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30040818b3
In case runtime PM is enabled, do runtime PM clean up to remove cpu latency qos request, otherwise driver removal may have below kernel dump: [ 19.463299] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000048 [ 19.472161] Mem abort info: [ 19.474985] ESR = 0x0000000096000004 [ 19.478754] EC = 0x25: DABT (current EL), IL = 32 bits [ 19.484081] SET = 0, FnV = 0 [ 19.487149] EA = 0, S1PTW = 0 [ 19.490361] FSC = 0x04: level 0 translation fault [ 19.495256] Data abort info: [ 19.498149] ISV = 0, ISS = 0x00000004 [ 19.501997] CM = 0, WnR = 0 [ 19.504977] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000049f81000 [ 19.511432] [0000000000000048] pgd=0000000000000000, p4d=0000000000000000 [ 19.518245] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP [ 19.524520] Modules linked in: gpio_ir_recv(+) rc_core [last unloaded: rc_core] [ 19.531845] CPU: 0 PID: 445 Comm: insmod Not tainted 6.2.0-rc1-00028-g2c397a46d47c #72 [ 19.531854] Hardware name: FSL i.MX8MM EVK board (DT) [ 19.531859] pstate: 80000005 (Nzcv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 19.551777] pc : cpu_latency_qos_remove_request+0x20/0x110 [ 19.557277] lr : gpio_ir_recv_runtime_suspend+0x18/0x30 [gpio_ir_recv] [ 19.557294] sp : ffff800008ce3740 [ 19.557297] x29: ffff800008ce3740 x28: 0000000000000000 x27: ffff800008ce3d50 [ 19.574270] x26: ffffc7e3e9cea100 x25: 00000000000f4240 x24: ffffc7e3f9ef0e30 [ 19.574284] x23: 0000000000000000 x22: ffff0061803820f4 x21: 0000000000000008 [ 19.574296] x20: ffffc7e3fa75df30 x19: 0000000000000020 x18: ffffffffffffffff [ 19.588570] x17: 0000000000000000 x16: ffffc7e3f9efab70 x15: ffffffffffffffff [ 19.595712] x14: ffff800008ce37b8 x13: ffff800008ce37aa x12: 0000000000000001 [ 19.602853] x11: 0000000000000001 x10: ffffcbe3ec0dff87 x9 : 0000000000000008 [ 19.609991] x8 : 0101010101010101 x7 : 0000000000000000 x6 : 000000000f0bfe9f [ 19.624261] x5 : 00ffffffffffffff x4 : 0025ab8e00000000 x3 : ffff006180382010 [ 19.631405] x2 : ffffc7e3e9ce8030 x1 : ffffc7e3fc3eb810 x0 : 0000000000000020 [ 19.638548] Call trace: [ 19.640995] cpu_latency_qos_remove_request+0x20/0x110 [ 19.646142] gpio_ir_recv_runtime_suspend+0x18/0x30 [gpio_ir_recv] [ 19.652339] pm_generic_runtime_suspend+0x2c/0x44 [ 19.657055] __rpm_callback+0x48/0x1dc [ 19.660807] rpm_callback+0x6c/0x80 [ 19.664301] rpm_suspend+0x10c/0x640 [ 19.667880] rpm_idle+0x250/0x2d0 [ 19.671198] update_autosuspend+0x38/0xe0 [ 19.675213] pm_runtime_set_autosuspend_delay+0x40/0x60 [ 19.680442] gpio_ir_recv_probe+0x1b4/0x21c [gpio_ir_recv] [ 19.685941] platform_probe+0x68/0xc0 [ 19.689610] really_probe+0xc0/0x3dc [ 19.693189] __driver_probe_device+0x7c/0x190 [ 19.697550] driver_probe_device+0x3c/0x110 [ 19.701739] __driver_attach+0xf4/0x200 [ 19.705578] bus_for_each_dev+0x70/0xd0 [ 19.709417] driver_attach+0x24/0x30 [ 19.712998] bus_add_driver+0x17c/0x240 [ 19.716834] driver_register+0x78/0x130 [ 19.720676] __platform_driver_register+0x28/0x34 [ 19.725386] gpio_ir_recv_driver_init+0x20/0x1000 [gpio_ir_recv] [ 19.731404] do_one_initcall+0x44/0x2ac [ 19.735243] do_init_module+0x48/0x1d0 [ 19.739003] load_module+0x19fc/0x2034 [ 19.742759] __do_sys_finit_module+0xac/0x12c [ 19.747124] __arm64_sys_finit_module+0x20/0x30 [ 19.751664] invoke_syscall+0x48/0x114 [ 19.755420] el0_svc_common.constprop.0+0xcc/0xec [ 19.760132] do_el0_svc+0x38/0xb0 [ 19.763456] el0_svc+0x2c/0x84 [ 19.766516] el0t_64_sync_handler+0xf4/0x120 [ 19.770789] el0t_64_sync+0x190/0x194 [ 19.774460] Code: 910003fd a90153f3 aa0003f3 91204021 (f9401400) [ 19.780556] ---[ end trace 0000000000000000 ]--- Signed-off-by: Li Jun <jun.li@nxp.com> Signed-off-by: Sean Young <sean@mess.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.