On Mon, Feb 08, 2016 at 08:44:19PM +0200, Felipe Balbi wrote:
>
> Hi,
>
> Vishal Thanki <vishalthanki@xxxxxxxxx> writes:
> > It is vanilla kernel v4.0, except for some ASoC patches and v5 of Dave's PM
> > series from kernel v3.19-rc5 rebased to it.
>
> Care to try *real* vanilla v4.4 instead ? v4.5-rc3 would be even
> better. Take *no* extra patches.
>
I tried on v4.4. I have to take the patches from Dave so that PM can work
on am33xx platform. The patches are taken from here, and rebased to v4.4
vanilla kernel.
https://github.com/dgerlach/linux-pm/commits/pm-v4.3-rc1-amx3-suspend
> > If a USB storage device is plugged in before suspend and keep is plugged in
> > during resume, the resume is taking ~15+ seconds. I noticed that it fails while
> > sending USB control messages in hub_port_init():
> >
> > http://lxr.free-electrons.com/source/drivers/usb/core/hub.c#L4390
> >
> > After the failure, the USB device is logically disconnected and rediscovered
> > again. So I can see the device mounted once the system is resumed, but it
> > takes more time during resume.
> >
> > I observed that during system resume, there is a CONNECT interrupt received
> > by MUSB controller:
> >
> > http://lxr.free-electrons.com/source/drivers/usb/musb/musb_core.c#L772
> >
> > If the hub_port_init() is started before the CONNECT interrupt is
> > served, I am hitting the issue. Almost every time the CONNECT
> > interrupt is occurring ~150ms after musb_start() is invoked from
> > musb_resume(). If I add a wait of ~200ms in musb_resume() just to make
> > sure that CONNECT interrupt is received, I never hit the issue.
>
> interesting, sounds like a bug in the ordering of calls in
> musb_resume(). Can you see if you're falling in either of these branches
> on the failing case ?
>
> mask = MUSB_DEVCTL_BDEVICE | MUSB_DEVCTL_FSDEV | MUSB_DEVCTL_LSDEV;
> if ((devctl & mask) != (musb->context.devctl & mask))
> musb->port1_status = 0;
> if (musb->need_finish_resume) {
> musb->need_finish_resume = 0;
> schedule_delayed_work(&musb->finish_resume_work,
> msecs_to_jiffies(USB_RESUME_TIMEOUT));
> }
>
> Any differences in this regard on the working case?
In both, working and non-working case, the execution is not entering into any
of the "if" blocks. I have made sure that by putting prints as can be
seen in the attached patch.
>
> > I see that hub_port_init() is calling hub_port_reset before actually
> > sending the USB
> > control messages. The hub_port_reset() internally sets the RESET bit
> > in MUSB POWER
> > register, but I am not sure if that is a valid operation before
> > getting the CONNECT interrupt.
>
> hub_port_reset(), IMO, shouldn't run before it knows there are devices
> connected to the bus...
>
Hmm, I have attached the logs for kernel v4.4 for working and
non-working case. I noticed that the CONNECT interrupt now comes a
little late (not within ~200 ms). However in working case, it always
occurs before the hub_port_reset().
> --
> balbi
diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c
index ee9ff70..2095727 100644
--- a/drivers/usb/musb/musb_core.c
+++ b/drivers/usb/musb/musb_core.c
@@ -2503,13 +2503,17 @@ static int musb_resume(struct device *dev)
* unconditionally.
*/
+ dev_dbg(dev, "** Enter %s **\n", __func__);
musb_restore_context(musb);
devctl = musb_readb(musb->mregs, MUSB_DEVCTL);
mask = MUSB_DEVCTL_BDEVICE | MUSB_DEVCTL_FSDEV | MUSB_DEVCTL_LSDEV;
- if ((devctl & mask) != (musb->context.devctl & mask))
+ if ((devctl & mask) != (musb->context.devctl & mask)) {
musb->port1_status = 0;
+ dev_dbg(dev, "** cond 1 **\n");
+ }
if (musb->need_finish_resume) {
+ dev_dbg(dev, "** cond 2 **\n");
musb->need_finish_resume = 0;
schedule_delayed_work(&musb->finish_resume_work,
msecs_to_jiffies(USB_RESUME_TIMEOUT));
@@ -2524,7 +2528,9 @@ static int musb_resume(struct device *dev)
pm_runtime_enable(dev);
musb_start(musb);
-
+ dev_dbg(dev, "** Entering 200 ms sleep **\n", __func__);
+ msleep(200);
+ dev_dbg(dev, "** Exit %s **\n", __func__);
return 0;
}
[ 37.652989] PM: Syncing filesystems ... done.
[ 37.664416] PM: Preparing system for sleep (mem)
[ 37.697492] Freezing user space processes ... (elapsed 0.003 seconds) done.
[ 37.710139] Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done.
[ 37.721069] PM: Suspending system (mem)
[ 37.728132] mwifiex_sdio mmc0:0001:1: None of the WOWLAN triggers enabled
[ 37.736542] usb 1-1: usb suspend, wakeup 0
[ 37.743952] hub 1-0:1.0: hub_suspend
[ 37.747118] musb-hdrc musb-hdrc.0.auto: Root port suspended, power f2
[ 37.761982] PM: suspend of devices complete after 35.862 msecs
[ 37.775693] PM: late suspend of devices complete after 7.522 msecs
[ 37.791111] PM: noirq suspend of devices complete after 8.782 msecs
[ 37.797716] PM: Successfully put all powerdomains to target state
[ 37.823260] PM: noirq resume of devices complete after 24.185 msecs
[ 37.840683] PM: early resume of devices complete after 6.717 msecs
[ 37.850534] net eth0: initializing cpsw version 1.12 (0)
[ 37.929030] net eth0: phy found : id is : 0x4dd076
[ 37.934230] libphy: PHY 4a101000.mdio:05 not found
[ 37.939561] net eth0: phy 4a101000.mdio:05 not found on slave 1
[ 37.954109] musb-hdrc musb-hdrc.0.auto: ** Enter musb_resume **
[ 37.954187] musb-hdrc musb-hdrc.0.auto: <== devctl 98
[ 37.954212] musb-hdrc musb-hdrc.0.auto: ** Entering 200 ms sleep **
[ 38.158472] musb-hdrc musb-hdrc.0.auto: ** Exit musb_resume **
[ 38.158567] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 38.170487] hub 1-0:1.0: hub_resume
[ 38.170734] musb-hdrc musb-hdrc.0.auto: port status 00120507
[ 38.171665] usb usb1-port1: status 0507 change 0012
[ 38.171739] musb-hdrc musb-hdrc.0.auto: clear feature 17
[ 38.171851] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 38.213924] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0010 tx0000 rx0000
[ 38.213946] musb-hdrc musb-hdrc.0.auto: <== DevCtl=5d, int_usb=0x10
[ 38.214766] musb-hdrc musb-hdrc.0.auto: CONNECT (a_host) devctl 5d
[ 38.279577] musb-hdrc musb-hdrc.0.auto: port status 00010105
[ 38.280371] musb-hdrc musb-hdrc.0.auto: clear feature 2
[ 38.280925] usb 1-1: usb resume
[ 38.328505] musb-hdrc musb-hdrc.0.auto: port status 00010101
[ 38.348479] musb-hdrc musb-hdrc.0.auto: clear feature 16
[ 38.348563] usb 1-1: finish reset-resume
[ 38.348762] musb-hdrc musb-hdrc.0.auto: set feature 4
[ 38.398521] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 38.398549] musb-hdrc musb-hdrc.0.auto: high-speed device connected
[ 38.408568] musb-hdrc musb-hdrc.0.auto: port status 00120503
[ 38.409299] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 38.468518] usb 1-1: reset high-speed USB device number 2 using musb-hdrc
[ 38.475735] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce0b2e80
[ 38.475772] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.490235] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.490257] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 18 buf ce0b2c00
[ 38.490300] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.490421] musb-hdrc musb-hdrc.0.auto: set feature 4
[ 38.538489] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 38.538509] musb-hdrc musb-hdrc.0.auto: high-speed device connected
[ 38.548474] musb-hdrc musb-hdrc.0.auto: port status 00120503
[ 38.548578] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 38.608485] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce0b2c00
[ 38.608516] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.623667] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.638487] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce0b2e80
[ 38.638519] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.638825] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.638845] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 18 buf ce0b2c00
[ 38.638885] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.639026] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce0b2e80
[ 38.639058] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.639404] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.639424] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 32 buf ce0b2c00
[ 38.639464] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.639565] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce0b2e80
[ 38.639596] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.639945] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.639965] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 34 buf ce054800
[ 38.640005] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.640143] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce0b2c00
[ 38.640171] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.640222] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.640351] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce0b2e80
[ 38.640381] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.640449] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.640469] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 2 buf ce0b2c00
[ 38.640506] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 38.642193] PM: resume of devices complete after 794.968 msecs
[ 38.654023] PM: Finishing wakeup.
[ 38.654085] Restarting tasks ...
[ 38.659927] hub 1-0:1.0: state 7 ports 1 chg 0002 evt 0002
[ 38.660250] musb-hdrc musb-hdrc.0.auto: port status 00020503
[ 38.660422] musb-hdrc musb-hdrc.0.auto: clear feature 17
[ 38.660534] usb usb1-port1: status 0503, change 0002, 480 Mb/s
[ 38.669777] done.
[ 42.969550] cpsw 4a100000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[ 30.895212] PM: Syncing filesystems ... done.
[ 30.906374] PM: Preparing system for sleep (mem)
[ 30.937089] Freezing user space processes ... (elapsed 0.003 seconds) done.
[ 30.949767] Freezing remaining freezable tasks ... (elapsed 0.003 seconds) done.
[ 30.960686] PM: Suspending system (mem)
[ 30.967738] mwifiex_sdio mmc0:0001:1: None of the WOWLAN triggers enabled
[ 30.976161] usb 1-1: usb suspend, wakeup 0
[ 30.982876] hub 1-0:1.0: hub_suspend
[ 30.986036] musb-hdrc musb-hdrc.0.auto: Root port suspended, power f2
[ 31.000079] PM: suspend of devices complete after 34.357 msecs
[ 31.013868] PM: late suspend of devices complete after 7.600 msecs
[ 31.029261] PM: noirq suspend of devices complete after 8.766 msecs
[ 31.035972] PM: Successfully put all powerdomains to target state
[ 31.062356] PM: noirq resume of devices complete after 25.146 msecs
[ 31.079929] PM: early resume of devices complete after 6.806 msecs
[ 31.089701] net eth0: initializing cpsw version 1.12 (0)
[ 31.168977] net eth0: phy found : id is : 0x4dd076
[ 31.174193] libphy: PHY 4a101000.mdio:05 not found
[ 31.179282] net eth0: phy 4a101000.mdio:05 not found on slave 1
[ 31.193804] musb-hdrc musb-hdrc.0.auto: ** Enter musb_resume **
[ 31.193880] musb-hdrc musb-hdrc.0.auto: <== devctl 98
[ 31.193904] musb-hdrc musb-hdrc.0.auto: ** Exit musb_resume **
[ 31.194026] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 31.194046] musb-hdrc musb-hdrc.0.auto: high-speed device connected
[ 31.205853] hub 1-0:1.0: hub_resume
[ 31.206105] musb-hdrc musb-hdrc.0.auto: port status 00120507
[ 31.207030] usb usb1-port1: status 0507 change 0012
[ 31.207100] musb-hdrc musb-hdrc.0.auto: clear feature 17
[ 31.207210] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 31.309957] musb-hdrc musb-hdrc.0.auto: port status 00000507
[ 31.310824] musb-hdrc musb-hdrc.0.auto: clear feature 2
[ 31.311377] usb 1-1: usb resume
[ 31.358432] musb-hdrc musb-hdrc.0.auto: port status 00000503
[ 31.378399] usb 1-1: finish resume
[ 31.378441] usb 1-1: retry with reset-resume
[ 31.378637] musb-hdrc musb-hdrc.0.auto: set feature 4
[ 31.428451] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 31.438493] musb-hdrc musb-hdrc.0.auto: port status 00120503
[ 31.439233] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 31.453593] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0010 tx0000 rx0000
[ 31.453616] musb-hdrc musb-hdrc.0.auto: <== DevCtl=5d, int_usb=0x10
[ 31.453772] musb-hdrc musb-hdrc.0.auto: CONNECT (a_host) devctl 5d
[ 31.498460] usb 1-1: reset high-speed USB device number 2 using musb-hdrc
[ 31.505691] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf5fed40
[ 36.209411] cpsw 4a100000.ethernet eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[ 36.499510] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce1078c0
[ 41.498604] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf ce1078c0
[ 46.498566] musb-hdrc musb-hdrc.0.auto: set feature 4
[ 46.548416] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 46.548436] musb-hdrc musb-hdrc.0.auto: high-speed device connected
[ 46.558407] musb-hdrc musb-hdrc.0.auto: port status 00130503
[ 46.558560] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 46.558771] musb-hdrc musb-hdrc.0.auto: clear feature 1
[ 46.559684] usb usb1-port1: logical disconnect
[ 46.559740] musb-hdrc musb-hdrc.0.auto: clear feature 1
[ 46.559834] usb 1-1: gone after usb resume? status -19
[ 46.559853] usb 1-1: can't resume, status -19
[ 46.559866] usb usb1-port1: logical disconnect
[ 46.559894] musb-hdrc musb-hdrc.0.auto: clear feature 1
[ 46.561463] PM: resume of devices complete after 15474.992 msecs
[ 46.573417] PM: Finishing wakeup.
[ 46.573473] Restarting tasks ...
[ 46.580731] hub 1-0:1.0: state 7 ports 1 chg 0002 evt 0002
[ 46.581071] musb-hdrc musb-hdrc.0.auto: port status 00030501
[ 46.581284] musb-hdrc musb-hdrc.0.auto: clear feature 16
[ 46.581386] musb-hdrc musb-hdrc.0.auto: clear feature 17
[ 46.581467] usb usb1-port1: status 0501, change 0003, 480 Mb/s
[ 46.581498] usb 1-1: USB disconnect, device number 2
[ 46.586719] usb 1-1: unregistering device
[ 46.602403] done.
[ 46.841305] musb-hdrc musb-hdrc.0.auto: port status 00000501
[ 46.842627] udevd[250]: inotify_add_watch(5, /dev/sda, 10) failed: No such file or directory
[ 46.878462] musb-hdrc musb-hdrc.0.auto: port status 00000501
[ 46.918465] musb-hdrc musb-hdrc.0.auto: port status 00000501
[ 46.958432] musb-hdrc musb-hdrc.0.auto: port status 00000501
[ 46.998420] musb-hdrc musb-hdrc.0.auto: port status 00000501
[ 46.998527] usb usb1-port1: debounce total 100ms stable 100ms status 0x501
[ 46.998644] musb-hdrc musb-hdrc.0.auto: set feature 4
[ 47.048440] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 47.048464] musb-hdrc musb-hdrc.0.auto: high-speed device connected
[ 47.058424] musb-hdrc musb-hdrc.0.auto: port status 00120503
[ 47.059015] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 47.118422] usb 1-1: new high-speed USB device number 3 using musb-hdrc
[ 47.125426] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598bc0
[ 47.125466] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.132051] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.132078] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 18 buf cf598680
[ 47.132130] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.132251] musb-hdrc musb-hdrc.0.auto: set feature 4
[ 47.178433] musb-hdrc musb-hdrc.0.auto: root port reset stopped
[ 47.178454] musb-hdrc musb-hdrc.0.auto: high-speed device connected
[ 47.188739] musb-hdrc musb-hdrc.0.auto: port status 00120503
[ 47.188849] musb-hdrc musb-hdrc.0.auto: clear feature 20
[ 47.248433] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598680
[ 47.248470] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.265454] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.278428] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598bc0
[ 47.278461] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.278767] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.278790] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 18 buf cf598680
[ 47.278825] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.278967] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598d40
[ 47.278996] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.279280] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.279300] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 9 buf cf598bc0
[ 47.279334] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.279417] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598d00
[ 47.279447] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.279792] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.279811] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 32 buf cf598d40
[ 47.279847] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.279949] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598bc0
[ 47.279980] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.280247] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.280267] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 4 buf cf6d1a00
[ 47.280301] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.280382] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598bc0
[ 47.280409] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.280727] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.280747] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 22 buf cf6d1a00
[ 47.280782] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.280869] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf5988c0
[ 47.280898] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.281193] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.281213] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 8 buf cf6d1a00
[ 47.281246] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.281330] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598fc0
[ 47.281359] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.281708] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.281727] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 34 buf cf6d1a00
[ 47.281763] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.281836] usb 1-1: udev 3, busnum 1, minor = 2
[ 47.281856] usb 1-1: New USB device found, idVendor=090c, idProduct=1000
[ 47.292749] usb 1-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 47.300307] usb 1-1: Product: Flash Disk
[ 47.304430] usb 1-1: Manufacturer: USB
[ 47.308805] usb 1-1: SerialNumber: FBF1101121103636
[ 47.316426] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf598a00
[ 47.316484] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.316569] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 47.318088] usb-storage 1-1:1.0: USB Mass Storage device detected
[ 47.326577] scsi host1: usb-storage 1-1:1.0
[ 47.342826] hub 1-0:1.0: state 7 ports 1 chg 0000 evt 0002
[ 47.342936] musb-hdrc musb-hdrc.0.auto: port status 00020503
[ 47.343082] usb usb1-port1: enable change, status 00000503
[ 47.343118] musb-hdrc musb-hdrc.0.auto: clear feature 17
[ 48.328504] musb-hdrc musb-hdrc.0.auto: TX ep0 fifo d098c420 count 8 buf cf580c00
[ 48.328578] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 48.328648] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 48.328671] musb-hdrc musb-hdrc.0.auto: RX ep0 fifo d098c420 count 1 buf d0990000
[ 48.328707] musb-hdrc musb-hdrc.0.auto: ** IRQ host usb0000 tx0001 rx0000
[ 48.661838] scsi 1:0:0:0: Direct-Access USB Flash Disk 1100 PQ: 0 ANSI: 0 CCS
[ 48.693141] sd 1:0:0:0: [sda] 3915776 512-byte logical blocks: (2.00 GB/1.86 GiB)
[ 48.716779] sd 1:0:0:0: [sda] Write Protect is off
[ 48.722028] sd 1:0:0:0: [sda] Mode Sense: 43 00 00 00
[ 48.723147] sd 1:0:0:0: [sda] No Caching mode page found
[ 48.729620] sd 1:0:0:0: [sda] Assuming drive cache: write through
[ 48.749317] sda: sda1
[ 48.773211] sd 1:0:0:0: [sda] Attached SCSI removable disk
