Because of the limited debugging resources I have right now (i.e. no emulator etc..) I am debugging part of my kernel with printk's. Has anyone seen behavior such as this, or does anyone have any suggestions. I placed a some printk's in resource.c in request_resource function. I placed a routine that dumps the iomem and ioport resource trees prior to, and after a new resource gets added. Ioport resources get dumped out (and also reflect cat /proc/ioport), however - even though it appears that a new iomem resource is getting added, when I dump the iomem tree/list it appears to be empty (which also reflects car /proc/iomem). Below is a sample of the debug prints. I placed some debug code in the routine to printk the pointer variables when items are added to the list in order to check the linked list code, however - even though the debug code is simple - it causes a segfault (which I have not bothered to figure out yet). When I insmod pcmcia_core, and then insmod yenta_socket a new resource is allocated: PCI CardBus #02 start = 0x41000000 end = 0x413fffff request resource at root pci memory space start = 0x40000000 end = 0x4fffffff BEFORE added new to list: IOPORT RESOURCES: IO: 02a41000-02a41007 : ide0 (PSC: 802e2990, 85829560, 00000000) IO: 02a41206-02a41206 : ide0 (PSC: 802e2990, 8032c420, 00000000) IO: ad000000-ad003fff : ltxser (PSC: 802e2990, 86905a20, 00000000) IO: b0400000-b0400fff : frontpanel (PSC: 802e2990, 8032c3e0, 00000000) IO: b1100000-b1100007 : serial(auto) (PSC: 802e2990, 8032c3c0, 00000000) IO: b1400000-b1400007 : serial(auto) (PSC: 802e2990, 85829480, 00000000) IO: b1500000-b150ffff : Au1x00 ENET (PSC: 802e2990, 85829500, 00000000) IO: b1510000-b151ffff : Au1x00 ENET (PSC: 802e2990, 00000000, 00000000) IOMEM RESOURCES: iomem_resource name = PCI mem iomem_resource child = 0x00000000 AFTER added new to list IOPORT RESOURCES: IO: 02a41000-02a41007 : ide0 (PSC: 802e2990, 85829560, 00000000) IO: 02a41206-02a41206 : ide0 (PSC: 802e2990, 8032c420, 00000000) IO: ad000000-ad003fff : ltxser (PSC: 802e2990, 86905a20, 00000000) IO: b0400000-b0400fff : frontpanel (PSC: 802e2990, 8032c3e0, 00000000) IO: b1100000-b1100007 : serial(auto) (PSC: 802e2990, 8032c3c0, 00000000) IO: b1400000-b1400007 : serial(auto) (PSC: 802e2990, 85829480, 00000000) IO: b1500000-b150ffff : Au1x00 ENET (PSC: 802e2990, 85829500, 00000000) IO: b1510000-b151ffff : Au1x00 ENET (PSC: 802e2990, 00000000, 00000000) IOMEM RESOURCES: iomem_resource name = PCI mem iomem_resource child = 0x00000000 After the modules are inserted: -bash-2.05b# cat /proc/iomem -bash-2.05b# cat /proc/ioports 02a41000-02a41007 : ide0 02a41206-02a41206 : ide0 ad000000-ad003fff : ltxser b0400000-b0400fff : frontpanel b1100000-b1100007 : serial(auto) b1400000-b1400007 : serial(auto) b1500000-b150ffff : Au1x00 ENET b1510000-b151ffff : Au1x00 ENET -bash-2.05b# ********************************************************************** This e-mail is the property of Lantronix. It is intended only for the person or entity to which it is addressed and may contain information that is privileged, confidential, or otherwise protected from disclosure. Distribution or copying of this e-mail, or the information contained herein, to anyone other than the intended recipient is prohibited.
