Openmoko Bug #2237: pcf50633 INT1 and INT3 flood logs with gadgetfs keyboard

Openmoko Public Trac bugs at docs.openmoko.org
Sat Feb 21 18:08:19 CET 2009


#2237: pcf50633 INT1 and INT3 flood logs with gadgetfs keyboard
-----------------------------+----------------------------------------------
 Reporter:  lindi            |          Owner:  openmoko-kernel
     Type:  defect           |         Status:  new            
 Priority:  normal           |      Milestone:                 
Component:  System Software  |        Version:  unspecified    
 Severity:  normal           |       Keywords:                 
 Haspatch:  0                |      Blockedby:                 
Estimated:                   |    Patchreview:                 
 Blocking:                   |   Reproducible:                 
-----------------------------+----------------------------------------------
 Steps to reproduce:
 1) connect freerunner to a PC and setup ssh access over wlan since g_ether
 can not be used during test
 2) tar zxf testcase1.tar.gz
 3) cd testcase1
 4) make
 5) sudo bash setup.sh
 6) sudo ./usb

 Expected results:
 6) freerunner shows up as a new usb keyboard on the PC side

 Actual results:
 6) freerunner shows up as a new usb keyboard on the PC side but on the
 freerunner side it starts to flood logs with about 8 lines/second:

 {{{
 Feb 21 19:02:32 ginger user.info kernel: [  288.060000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x20 INT4=0x00 INT5=0x00
 Feb 21 19:02:32 ginger user.info kernel: [  288.135000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:32 ginger user.info kernel: [  288.155000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:33 ginger user.info kernel: [  288.775000] pcf50633 0-0073:
 INT1=0x80 INT2=0x00 INT3=0x10 INT4=0x00 INT5=0x00
 Feb 21 19:02:33 ginger user.info kernel: [  288.840000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:33 ginger user.info kernel: [  288.860000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:33 ginger user.info kernel: [  288.990000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x20 INT4=0x00 INT5=0x00
 Feb 21 19:02:33 ginger user.info kernel: [  289.060000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:33 ginger user.info kernel: [  289.080000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:34 ginger user.info kernel: [  289.800000] pcf50633 0-0073:
 INT1=0x80 INT2=0x00 INT3=0x10 INT4=0x00 INT5=0x00
 Feb 21 19:02:34 ginger user.info kernel: [  289.865000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:34 ginger user.info kernel: [  289.885000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 Feb 21 19:02:34 ginger user.info kernel: [  290.105000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x20 INT4=0x00 INT5=0x00
 Feb 21 19:02:34 ginger user.info kernel: [  290.175000] pcf50633 0-0073:
 INT1=0x00 INT2=0x00 INT3=0x00 INT4=0x00 INT5=0x00
 }}}

 More info:
 1) the keyboard gadget does not yet work reliably but that is not what
 this bug report is about :-)
 2) I am using andy-tracking b8b36e5ec3db71d5
 3) udevd seems to consume 5% cpu time constantly. strace shows
 {{{
 --- SIGCHLD (Child exited) @ 0 (0) ---
 write(7, "\0"..., 1)                    = 1
 sigreturn()                             = ? (mask now [HUP QUIT ABRT BUS
 USR1 SEGV PIPE ALRM TERM CHLD CONT STOP TSTP TTOU VTALRM PROF PWR SYS])
 gettimeofday({1235235981, 461967}, NULL) = 0
 select(7, [3 4 5 6], NULL, NULL, NULL)  = 2 (in [5 6])
 recv(5, "change@/class/power_supply/adapte"..., 2560, 0) = 296
 gettimeofday({1235235981, 479707}, NULL) = 0
 unlink("/dev/.udev/failed/\\x2fclass\\x2fpower_supply\\x2fadapter") = -1
 ENOENT (No such file or directory)
 rmdir("/dev/.udev/failed")              = -1 ENOTEMPTY (Directory not
 empty)
 stat64("/dev/.udev/queue", {st_mode=S_IFDIR|0755, st_size=60, ...}) = 0
 symlink("/class/power_supply/adapter", "/dev/.udev/queue/2037") = 0
 open("/dev/.udev/uevent_seqnum", O_WRONLY|O_CREAT|O_TRUNC|O_LARGEFILE,
 0644) = 8
 write(8, "2037\n"..., 5)                = 5
 close(8)                                = 0
 read(6, "\0"..., 256)                   = 1
 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], WNOHANG, NULL) = 3020
 gettimeofday({1235235981, 549209}, NULL) = 0
 unlink("/dev/.udev/failed/\\x2fclass\\x2fpower_supply\\x2fusb") = -1
 ENOENT (No such file or directory)
 rmdir("/dev/.udev/failed")              = -1 ENOTEMPTY (Directory not
 empty)
 unlink("/dev/.udev/queue/2036")         = 0
 rmdir("/dev/.udev/queue")               = -1 ENOTEMPTY (Directory not
 empty)
 wait4(-1, 0x3ea4cf8, WNOHANG, NULL)     = -1 ECHILD (No child processes)
 open("/proc/stat", O_RDONLY|O_LARGEFILE) = 8
 fstat64(8, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0)
 = 0x40020000
 read(8, "cpu  3979 0 10751 65310 1394 0 29"..., 1024) = 386
 close(8)                                = 0
 munmap(0x40020000, 4096)                = 0
 }}}

-- 
Ticket URL: <https://docs.openmoko.org/trac/ticket/2237>
docs.openmoko.org <http://docs.openmoko.org/trac/>
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