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Date: Sat, 07 Feb 2015 20:33:53 +0200 From: Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com> To: balbi@...com, Pali Rohár <pali.rohar@...il.com> CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, Pavel Machek <pavel@....cz>, Sebastian Reichel <sre@...nel.org>, Aaro Koskinen <aaro.koskinen@....fi> Subject: Re: [PATCH] usb: gadget: nokia: Add mass storage driver to g_nokia Hi, On 7.02.2015 20:01, Ivaylo Dimitrov wrote: > > > On 2.02.2015 21:14, Felipe Balbi wrote: >> On Mon, Feb 02, 2015 at 08:07:51PM +0100, Pali Rohár wrote: >>> On Monday 02 February 2015 20:01:11 Felipe Balbi wrote: >>>> Hi, >>>> >>>> On Mon, Feb 02, 2015 at 07:58:59PM +0100, Pali Rohár wrote: >>>>> On Monday 02 February 2015 19:54:58 Felipe Balbi wrote: >>>>>> Hi, >>>>>> >>>>>> On Sat, Jan 31, 2015 at 10:53:30AM +0100, Pali Rohár wrote: >>>>>>> This patch adds removable mass storage support to >>>>>>> g_nokia gadget (for N900). It means that at runtime >>>>>>> block device can be exported or unexported. So it does >>>>>>> not export anything by default and thus allows to use >>>>>>> MyDocs partition as before... >>>>>>> >>>>>>> Signed-off-by: Pali Rohár <pali.rohar@...il.com> >>>>>> >>>>>> thanks, but no thanks. Build your own using configfs. >>>>> >>>>> But it needs some userspace interaction right? >>>>> Then its not possible for nfsboot. >>>> >>>> oh, right... you're using nfsboot through g_nokia. Hmm, sounds >>>> like you need initramfs. >>> >>> Also compiling usb gadgets as external .ko modules is broken. >>> So I cannot use configfs, when I compile g_nokia even if I use >>> initramfs... >> >> yeah, there are people working on that and some patches already flying >> around for it. Meanwhile, you can make it built-in and use initramfs to >> add mass_storage through configfs to g_nokia, no issues. >> > > Bellow is the bactrace of the crash when g_nokia is modprobed. Any hint > on where to look for is appreciated. > > <0>[ 33.751983] Kernel panic - not syncing: Fatal exception > ÿÿT!19\00]\00]<6>[ 59.570159] bq2415x-charger 2-006b: automode enabled > <1>[ 59.597534] [bf286014] *pgd=8eda8811, *pte=00000000, *ppte=00000000 > <6>[ 59.609405] bq2415x-charger 2-006b: driver registered > <0>[ 59.640472] Internal error: Oops: 80000007 [#1] PREEMPT ARM > <4>[ 59.650421] Modules linked in: ipv6(+) bq2415x_charger(+) > g_mass_storage usb_f_mass_storage libcomposite configfs uinput adp1653 > ad5820 et8ek8 smiaregs hsi_char radio_platform_si4713 joydev > omap_ssi_port wl1251_spi wl1251 rx51_battery mac80211 isp1704_charger > smc91x mii cfg80211 si4713 v4l2_common crc7 videodev tsc2005 media > tsl2563 twl4030_vibra ff_memless lis3lv02d_i2c lis3lv02d omap_ssi > input_polldev hsi twl4030_wdt omap_wdt rtc_twl leds_lp5523 > leds_lp55xx_common > <4>[ 59.715332] CPU: 0 PID: 13 Comm: kworker/0:1 Not tainted > 3.19.0-rc5+ #2 > <4>[ 59.726501] Hardware name: Nokia RX-51 board > <4>[ 59.735168] Workqueue: events usb_gadget_work > <4>[ 59.743896] task: cf8ab900 ti: cf992000 task.ti: cf992000 > <4>[ 59.753692] PC is at 0xbf286014 > <4>[ 59.761108] LR is at try_get_usb_function_instance+0x90/0x9c > [libcomposite] > <4>[ 59.772613] pc : [<bf286014>] lr : [<bf2640c8>] psr: 80000113 > <4>[ 59.772613] sp : cf993e50 ip : 0000001c fp : 00000000 > <4>[ 59.793060] r10: 00000000 r9 : 00000000 r8 : cfcad600 > <4>[ 59.802581] r7 : cedaab80 r6 : 00000000 r5 : bf28444c r4 : > cedaab80 > <4>[ 59.813476] r3 : cedd8f38 r2 : 00000001 r1 : 00000000 r0 : > cedd8f04 > <4>[ 59.824310] Flags: Nzcv IRQs on FIQs on Mode SVC_32 ISA ARM > Segment kernel > <4>[ 59.836090] Control: 10c5387d Table: 8e970019 DAC: 00000015 > <0>[ 59.846252] Process kworker/0:1 (pid: 13, stack limit = 0xcf992238) > <0>[ 59.857086] Stack: (0xcf993e50 to 0xcf994000) > <0>[ 59.865814] 3e40: c03fb2d8 > bf266e68 cf1fdf00 c015d0dc > <0>[ 59.878723] 3e60: 92000000 00001000 00000000 c015d8d8 00001000 > 00000000 c03fb2d8 bf266e68 > <0>[ 59.891693] 3e80: 00000000 00000001 00000000 c00f58f8 cf801c80 > cedaab80 cf03b0b8 cedaac00 > <0>[ 59.904663] 3ea0: bf284424 c015d980 00000000 bf266e68 00000000 > cedaab80 bf28444c 00000000 > <0>[ 59.917572] 3ec0: cf03b0b8 cfcad600 00000000 bf263dd8 cf03b0b8 > bf28444c cf03b0b8 cf1fea00 > <0>[ 59.930450] 3ee0: c0620cd8 bf28444c c0609868 cfcad600 00000000 > 00000000 00000000 c02c5478 > <0>[ 59.943420] 3f00: bf284470 c0620cd8 c0606ff8 c02c5f54 cf98d080 > bf284470 c0606ff8 c0047288 > <0>[ 59.956390] 3f20: cf98d080 bf284470 00000001 cf98d080 c0606ff8 > c0607008 c0609868 cf98d098 > <0>[ 59.969360] 3f40: 00000008 00000000 00000000 c00477ec cf98a580 > 00000000 cf98d080 c00474c4 > <0>[ 59.982330] 3f60: 00000000 00000000 00000000 c004b148 22000000 > 00000000 11880000 cf98d080 > <0>[ 59.995208] 3f80: 00000000 cf993f84 cf993f84 00000000 cf993f90 > cf993f90 cf993fac cf98a580 > <0>[ 60.008026] 3fa0: c004b07c 00000000 00000000 c000e058 00000000 > 00000000 00000000 00000000 > <0>[ 60.020782] 3fc0: 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 00000000 > <0>[ 60.033355] 3fe0: 00000000 00000000 00000000 00000000 00000013 > 00000000 40000500 04000401 > <4>[ 60.045867] [<bf2640c8>] (try_get_usb_function_instance > [libcomposite]) from [<c015d0dc>] (__kernfs_create_file+0x7c/0xa0) > <4>[ 60.065155] [<c015d0dc>] (__kernfs_create_file) from [<c015d8d8>] > (sysfs_add_file_mode_ns+0x134/0x1ac) > <4>[ 60.082977] [<c015d8d8>] (sysfs_add_file_mode_ns) from > [<c015d980>] (sysfs_create_file_ns+0x30/0x44) > <4>[ 60.100952] [<c015d980>] (sysfs_create_file_ns) from [<cedaab80>] > (0xcedaab80) > <0>[ 60.112884] Code: bad PC value > <6>[ 60.210144] NET: Registered protocol family 10 > <6>[ 60.671600] bq27x00-battery 2-0055: support ver. 1.2.0 enabled > <6>[ 60.832885] bq27x00-battery 2-0055: battery is not calibrated! > ignoring capacity values > <6>[ 63.788269] Adding 786428k swap on /dev/mmcblk0p3. Priority:-1 > extents:1 across:786428k SS > <5>[ 64.057617] random: nonblocking pool is initialized > <6>[ 64.554016] NET: Registered protocol family 35 > <4>[ 65.667510] ---[ end trace 85b8d26ec312a8c1 ]--- > > > Regards, > Ivo Removing __init from nokia_bind declaration makes g_nokia working again. I guess someone who knows better than me that sections magic should take it from here. Ivo -- 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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