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Message-ID: <CAL8zT=jDUyxjimFxBFk56q+B9VwZdnijrU9VF7LBm4X4mNKp+g@mail.gmail.com> Date: Tue, 5 Aug 2014 17:43:17 +0200 From: Jean-Michel Hautbois <jhautbois@...il.com> To: B_B_Singh@...l.com Cc: tiwai@...e.de, Greg KH <gregkh@...uxfoundation.org>, Abhay_Salunke@...l.com, Arnd Bergmann <arnd@...db.de>, kay@...y.org, ming.lei@...onical.com, Stefan Roese <sr@...x.de>, teg@...m.no, Stuart_Hayes@...l.com, Srinivas_G_Gowda@...l.com, linux-kernel <linux-kernel@...r.kernel.org> Subject: Re: patch "firmware loader: allow disabling of udev as firmware loader" added to driver-core tree 2014-08-01 22:01 GMT+02:00 <B_B_Singh@...l.com>: > Hi Takashi, > > Sorry for the late response, I tried with latest stable kernel 3.15.8. surprisingly the BIOS update works even without applying the patch in both the cases. Hi,I'm sorry for my late answer too, but I didn't try this patch recently... I have a Lattice FPGA on my board, and it seems that your patch breaks the firmware loading. I have the following config : CONFIG_FW_LOADER=y CONFIG_FW_LOADER_USER_HELPER=n FW_LOADER_USER_HELPER_FALLBACK=n LATTICE_ECP3_CONFIG=y And my kernel panics : [ 1.180677] lattice-ecp3 spi2.3: FPGA bitstream configuration driver registered [ 1.188285] lattice-ecp3 spi2.3: Direct firmware load for lattice-ecp3.bit failed with error -2 [ 1.197063] Unable to handle kernel NULL pointer dereference at virtual address 00000000 [ 1.203616] spi_imx 2010000.ecspi: probed [ 1.215947] pgd = 80004000 [ 1.218671] [00000000] *pgd=00000000 [ 1.222284] Internal error: Oops: 5 [#1] SMP ARM [ 1.226914] Modules linked in: [ 1.230007] CPU: 1 PID: 47 Comm: kworker/1:1 Not tainted 3.16.0+yocto+g403c2fc #1 [ 1.237516] Workqueue: events request_firmware_work_func [ 1.242861] task: be1d2700 ti: be20e000 task.ti: be20e000 [ 1.248281] PC is at firmware_load+0x10/0x47c [ 1.252652] LR is at request_firmware_work_func+0x38/0x58 [ 1.258064] pc : [<80390490>] lr : [<803834c8>] psr: 20000113 [ 1.258064] sp : be20fda0 ip : be20fe68 fp : be20fe64 [ 1.269552] r10: be20e008 r9 : 00000001 r8 : be7c5a00 [ 1.274788] r7 : be20fea8 r6 : be7c2500 r5 : be3f95c0 r4 : be3f95c0 [ 1.281326] r3 : 80390480 r2 : be3f9600 r1 : bd829800 r0 : 00000000 [ 1.287866] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel [ 1.295185] Control: 10c5387d Table: 1000404a DAC: 00000015 [ 1.300941] Process kworker/1:1 (pid: 47, stack limit = 0xbe20e240) [ 1.307220] Stack: (0xbe20fda0 to 0xbe210000) [ 1.311595] fda0: be20fdd4 be20fdb0 803825b4 800e44f8 00000001 00000000 80382614 be3f9600 [ 1.319787] fdc0: 811ccae8 be3f9600 806e3bd4 be3f9600 fffffffe fffffffe 00000001 be0eb000 [ 1.327980] fde0: be20fe04 be20fdf0 803826c8 800e44f8 be1d2700 80870aa8 be20fe64 be20fe08 [ 1.336172] fe00: 80382d18 80382668 be3fa348 be20e000 be1d2700 be078000 80870aa8 be3f9600 [ 1.344364] fe20: be3fa348 be20fe6c bd829800 00000003 be3fa300 803834b8 00000001 be3f95c0 [ 1.352556] fe40: be3f95c0 be7c2500 be20fea8 be7c5a00 00000001 be20e008 be20fe84 be20fe68 [ 1.360748] fe60: 803834c8 8039048c be0c2800 00000000 be7c2500 be0c2800 be20fee4 be20fe88 [ 1.368939] fe80: 8004245c 8038349c 00000001 00000000 800423e8 be7c2500 80042e54 00000000 [ 1.377131] fea0: 00000000 00000000 811ccb7c 80b0bd70 00000000 8086f89c 806acc48 be7c2500 [ 1.385322] fec0: be7c2530 be20e028 be20e000 be0c2818 00000008 be0c2800 be20ff24 be20fee8 [ 1.393514] fee0: 80042f30 800422bc 806acd4c be0c5280 00000000 be0c2800 80042de8 be0c5280 [ 1.401706] ff00: 00000000 be0c2800 80042de8 00000000 00000000 00000000 be20ffac be20ff28 [ 1.409898] ff20: 80048ed0 80042df4 800675d0 00000000 be20ff54 be0c2800 00000000 00000000 [ 1.418089] ff40: dead4ead ffffffff ffffffff 809caae0 00000000 00000000 80825c5c be20ff5c [ 1.426280] ff60: be20ff5c 00000000 00000000 dead4ead ffffffff ffffffff 809caae0 00000000 [ 1.434472] ff80: 00000000 80825c5c be20ff88 be20ff88 be0c5280 80048df4 00000000 00000000 [ 1.442663] ffa0: 00000000 be20ffb0 8000f748 80048e00 00000000 00000000 00000000 00000000 [ 1.450853] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 1.459044] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 40030210 12290009 [ 1.467229] Backtrace: [ 1.469719] [<80390480>] (firmware_load) from [<803834c8>] (request_firmware_work_func+0x38/0x58) [ 1.478600] r10:be20e008 r9:00000001 r8:be7c5a00 r7:be20fea8 r6:be7c2500 r5:be3f95c0 [ 1.486548] r4:be3f95c0 [ 1.489131] [<80383490>] (request_firmware_work_func) from [<8004245c>] (process_one_work+0x1ac/0x414) [ 1.498446] r4:be0c2800 [ 1.501019] [<800422b0>] (process_one_work) from [<80042f30>] (worker_thread+0x148/0x4e4) [ 1.509206] r10:be0c2800 r9:00000008 r8:be0c2818 r7:be20e000 r6:be20e028 r5:be7c2530 [ 1.517152] r4:be7c2500 [ 1.519729] [<80042de8>] (worker_thread) from [<80048ed0>] (kthread+0xdc/0xf8) [ 1.526960] r10:00000000 r9:00000000 r8:00000000 r7:80042de8 r6:be0c2800 r5:00000000 [ 1.534906] r4:be0c5280 [ 1.537483] [<80048df4>] (kthread) from [<8000f748>] (ret_from_fork+0x14/0x2c) [ 1.544715] r7:00000000 r6:00000000 r5:80048df4 r4:be0c5280 [ 1.550474] Code: e1a0c00d e92ddff0 e24cb004 e24dd09c (e5903000) [ 1.556642] ---[ end trace d18e8b19760cc1e3 ]--- JM -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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