From: Alexey Brodkin Date: Tue, 5 Jul 2016 12:42:21 +0000 (+0300) Subject: usb: Remove annoying warning about bogus URB X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=aba6de38d273c68ba5c060c53e971f5fd592af76;p=openwrt%2Fstaging%2Fflorian.git usb: Remove annoying warning about bogus URB When USB Wi-Fi dongle based on Atheros AR9271 is connected to OHCI (USB 1.1) controller following warnings flood debug console: ------------------------>8--------------------------- usb 1-1: new full-speed USB device number 2 using ohci-platform usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size: 51008 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4 at drivers/usb/core/urb.c:450 usb_submit_urb+0x162/0x404 usb 1-1: BOGUS urb xfer, pipe 1 != type 3 Modules linked in: CPU: 0 PID: 4 Comm: kworker/0:0 Not tainted 4.6.3 #10 Workqueue: events request_firmware_work_func Stack Trace: arc_unwind_core.constprop.1+0x94/0x10c ---[ end trace 2249b79eac9991d1 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4 at drivers/usb/core/urb.c:450 usb_submit_urb+0x162/0x404 usb 1-1: BOGUS urb xfer, pipe 1 != type 3 Modules linked in: CPU: 0 PID: 4 Comm: kworker/0:0 Tainted: G W 4.6.3 #10 Workqueue: events request_firmware_work_func Stack Trace: arc_unwind_core.constprop.1+0x94/0x10c ---[ end trace 2249b79eac9991d2 ]--- ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4 at drivers/usb/core/urb.c:450 usb_submit_urb+0x162/0x404 usb 1-1: BOGUS urb xfer, pipe 1 != type 3 Modules linked in: CPU: 0 PID: 4 Comm: kworker/0:0 Tainted: G W 4.6.3 #10 Workqueue: events request_firmware_work_func Stack Trace: arc_unwind_core.constprop.1+0x94/0x10c ---[ end trace 2249b79eac9991d3 ]--- ... ------------------------>8--------------------------- With removed warning Wi-Fi dongle works properly. Even though this is not the best solution it gets us a working Wireless AP. Anyways new discussion was started in linux-usb mailing list to find a proper solution instead of that hack. Signed-off-by: Alexey Brodkin --- diff --git a/target/linux/generic/patches-4.4/821-usb-Remove-annoying-warning-about-bogus-URB.patch b/target/linux/generic/patches-4.4/821-usb-Remove-annoying-warning-about-bogus-URB.patch new file mode 100644 index 0000000000..0aae481a20 --- /dev/null +++ b/target/linux/generic/patches-4.4/821-usb-Remove-annoying-warning-about-bogus-URB.patch @@ -0,0 +1,73 @@ +From f13ad28ba4280d2283ca2b49f0bd384bc51e6a68 Mon Sep 17 00:00:00 2001 +From: Alexey Brodkin +Date: Tue, 5 Jul 2016 14:28:31 +0300 +Subject: [PATCH] usb: Remove annoying warning about bogus URB + +When ath9k-htc Wi-Fi dongle is used with generic OHCI controller +infinite stream of warnings appears in debug console like this: +-------------------------->8---------------------- +usb 1-1: new full-speed USB device number 2 using ohci-platform +usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested +usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size: +51008 +------------[ cut here ]------------ +WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449 +usb_submit_urb+0x1b4/0x498() +usb 1-1: BOGUS urb xfer, pipe 1 != type 3 +Modules linked in: +CPU: 0 PID: 19 Comm: kworker/0:1 Not tainted +4.4.0-rc4-00017-g00e2d79-dirty #3 +Workqueue: events request_firmware_work_func + +Stack Trace: + arc_unwind_core.constprop.1+0xa4/0x110 +---[ end trace 649ef8c342817fc2 ]--- +------------[ cut here ]------------ +WARNING: CPU: 0 PID: 19 at drivers/usb/core/urb.c:449 +usb_submit_urb+0x1b4/0x498() +usb 1-1: BOGUS urb xfer, pipe 1 != type 3 +Modules linked in: +CPU: 0 PID: 19 Comm: kworker/0:1 Tainted: G W +4.4.0-rc4-00017-g00e2d79-dirty #3 +Workqueue: events request_firmware_work_func + +Stack Trace: + arc_unwind_core.constprop.1+0xa4/0x110 +---[ end trace 649ef8c342817fc3 ]--- +------------[ cut here ]------------ +-------------------------->8---------------------- + +There're some discussions in mailing lists proposing to disable +that particular check alltogether and magically all seem to work +fine with muted warning. + +Anyways new thread on that regard could be found here: +http://lists.infradead.org/pipermail/linux-snps-arc/2016-July/001310.html + +Let's see what comes out of that new discussion, hopefully patching +of generic USB stuff won't be required then. + +Signed-off-by: Alexey Brodkin +--- + drivers/usb/core/urb.c | 5 ----- + 1 file changed, 5 deletions(-) + +diff --git a/drivers/usb/core/urb.c b/drivers/usb/core/urb.c +index 3d27477..a317e1e 100644 +--- a/drivers/usb/core/urb.c ++++ b/drivers/usb/core/urb.c +@@ -443,11 +443,6 @@ int usb_submit_urb(struct urb *urb, gfp_t mem_flags) + * cause problems in HCDs if they get it wrong. + */ + +- /* Check that the pipe's type matches the endpoint's type */ +- if (usb_pipetype(urb->pipe) != pipetypes[xfertype]) +- dev_WARN(&dev->dev, "BOGUS urb xfer, pipe %x != type %x\n", +- usb_pipetype(urb->pipe), pipetypes[xfertype]); +- + /* Check against a simple/standard policy */ + allowed = (URB_NO_TRANSFER_DMA_MAP | URB_NO_INTERRUPT | URB_DIR_MASK | + URB_FREE_BUFFER); +-- +2.5.5 +