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pci, x86, acpi: fix early_ioremap() leak 

Pawel reported:
------------[ cut here ]------------
WARNING: at arch/x86/mm/ioremap.c:616 check_early_ioremap_leak+0x52/0x67()
Hardware name:
Debug warning: early ioremap leak of 1 areas detected.
Modules linked in:
Pid: 1, comm: swapper Not tainted 2.6.29-rc4-tip #2
...

Reported-by: Pawel Dziekonski <dzieko@gmail.com>
Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Yinghai Lu 2009-02-11 01:06:59 -08:00 committed by Ingo Molnar
parent b825e6cc7b
commit 8e1568f350
1 changed files with 5 additions and 2 deletions
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7
drivers/pci/dmar.c
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@ -42,6 +42,7 @@
LIST_HEAD(dmar_drhd_units);
static struct acpi_table_header * __initdata dmar_tbl;
static acpi_size dmar_tbl_size;
static void __init dmar_register_drhd_unit(struct dmar_drhd_unit *drhd)
{
@ -288,8 +289,9 @@ static int __init dmar_table_detect(void)
acpi_status status = AE_OK;
/* if we could find DMAR table, then there are DMAR devices */
status = acpi_get_table(ACPI_SIG_DMAR, 0,
(struct acpi_table_header **)&dmar_tbl);
status = acpi_get_table_with_size(ACPI_SIG_DMAR, 0,
(struct acpi_table_header **)&dmar_tbl,
&dmar_tbl_size);
if (ACPI_SUCCESS(status) && !dmar_tbl) {
printk (KERN_WARNING PREFIX "Unable to map DMAR\n");
@ -481,6 +483,7 @@ void __init detect_intel_iommu(void)
iommu_detected = 1;
#endif
}
early_acpi_os_unmap_memory(dmar_tbl, dmar_tbl_size);
dmar_tbl = NULL;
}