 [#1] PREEMPT SMP ARM [ 1.209447] Modules linked in: [ 1.212490] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.14.0-rc1 #3 [ 1.218737] task: cd03c000 ti: cd040000 task.ti: cd040000 [ 1.224127] PC is at gpiod_lock_as_irq+0xc/0x64 [ 1.228634] LR is at sirfsoc_gpio_irq_startup+0x18/0x44 [ 1.233842] pc : [] lr : [] psr: a0000193 [ 1.233842] sp : cd041d30 ip : 00000000 fp : 00000000 [ 1.245296] r10: 00000000 r9 : cd023db4 r8 : 60000113 [ 1.250505] r7 : 0000003e r6 : cd023dd4 r5 : c06bfa54 r4 : cd023d80 [ 1.257014] r3 : 00000020 r2 : 00000000 r1 : ffffffea r0 : ffffffea [ 1.263526] Flags: NzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment kernel [ 1.270903] Control: 10c53c7d Table: 00004059 DAC: 00000015 [ 1.276631] Process swapper/0 (pid: 1, stack limit = 0xcd040240) [ 1.282620] Stack: (0xcd041d30 to 0xcd042000) [ 1.286963] 1d20: cd023d80 c01d1c38 c01d1c20 cd023d80 [ 1.295124] 1d40: 00000001 c0068438 cd023d80 ccb6d880 cd023dd4 c0067044 0000718e c006719c [ 1.286963] 1d20: cd023d80 c01d1c38 c01d1c20 cd023d80 [ 1.295124] 1d40: 00000001 c0068438 cd023d80 ccb6d880 cd023dd4 c0067044 0000718e c006719c [ 1.295124] 1d40: 00000001 c0068438 cd023d80 ccb6d880 cd023dd4 c0067044 0000718e c006719c [ 1.303283] 1d60: 00000800 00000083 ccb6d880 cd023d80 c02b41d8 00000083 0000003e ccb7c410 [ 1.311442] 1d80: 00000000 c00671dc 00000083 0000003e c02b41d8 cd3dd5c0 0000003e ccb7c634 [ 1.319601] 1da0: cd040030 c00672a8 cd3dd5c0 ccb7c410 ccb6d340 ccb7c410 ccb6d340 cd3dd400 [ 1.327760] 1dc0: cd3dd410 c02b4434 ccb7c410 c01265a8 00000001 cd3dd410 c0687108 00000000 [ 1.335919] 1de0: c0687108 00000000 00000000 c0240170 c0240158 cd3dd410 c06c30d0 c023e8bc [ 1.344079] 1e00: c023e9d4 00000000 cd3dd410 c023e9d4 c0682150 c023cf88 cd003e98 cd2d50c4 [ 1.352238] 1e20: cd3dd410 cd3dd444 c06822f0 c023e768 cd3dd418 cd3dd410 c06822f0 c023de14 [ 1.360397] 1e40: cd3dd418 00000000 cd3dd410 c023c398 cd041e78 cd041ea8 cd3dd400 cd3dd410 [ 1.368556] 1e60: 00000083 00000000 cd3dd400 cd3dd410 00000083 000000c8 c04e00c8 c023fee8 [ 1.376715] 1e80: 00000000 cd041ea8 cd3dd400 00000001 00000083 c024048c c0435ef8 c0434dec [ 1.384874] 1ea0: c068da58 c04c6d04 c0682150 c0435ef8 ffffffff 00000000 00000000 c068da58 [ 1.393033] 1ec0: 00000020 00000000 00000000 00000000 c05dabb8 00000007 c068d640 c068d640 [ 1.401193] 1ee0: c04c247c c04c249c 00000000 c00088e8 cd004c00 c043bbb8 cd029180 c03812a0 [ 1.409352] 1f00: 00000000 00000000 60000113 c0673728 60000113 c0673728 00000000 00000000 [ 1.417511] 1f20: cd7fce01 c0390a54 00000065 c003a81c c049e8bc 00000007 cd7fce0e 00000007 [ 1.425670] 1f40: 00000000 c05dabb8 00000007 c068d640 c068d640 c04c050c c04e00c8 00000065 [ 1.433829] 1f60: c04e00c0 c04c0c54 00000007 00000007 c04c050c c037d8fc cd03c000 c004322c [ 1.441988] 1f80: c0662b40 0000d640 c03737c0 00000000 00000000 00000000 00000000 00000000 [ 1.450147] 1fa0: 00000000 c03737cc 00000000 c000e478 00000000 00000000 00000000 00000000 [ 1.458307] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.466467] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000 0002d481 05014092 [ 1.474640] [] (gpiod_lock_as_irq) from [] (sirfsoc_gpio_irq_startup+0x18/0x44) [ 1.483661] [] (sirfsoc_gpio_irq_startup) from [] (irq_startup+0x34/0x6c) [ 1.492163] [] (irq_startup) from [] (__setup_irq+0x450/0x4b8) [ 1.499714] [] (__setup_irq) from [] (request_threaded_irq+0xa8/0x128) [ 1.507960] [] (request_threaded_irq) from [] (request_any_context_irq+0x4c/0x7c) [ 1.517164] [] (request_any_context_irq) from [] (gpio_extcon_probe+0x144/0x1d4) [ 1.526279] [] (gpio_extcon_probe) from [] (platform_drv_probe+0x18/0x48) [ 1.534783] [] (platform_drv_probe) from [] (driver_probe_device+0x120/0x238) [ 1.543641] [] (driver_probe_device) from [] (bus_for_each_drv+0x58/0x8c) [ 1.552143] [] (bus_for_each_drv) from [] (device_attach+0x74/0x88) [ 1.560126] [] (device_attach) from [] (bus_probe_device+0x84/0xa8) [ 1.568113] [] (bus_probe_device) from [] (device_add+0x440/0x520) [ 1.576012] [] (device_add) from [] (platform_device_add+0xb4/0x214) [ 1.584084] [] (platform_device_add) from [] (platform_device_register_full+0xb8/0xdc) [ 1.593719] [] (platform_device_register_full) from [] (sirfsoc_init_late+0xec/0xf4) [ 1.603185] [] (sirfsoc_init_late) from [] (init_machine_late+0x20/0x28) [ 1.611603] [] (init_machine_late) from [] (do_one_initcall+0xf8/0x144) [ 1.619934] [] (do_one_initcall) from [] (kernel_init_freeable+0x13c/0x1dc) [ 1.628620] [] (kernel_init_freeable) from [] (kernel_init+0xc/0x118) Signed-off-by: Barry Song Signed-off-by: Linus Walleij --- drivers/pinctrl/sirf/pinctrl-sirf.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/pinctrl/sirf/pinctrl-sirf.c b/drivers/pinctrl/sirf/pinctrl-sirf.c index a0d6152701cd..617a4916b50f 100644 --- a/drivers/pinctrl/sirf/pinctrl-sirf.c +++ b/drivers/pinctrl/sirf/pinctrl-sirf.c @@ -598,7 +598,7 @@ static unsigned int sirfsoc_gpio_irq_startup(struct irq_data *d) { struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); - if (gpio_lock_as_irq(&bank->chip.gc, d->hwirq)) + if (gpio_lock_as_irq(&bank->chip.gc, d->hwirq % SIRFSOC_GPIO_BANK_SIZE)) dev_err(bank->chip.gc.dev, "unable to lock HW IRQ %lu for IRQ\n", d->hwirq); @@ -611,7 +611,7 @@ static void sirfsoc_gpio_irq_shutdown(struct irq_data *d) struct sirfsoc_gpio_bank *bank = irq_data_get_irq_chip_data(d); sirfsoc_gpio_irq_mask(d); - gpio_unlock_as_irq(&bank->chip.gc, d->hwirq); + gpio_unlock_as_irq(&bank->chip.gc, d->hwirq % SIRFSOC_GPIO_BANK_SIZE); } static struct irq_chip sirfsoc_irq_chip = { -- 2.20.1