From mboxrd@z Thu Jan 1 00:00:00 1970 From: Pali =?utf-8?q?Roh=C3=A1r?= Subject: Re: v3.19: Nokia N900 (qemu) - omap_aes error Date: Mon, 9 Feb 2015 12:25:00 +0100 Message-ID: <201502091225.00497@pali> References: <201501311629.36431@pali> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2378097.JtB1e8RGtQ"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Return-path: Received: from mail-wg0-f50.google.com ([74.125.82.50]:45149 "EHLO mail-wg0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752682AbbBILZE (ORCPT ); Mon, 9 Feb 2015 06:25:04 -0500 In-Reply-To: <201501311629.36431@pali> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org, Tony Lindgren Cc: linux-kernel@vger.kernel.org, Pavel Machek , Sebastian Reichel , Aaro Koskinen , Ivaylo Dimitrov , Felipe Balbi , Nishanth Menon --nextPart2378097.JtB1e8RGtQ Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable On Saturday 31 January 2015 16:29:36 Pali Roh=C3=A1r wrote: > Hello, >=20 > when I enable problematic omap_aes.ko driver (also in DT) for > Nokia N900 machine in qemu (it emulates OMAP GP device, not > HS) I get this error message in dmesg at modprobe time: >=20 > [ 37.660339] ------------[ cut here ]------------ > [ 37.663940] WARNING: CPU: 0 PID: 173 at arch/arm/mach- > omap2/omap_hwmod.c:2182 _idle+0x28/0x64() > [ 37.668762] omap_hwmod: aes: idle state can only be entered > from enabled state > [ 37.672271] Modules linked in: omap_aes(+) > [ 37.675933] CPU: 0 PID: 173 Comm: modprobe Not tainted > 3.19.0- rc5+ #299 > [ 37.679534] Hardware name: Nokia RX-51 board > [ 37.683227] [] (unwind_backtrace) from > [] (show_stack+0x10/0x14) > [ 37.686920] [] (show_stack) from [] > (warn_slowpath_common+0x84/0xac) > [ 37.690765] [] (warn_slowpath_common) from > [] (warn_slowpath_fmt+0x2c/0x3c) > [ 37.694366] [] (warn_slowpath_fmt) from > [] (_idle+0x28/0x64) > [ 37.698791] [] (_idle) from [] > (omap_hwmod_idle+0x30/0x78) > [ 37.702636] [] (omap_hwmod_idle) from > [] (omap_device_idle+0x48/0x6c) > [ 37.707153] [] (omap_device_idle) from > [] (_od_runtime_suspend+0x1c/0x24) > [ 37.710723] [] (_od_runtime_suspend) from > [] (__rpm_callback+0x8c/0xdc) > [ 37.714385] [] (__rpm_callback) from [] > (rpm_callback+0x70/0x88) > [ 37.717987] [] (rpm_callback) from [] > (rpm_suspend+0x2e8/0x5a4) > [ 37.721710] [] (rpm_suspend) from [] > (__pm_runtime_idle+0x58/0x9c) > [ 37.725402] [] (__pm_runtime_idle) from > [] (omap_aes_probe+0x15c/0x448 [omap_aes]) > [ 37.733489] [] (omap_aes_probe [omap_aes]) from > [] (platform_drv_probe+0x48/0x90) > [ 37.740936] [] (platform_drv_probe) from > [] (really_probe+0xac/0x1e0) > [ 37.745025] [] (really_probe) from [] > (driver_probe_device+0x30/0x48) > [ 37.749847] [] (driver_probe_device) from > [] (__driver_attach+0x60/0x84) > [ 37.753601] [] (__driver_attach) from > [] (bus_for_each_dev+0x50/0x84) > [ 37.758422] [] (bus_for_each_dev) from > [] (bus_add_driver+0xac/0x1bc) > [ 37.762207] [] (bus_add_driver) from [] > (driver_register+0x9c/0xe0) > [ 37.765899] [] (driver_register) from > [] (do_one_initcall+0x100/0x1b0) > [ 37.769653] [] (do_one_initcall) from > [] (do_init_module+0x34/0x158) > [ 37.773590] [] (do_init_module) from [] > (SyS_init_module+0x54/0x64) > [ 37.777252] [] (SyS_init_module) from > [] (ret_fast_syscall+0x0/0x30) > [ 37.780975] ---[ end trace 86c3e025b92e700d ]--- > [ 37.784667] omap-aes 480c5000.aes: OMAP AES hw accel rev: > 0.0 [ 37.789794] of_dma_request_slave_channel: dma-names > property of node '/ocp/aes@480c5000' missing or empty > [ 37.797668] omap-aes 480c5000.aes: Unable to request in DMA > channel > [ 37.801391] omap_aes_dma_init: error: -12 >=20 > Error is not fatal, kernel does not crash and qemu emulation > working fine. But error is there. >=20 > I'm sure that qemu does not support omap aes hw emulation and > so I except error message about missing hw part (or something > else). But not above unwind_backtrace error message. >=20 > Any idea why it happens? It is probably not related to AES but > to DMA. It is for OMAP GP device (but emulated), so can TI > comment this problem (as this is not HS under NDA)? Hello, what does that error line means? [ 37.668762] omap_hwmod: aes: idle state can only be entered=20 from enabled state Is not it bug in omap_hwmod.c code? =2D-=20 Pali Roh=C3=A1r pali.rohar@gmail.com --nextPart2378097.JtB1e8RGtQ Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEABECAAYFAlTYmQwACgkQi/DJPQPkQ1I7NACeJR5bxdeCmlopYg6CA0GYiQ6C o2EAoMyWbP5fzuqisy93O+W5DQnjYzt2 =Ef/A -----END PGP SIGNATURE----- --nextPart2378097.JtB1e8RGtQ--