Message-ID: <alpine.DEB.2.02.1411200822390.9204@utopia.booyaka.com>
Date:	Thu, 20 Nov 2014 08:23:15 +0000 (UTC)
From:	Paul Walmsley <paul@...an.com>
To:	Nishanth Menon <nm@...com>
cc:	Tony Lindgren <tony@...mide.com>, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-omap@...r.kernel.org,
	"Franklin Cooper Jr." <fcooper@...com>
Subject: Re: [PATCH] ARM: DRA7: hwmod data: Add missing UART hwmod data

On Tue, 21 Oct 2014, Nishanth Menon wrote:

> From: Ambresh K <ambresh@...com>
> 
> We had constrainted hwmod entries to entries in dts which were present
> only for default mapped interrupts, the ones such as UARTs > 6 which
> needed IRQ crossbar configured were never added to hwmod database.
> 
> Add them now that IRQ crossbar is functional
> 
> Without this, enabling UARTs7 to 10 in dts results in the following crash:
> [    1.893829] omap_uart 48420000.serial: _od_fail_runtime_resume: FIXME: missing hwmod/omap_dev info
> [    1.903381] Unhandled fault: imprecise external abort (0x1406) at 0x00000000
> [    1.903381] ------------[ cut here ]------------
> [    1.903381] WARNING: CPU: 0 PID: 0 at drivers/bus/omap_l3_noc.c:147 l3_interrupt_handler+0x2ac/0x32c()
> [    1.903411] 44000000.ocp:L3 Custom Error: MASTER MPU TARGET L4_PER2_P3 (Read): Data Access in User mode during Functional access
> [    1.903411] Modules linked in:
> [    1.903411] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W      3.18.0-rc1-dirty #3
> [    1.903442] [<c0015270>] (unwind_backtrace) from [<c00119b4>] (show_stack+0x10/0x14)
> [    1.903442] [<c00119b4>] (show_stack) from [<c05e4afc>] (dump_stack+0x78/0x94)
> [    1.903472] [<c05e4afc>] (dump_stack) from [<c003fed0>] (warn_slowpath_common+0x6c/0x8c)
> [    1.903472] [<c003fed0>] (warn_slowpath_common) from [<c003ff84>] (warn_slowpath_fmt+0x30/0x40)
> [    1.903472] [<c003ff84>] (warn_slowpath_fmt) from [<c0333bfc>] (l3_interrupt_handler+0x2ac/0x32c)
> [    1.903503] [<c0333bfc>] (l3_interrupt_handler) from [<c008d6f8>] (handle_irq_event_percpu+0x60/0x230)
> [    1.903503] [<c008d6f8>] (handle_irq_event_percpu) from [<c008d904>] (handle_irq_event+0x3c/0x5c)
> [    1.903503] [<c008d904>] (handle_irq_event) from [<c00903b0>] (handle_fasteoi_irq+0xc4/0x190)
> [    1.903503] [<c00903b0>] (handle_fasteoi_irq) from [<c008d01c>] (generic_handle_irq+0x20/0x30)
> [    1.903533] [<c008d01c>] (generic_handle_irq) from [<c008d114>] (__handle_domain_irq+0x64/0xb8)
> [    1.903533] [<c008d114>] (__handle_domain_irq) from [<c00086e4>] (gic_handle_irq+0x20/0x60)
> [    1.903533] [<c00086e4>] (gic_handle_irq) from [<c05eb124>] (__irq_svc+0x44/0x5c)
> [    1.903533] Exception stack(0xc08d1f60 to 0xc08d1fa8)
> [    1.903564] 1f60: 00000001 00000001 00000000 c08dc930 c08d0000 00000000 00000000 00000000
> [    1.903564] 1f80: ffffffed c0978028 c08d89dc c08d8978 00000000 c08d1fa8 c0083fc0 c000f160
> [    1.903564] 1fa0: 20000013 ffffffff
> [    1.903564] [<c05eb124>] (__irq_svc) from [<c000f160>] (arch_cpu_idle+0x20/0x3c)
> [    1.903594] [<c000f160>] (arch_cpu_idle) from [<c0077c54>] (cpu_startup_entry+0x198/0x338)
> [    1.903594] [<c0077c54>] (cpu_startup_entry) from [<c0869be0>] (start_kernel+0x358/0x3c4)
> [    1.903594] [<c0869be0>] (start_kernel) from [<80008074>] (0x80008074)
> [    1.903594] ---[ end trace 293fc95d463cff71 ]---
> [    2.117553] Internal error: : 1406 [#1] SMP ARM
> [    2.122314] Modules linked in:
> [    2.125518] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G        W      3.18.0-rc1-dirty #3
> [    2.133850] task: ed868b80 ti: ed86a000 task.ti: ed86a000
> [    2.139526] PC is at serial_omap_probe+0x2fc/0x514
> [    2.144561] LR is at trace_hardirqs_on_caller+0xec/0x1c4
> [    2.150146] pc : [<c038f0f0>]    lr : [<c0083fc0>]    psr: 40000013
> [    2.150146] sp : ed86be18  ip : ed9bb57c  fp : f005e000
> [    2.162231] r10: 0000012a  r9 : ed9b4f80  r8 : edc5bdcd
> [    2.167724] r7 : edc58810  r6 : ed9bb400  r5 : ed9bb410  r4 : edc5bc10
> [    2.174560] r3 : 00000000  r2 : 00000000  r1 : 00000014  r0 : ffffffed
> [    2.181427] Flags: nZcv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
> [    2.189117] Control: 10c5387d  Table: 8000406a  DAC: 00000015
> [    2.195159] Process swapper/0 (pid: 1, stack limit = 0xed86a248)
> [    2.201477] Stack: (0xed86be18 to 0xed86c000)
> [    2.206054] be00:                                                       ed9ba2d0 00000000
> [    2.214660] be20: edc50150 00000001 c08cba58 00000000 00000000 ed9bb410 ffffffed c09481d8
> [    2.223236] be40: 00000000 c09481d8 c08cba58 00000000 00000000 c039bcfc c1170958 ed9bb410
> [    2.231842] be60: ed9bb444 c039a6f4 00000000 ed9bb410 c09481d8 ed9bb444 00000000 c08dc698
> [    2.240447] be80: edc4a100 c039a8b0 c09481d8 c039a81c 00000000 c0399060 ed8afaa8 ed92c110
> [    2.249053] bea0: c09481d8 edc482c0 c0949308 c0399ee0 c077f80c c09481d8 ed86a000 c09481d8
> [    2.257659] bec0: ed86a000 c08dc698 00000000 c039b088 00000000 00000000 ed86a000 c08a1924
> [    2.266235] bee0: c08a1904 c00089c4 00000000 00000000 00000000 00000000 60000093 00000000
> [    2.274841] bf00: 00000004 00000000 ed868b80 00000004 00000000 60000053 00000000 00000001
> [    2.283447] bf20: 00000000 c0083ea8 00000001 ed86a000 c08334bc ef7fc307 000000b2 c0059358
> [    2.292053] bf40: c07e176c c083299c 00000006 00000006 c08cb588 c08b69cc 00000006 c08b69ac
> [    2.300659] bf60: c097a280 000000b2 c08cba58 c0869588 00000000 c0869e04 00000006 00000006
> [    2.309234] bf80: c0869588 00000000 00000000 c05dfd7c 00000000 00000000 00000000 00000000
> [    2.317840] bfa0: 00000000 c05dfd84 00000000 c000e668 00000000 00000000 00000000 00000000
> [    2.326446] bfc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
> [    2.335052] bfe0: 00000000 00000000 00000000 00000000 00000013 00000000 020405d0 00090c40
> [    2.343658] [<c038f0f0>] (serial_omap_probe) from [<c039bcfc>] (platform_drv_probe+0x48/0x98)
> [    2.352630] [<c039bcfc>] (platform_drv_probe) from [<c039a6f4>] (driver_probe_device+0x10c/0x234)
> [    2.361968] [<c039a6f4>] (driver_probe_device) from [<c039a8b0>] (__driver_attach+0x94/0x98)
> [    2.370819] [<c039a8b0>] (__driver_attach) from [<c0399060>] (bus_for_each_dev+0x54/0x88)
> [    2.379425] [<c0399060>] (bus_for_each_dev) from [<c0399ee0>] (bus_add_driver+0xdc/0x1d4)
> [    2.388031] [<c0399ee0>] (bus_add_driver) from [<c039b088>] (driver_register+0x78/0xf4)
> [    2.396453] [<c039b088>] (driver_register) from [<c08a1924>] (serial_omap_init+0x20/0x40)
> [    2.405059] [<c08a1924>] (serial_omap_init) from [<c00089c4>] (do_one_initcall+0x80/0x1cc)
> [    2.413757] [<c00089c4>] (do_one_initcall) from [<c0869e04>] (kernel_init_freeable+0x1b8/0x28c)
> [    2.422912] [<c0869e04>] (kernel_init_freeable) from [<c05dfd84>] (kernel_init+0x8/0xe4)
> [    2.431396] [<c05dfd84>] (kernel_init) from [<c000e668>] (ret_from_fork+0x14/0x2c)
> [    2.439361] Code: e1b02f23 020320f0 0203300f 01a02222 (0a000021)
> [    2.445770] ---[ end trace 293fc95d463cff72 ]---
> [    2.450683] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
> [    2.450683]
> [    2.460296] CPU0: stopping
> [    2.463134] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G      D W      3.18.0-rc1-dirty #3
> [    2.471405] [<c0015270>] (unwind_backtrace) from [<c00119b4>] (show_stack+0x10/0x14)
> [    2.479522] [<c00119b4>] (show_stack) from [<c05e4afc>] (dump_stack+0x78/0x94)
> [    2.487060] [<c05e4afc>] (dump_stack) from [<c001394c>] (handle_IPI+0x190/0x264)
> [    2.494781] [<c001394c>] (handle_IPI) from [<c000871c>] (gic_handle_irq+0x58/0x60)
> [    2.502716] [<c000871c>] (gic_handle_irq) from [<c05eb124>] (__irq_svc+0x44/0x5c)
> [    2.510528] Exception stack(0xc08d1f60 to 0xc08d1fa8)
> [    2.515808] 1f60: c000f15c 00000000 00000000 00000000 c08d0000 00000000 00000000 00000000
> [    2.524353] 1f80: ffffffed c0978028 c08d89dc c08d8978 00000000 c08d1fa8 c000f15c c000f160
> [    2.532897] 1fa0: 60000013 ffffffff
> [    2.536529] [<c05eb124>] (__irq_svc) from [<c000f160>] (arch_cpu_idle+0x20/0x3c)
> [    2.544281] [<c000f160>] (arch_cpu_idle) from [<c0077c54>] (cpu_startup_entry+0x198/0x338)
> [    2.552917] [<c0077c54>] (cpu_startup_entry) from [<c0869be0>] (start_kernel+0x358/0x3c4)
> [    2.561462] [<c0869be0>] (start_kernel) from [<80008074>] (0x80008074)
> [    2.568298] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
> [
> 
> Reported-by: Franklin Cooper Jr. <fcooper@...com>
> Signed-off-by: Nishanth Menon <nm@...com>
> Signed-off-by: Ambresh K <ambresh@...com>

Thanks, queued.

- Paul
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