Am Montag, 7. Januar 2008 schrieb David Brownell:
>
> Here's a better way, on top of $SUBJECT patch.
> Saves another four bytes too. ;)
Doesn't work:
I patched -rc7 with
[patch 2.6.24-rc6] usb: ehci saves some memory in ISO transfer descriptors
+ both $SUBJECT patches.
Tested with snd-usb-caiaq on ICH8M. Hangs on rmmod of snd-usb-caiaq or
ehci-hcd.
It looks like at least iso in urbs don't complete.
SysRq : Show Blocked State
task PC stack pid father
khubd D f0c0ece4 0 165 2
f79b7e38 00000046 f0c0ec00 f0c0ece4 019b7e64 00000202 432dc02f 00000190
f7878c30 f7878d88 c200b9c0 00000001 f6d37c80 00000002 f7888480 f6e7579c
f7888480 f79b7e38 00000001 00000000 00000202 f79b7e38 c0233f49 00000202
Call Trace:
[<c0355e27>] usb_kill_urb+0x92/0xbe
[<c0355d2f>] usb_hcd_flush_endpoint+0x155/0x176
[<c0356594>] usb_disable_endpoint+0x4e/0x5b
[<c0356611>] usb_disable_device+0x70/0x145
[<c0351f91>] usb_disconnect+0xbf/0x151
[<c0353676>] hub_thread+0x618/0xee5
[<c0233d0a>] kthread+0x3b/0x61
[<c0205b87>] kernel_thread_helper+0x7/0x10
=======================
rmmod D c0504787 0 6338 4481
ee8ede44 00200082 00000012 c0504787 ee8ede6c 00200246 8d6215d9 00000191
f70bae30 f70baf88 c200b9c0 00000001 f6ed5740 00000000 00000104 00000000
00000000 00200246 00004d11 00000000 1eaab5cb 363c0000 20205b3e 2e303632
Call Trace:
[<c03f099b>] __down+0xc2/0xd6
[<c03f073a>] __down_failed+0xa/0x10
[<c0351f42>] usb_disconnect+0x70/0x151
[<c0354394>] usb_remove_hcd+0xb8/0x10d
[<c035ee18>] usb_hcd_pci_remove+0x1d/0x9a
[<c02ebe59>] pci_device_remove+0x19/0x39
[<c034ab0b>] __device_release_driver+0x71/0x8d
[<c034af48>] driver_detach+0x7b/0xbb
[<c034a6f5>] bus_remove_driver+0x66/0x82
[<c034afad>] driver_unregister+0x8/0xa
[<c02ebf01>] pci_unregister_driver+0x16/0x5f
[<f88631d0>] ehci_hcd_cleanup+0xd/0xf [ehci_hcd]
[<c02423ca>] sys_delete_module+0x15f/0x185
[<c0204fce>] syscall_call+0x7/0xb
=======================
Karsten
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