MTD_CK804XROM warning (Was: Linux 2.6.29-rc6)
- From: Marcin Slusarz <marcin.slusarz@xxxxxxxxx>
- Date: Thu, 26 Feb 2009 18:17:26 +0100
On Thu, Feb 26, 2009 at 12:15:52PM +0100, Jesper Krogh wrote:
Booting up 2.6.29-rc6 gave me this one in dmesg...
[ 21.136149] ck804xrom ck804xrom_init_one(): Unable to register resource
0x00000000ff000000-0x00000000ffffffff - kernel bug?
[ 21.136258] resource map sanity check conflict: 0xff000000 0xffffffff
0xff700000 0xffffffff reserved
[ 21.136267] ------------[ cut here ]------------
[ 21.136269] WARNING: at arch/x86/mm/ioremap.c:208
__ioremap_caller+0x359/0x390()
[ 21.136271] Hardware name: Sun Fire X2200 M2 with Quad Core Processor
[ 21.136273] Info: mapping multiple BARs. Your kernel is fine.Modules
linked in: ck804xrom(+) mtd chipreg pcspkr(+) shpchp button pci_hotplug
i2c_nforce2 i2c_core map_funcs evdev ext3 jbd mbcache sg sd_mod usbhid hid
amd74xx sata_nv tg3 ata_generic libphy ehci_hcd libata ohci_hcd forcedeth
scsi_mod usbcore thermal processor fan thermal_sys fuse
[ 21.136289] Pid: 3843, comm: modprobe Not tainted 2.6.29-rc6 #2
[ 21.136291] Call Trace:
[ 21.136298] [<ffffffff8023d352>] warn_slowpath+0xf2/0x130
[ 21.136301] [<ffffffff8023d62a>] __call_console_drivers+0x6a/0x90
[ 21.136304] [<ffffffff8023e1fe>] printk+0x4e/0x60
[ 21.136306] [<ffffffff8023e1fe>] printk+0x4e/0x60
[ 21.136309] [<ffffffff8036b520>] match_pci_dev_by_id+0x0/0x60
[ 21.136313] [<ffffffff8024360e>] iomem_map_sanity_check+0xbe/0xd0
[ 21.136316] [<ffffffff80229799>] __ioremap_caller+0x359/0x390
[ 21.136320] [<ffffffffa01eb1f6>] init_ck804xrom+0x1f6/0x62c [ck804xrom]
[ 21.136322] [<ffffffffa01eb1f6>] init_ck804xrom+0x1f6/0x62c [ck804xrom]
[ 21.136326] [<ffffffff80275eac>]
tracepoint_update_probe_range+0x1c/0xb0
[ 21.136329] [<ffffffffa01eb000>] init_ck804xrom+0x0/0x62c [ck804xrom]
[ 21.136332] [<ffffffff8020903b>] _stext+0x3b/0x160
[ 21.136335] [<ffffffff80359141>] __up_read+0x21/0xb0
[ 21.136340] [<ffffffff80256495>]
__blocking_notifier_call_chain+0x65/0x90
[ 21.136343] [<ffffffff80265604>] sys_init_module+0xb4/0x200
[ 21.136346] [<ffffffff8020c35b>] system_call_fastpath+0x16/0x1b
[ 21.136348] ---[ end trace f807e12658961c2d ]---
System is fully operational, but I didnt get it in 2.6.26.8 (most recent
kernel tried on this hardware).
This message comes from this code in drivers/mtd/maps/ck804xrom.c:
/*
* Try to reserve the window mem region. If this fails then
* it is likely due to a fragment of the window being
* "reserved" by the BIOS. In the case that the
* request_mem_region() fails then once the rom size is
* discovered we will try to reserve the unreserved fragment.
*/
window->rsrc.name = MOD_NAME;
window->rsrc.start = window->phys;
window->rsrc.end = window->phys + window->size - 1;
window->rsrc.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
if (request_resource(&iomem_resource, &window->rsrc)) {
window->rsrc.parent = NULL;
printk(KERN_ERR MOD_NAME
" %s(): Unable to register resource"
" 0x%.016llx-0x%.016llx - kernel bug?\n",
__func__,
(unsigned long long)window->rsrc.start,
(unsigned long long)window->rsrc.end);
}
So it's probably harmless.
Adding CC's.
Marcin
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