Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=78e1ca49c7ead5cd00882ed0c776260857613122
Commit:     78e1ca49c7ead5cd00882ed0c776260857613122
Parent:     853298bc03ef65e3eb392f5d61265605214ee8fb
Author:     Zhao Yakui <[EMAIL PROTECTED]>
AuthorDate: Thu Sep 20 21:23:13 2007 -0400
Committer:  Len Brown <[EMAIL PROTECTED]>
CommitDate: Tue Sep 25 17:59:00 2007 -0400

    ACPI: hpet: ACPI Error (utglobal-0126): Unknown exception code: 0xFFFFFFF0
    
    If hpet has been initialized before registering hpet driver, the callback
    function of hpet_resources will return the status code of -EBUSY, which is
    not defined in the ACPI exception table.  So when ACPI checks the status
    code of callback function, it will report the unknown exception code.
    
    So the status code in ACPI is used instead of the generic error code in the
    ACPI callback function of hpet_resources.
    For example: -EBUSY is replaced by AE_ALREADY_EXISTS
             -EINVAL is replaced by AE_NO_MEMORY
    
    http://bugzilla.kernel.org/show_bug.cgi?id=8630
    
    Signed-off-by: Zhao Yakui  <[EMAIL PROTECTED]>
    Signed-off-by: Len Brown <[EMAIL PROTECTED]>
---
 drivers/char/hpet.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index 7ecffc9..fd51554 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -943,14 +943,14 @@ static acpi_status hpet_resources(struct acpi_resource 
*res, void *data)
                        printk(KERN_DEBUG "%s: 0x%lx is busy\n",
                                __FUNCTION__, hdp->hd_phys_address);
                        iounmap(hdp->hd_address);
-                       return -EBUSY;
+                       return AE_ALREADY_EXISTS;
                }
        } else if (res->type == ACPI_RESOURCE_TYPE_FIXED_MEMORY32) {
                struct acpi_resource_fixed_memory32 *fixmem32;
 
                fixmem32 = &res->data.fixed_memory32;
                if (!fixmem32)
-                       return -EINVAL;
+                       return AE_NO_MEMORY;
 
                hdp->hd_phys_address = fixmem32->address;
                hdp->hd_address = ioremap(fixmem32->address,
@@ -960,7 +960,7 @@ static acpi_status hpet_resources(struct acpi_resource 
*res, void *data)
                        printk(KERN_DEBUG "%s: 0x%lx is busy\n",
                                __FUNCTION__, hdp->hd_phys_address);
                        iounmap(hdp->hd_address);
-                       return -EBUSY;
+                       return AE_ALREADY_EXISTS;
                }
        } else if (res->type == ACPI_RESOURCE_TYPE_EXTENDED_IRQ) {
                struct acpi_resource_extended_irq *irqp;
-
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