Sorry if this is the wrong mailing list for this - I am writing a USB driver (for an embedded system) modeled on the drivers/usb/usb-skeleton.c version 2.6.30 but it gets the following warning. It looks like it is a generic issue, perhaps the skeleton is not maintained any more? If so is there a reference explain the right way? I couldn't find anything on google. Looking at other drivers it appears this isn't done anymore? If so perhaps this should be updated? Suggestions appreciated. Thanks Andrew ... usb 1-5: jtag_release() usb 1-5: jtag_open() usb 1-5: jtag_read(file=ded6e3c0, buf=092f8440, count=512,..) usb 1-5: jtag_flush() usb 1-5: jtag_release() usb 1-5: jtag_open() usb 1-5: jtag_write(file=df0ebe40, buf=093783f0, count=2506,..) usb 1-5: jtag_flush() usb 1-5: jtag_release() ------------[ cut here ]------------ WARNING: at /tmp/9789a690-d005-11df-8a73-00241dc62196/voyage-linux-2.6.30/arch/x86/include/asm/dma-mapping.h:294 hcd_buffer_free+0x85/0xb9 [usbcore]() Hardware name: POULSBO Modules linked in: ctam_ftdi ipv6 tun e1000e ata_piix usb_storage ff_memless intel_agp agpgart loop hwmon_vid hostap_pci hostap lib80211 natsemi serio_raw p cspkr asix pl2303 usbnet ftdi_sio usbserial usbhid i2c_isch hid evdev ext3 jbd mbcache sd_mod pata_sch ata_generic libata uhci_hcd ehci_hcd scsi_mod ide_pci _generic r8169 mii usbcore amd74xx lm90 led_class ide_generic ide_core [last unloaded: ctam_ftdi] Pid: 2234, comm: loadFPGA Tainted: G W 2.6.30.10-robin-z5xx #1 Call Trace: [<c0126a04>] ? warn_slowpath_common+0x5e/0x8a [<c0126a3a>] ? warn_slowpath_null+0xa/0xc [<dff512d1>] ? hcd_buffer_free+0x85/0xb9 [usbcore] [<e043b328>] ? jtag_write_bulk_callback+0x55/0x61 [ctam_ftdi] [<dff4c1e2>] ? usb_hcd_giveback_urb+0x60/0x8f [usbcore] [<dfffde94>] ? ehci_urb_done+0x9d/0xa9 [ehci_hcd] [<dffff42d>] ? qh_completions+0x359/0x3e9 [ehci_hcd] [<dffff552>] ? ehci_work+0x95/0x782 [ehci_hcd] [<e016f5c1>] ? serial_write+0x72/0x7d [usbserial] [<c0175aa5>] ? handle_mm_fault+0x293/0x5f4 [<e00024f9>] ? ehci_irq+0x171/0x1c4 [ehci_hcd] [<dff4beca>] ? usb_hcd_irq+0x2f/0x6c [usbcore] [<c0156287>] ? handle_IRQ_event+0x4e/0x101 [<c0157510>] ? handle_fasteoi_irq+0x66/0x97 [<c0104def>] ? handle_irq+0x17/0x1b [<c010485d>] ? do_IRQ+0x38/0x76 [<c0103569>] ? common_interrupt+0x29/0x30 ---[ end trace 7b48bc9372419b94 ]--- usb 1-5: jtag_open() usb 1-5: jtag_flush() usb 1-5: jtag_read(file=de7748c0, buf=09a63000, count=512,..) usb 1-5: jtag_flush() usb 1-5: jtag_release() -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
