From 325a8d36035f0623950e38e9cf7a47a48e72df11 Mon Sep 17 00:00:00 2001 From: Thomas Renninger Date: Mon, 1 Oct 2012 00:23:56 +0200 Subject: [PATCH] ACPI: Create acpi_table_taint() function to avoid code duplication There are two ways of overriding ACPI tables now, both need to taint the the kernel. Signed-off-by: Thomas Renninger Link: http://lkml.kernel.org/r/1349043837-22659-6-git-send-email-trenn@suse.de Cc: Len Brown Cc: Robert Moore Cc: Yinghai Lu Cc: Eric Piel Signed-off-by: H. Peter Anvin --- drivers/acpi/osl.c | 20 +++++++++++++------- 1 file changed, 13 insertions(+), 7 deletions(-) diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 007224bd4db7..a2845fff3997 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -656,6 +656,15 @@ void __init acpi_initrd_override(void *data, size_t size) } #endif /* CONFIG_ACPI_INITRD_TABLE_OVERRIDE */ +static void acpi_table_taint(struct acpi_table_header *table) +{ + pr_warn(PREFIX + "Override [%4.4s-%8.8s], this is unsafe: tainting kernel\n", + table->signature, table->oem_table_id); + add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); +} + + acpi_status acpi_os_table_override(struct acpi_table_header * existing_table, struct acpi_table_header ** new_table) @@ -669,13 +678,8 @@ acpi_os_table_override(struct acpi_table_header * existing_table, if (strncmp(existing_table->signature, "DSDT", 4) == 0) *new_table = (struct acpi_table_header *)AmlCode; #endif - if (*new_table != NULL) { - printk(KERN_WARNING PREFIX "Override [%4.4s-%8.8s], " - "this is unsafe: tainting kernel\n", - existing_table->signature, - existing_table->oem_table_id); - add_taint(TAINT_OVERRIDDEN_ACPI_TABLE); - } + if (*new_table != NULL) + acpi_table_taint(existing_table); return AE_OK; } @@ -736,6 +740,8 @@ acpi_os_physical_table_override(struct acpi_table_header *existing_table, break; } while (table_offset + ACPI_HEADER_SIZE < all_tables_size); + if (*address != 0) + acpi_table_taint(existing_table); return AE_OK; #endif }