diff options
Diffstat (limited to 'freed-ora/tags/f27/4.15.9-300.fc27.gnu/firmware-Drop-WARN-from-usermodehelper_read_trylock-.patch')
| -rw-r--r-- | freed-ora/tags/f27/4.15.9-300.fc27.gnu/firmware-Drop-WARN-from-usermodehelper_read_trylock-.patch | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/freed-ora/tags/f27/4.15.9-300.fc27.gnu/firmware-Drop-WARN-from-usermodehelper_read_trylock-.patch b/freed-ora/tags/f27/4.15.9-300.fc27.gnu/firmware-Drop-WARN-from-usermodehelper_read_trylock-.patch new file mode 100644 index 000000000..64b7dbefa --- /dev/null +++ b/freed-ora/tags/f27/4.15.9-300.fc27.gnu/firmware-Drop-WARN-from-usermodehelper_read_trylock-.patch @@ -0,0 +1,89 @@ +From: Laura Abbott <labbott@fedoraproject.org> +Date: Tue, 28 Apr 2015 15:37:44 -0700 +Subject: [PATCH] firmware: Drop WARN from usermodehelper_read_trylock error + case + +We've received a number of reports of warnings when coming +out of suspend with certain bluetooth firmware configurations: + +WARNING: CPU: 3 PID: 3280 at drivers/base/firmware_class.c:1126 +_request_firmware+0x558/0x810() +Modules linked in: ccm ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 +xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter +ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 +ip6table_mangle ip6table_security ip6table_raw ip6table_filter +ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 +nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw +binfmt_misc bnep intel_rapl iosf_mbi arc4 x86_pkg_temp_thermal +snd_hda_codec_hdmi coretemp kvm_intel joydev snd_hda_codec_realtek +iwldvm snd_hda_codec_generic kvm iTCO_wdt mac80211 iTCO_vendor_support +snd_hda_intel snd_hda_controller snd_hda_codec crct10dif_pclmul +snd_hwdep crc32_pclmul snd_seq crc32c_intel ghash_clmulni_intel uvcvideo +snd_seq_device iwlwifi btusb videobuf2_vmalloc snd_pcm videobuf2_core + serio_raw bluetooth cfg80211 videobuf2_memops sdhci_pci v4l2_common +videodev thinkpad_acpi sdhci i2c_i801 lpc_ich mfd_core wacom mmc_core +media snd_timer tpm_tis hid_logitech_hidpp wmi tpm rfkill snd mei_me mei +shpchp soundcore nfsd auth_rpcgss nfs_acl lockd grace sunrpc i915 +i2c_algo_bit drm_kms_helper e1000e drm hid_logitech_dj ptp pps_core +video +CPU: 3 PID: 3280 Comm: kworker/u17:0 Not tainted 3.19.3-200.fc21.x86_64 +Hardware name: LENOVO 343522U/343522U, BIOS GCET96WW (2.56 ) 10/22/2013 +Workqueue: hci0 hci_power_on [bluetooth] + 0000000000000000 0000000089944328 ffff88040acffb78 ffffffff8176e215 + 0000000000000000 0000000000000000 ffff88040acffbb8 ffffffff8109bc1a + 0000000000000000 ffff88040acffcd0 00000000fffffff5 ffff8804076bac40 +Call Trace: + [<ffffffff8176e215>] dump_stack+0x45/0x57 + [<ffffffff8109bc1a>] warn_slowpath_common+0x8a/0xc0 + [<ffffffff8109bd4a>] warn_slowpath_null+0x1a/0x20 + [<ffffffff814dbe78>] _request_firmware+0x558/0x810 + [<ffffffff814dc165>] request_firmware+0x35/0x50 + [<ffffffffa03a7886>] btusb_setup_bcm_patchram+0x86/0x590 [btusb] + [<ffffffff814d40e6>] ? rpm_idle+0xd6/0x230 + [<ffffffffa04d4801>] hci_dev_do_open+0xe1/0xa90 [bluetooth] + [<ffffffff810c51dd>] ? ttwu_do_activate.constprop.90+0x5d/0x70 + [<ffffffffa04d5980>] hci_power_on+0x40/0x200 [bluetooth] + [<ffffffff810b487c>] process_one_work+0x14c/0x3f0 + [<ffffffff810b52f3>] worker_thread+0x53/0x470 + [<ffffffff810b52a0>] ? rescuer_thread+0x300/0x300 + [<ffffffff810ba548>] kthread+0xd8/0xf0 + [<ffffffff810ba470>] ? kthread_create_on_node+0x1b0/0x1b0 + [<ffffffff81774958>] ret_from_fork+0x58/0x90 + [<ffffffff810ba470>] ? kthread_create_on_node+0x1b0/0x1b0 + +This occurs after every resume. + +When resuming, the bluetooth driver needs to re-request the +firmware. This re-request is happening before usermodehelper +is fully enabled. If the firmware load succeeded previously, the +caching behavior of the firmware code typically negates the +need to call the usermodehelper code again and the request +succeeds. If the firmware was never loaded because it isn't +actually present in the file system, this results in a call +to usermodehelper and a failure warning every resume. + +The proper fix is to add a reset_resume functionality to the +btusb driver to be able to handle the resume case. The +work for this is ongoing so in the mean time just silence +the warning since we know it's a problem. + +Bugzilla: 1133378 +Upstream-status: Working on it. It's a difficult problem :( +Signed-off-by: Laura Abbott <labbott@fedoraproject.org> +--- + drivers/base/firmware_class.c | 2 +- + 1 file changed, 1 insertion(+), 1 deletion(-) + +diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c +index 894bda114224..f7a8d27b6459 100644 +--- a/drivers/base/firmware_class.c ++++ b/drivers/base/firmware_class.c +@@ -1144,7 +1144,7 @@ _request_firmware(const struct firmware **firmware_p, const char *name, + } + } else { + ret = usermodehelper_read_trylock(); +- if (WARN_ON(ret)) { ++ if (ret) { + dev_err(device, "firmware: %s will not be loaded\n", + name); + goto out; |
