ACPI / table: remove duplicate NULL check for the handler of acpi_table_parse()

In acpi_table_parse(), pointer of the table to pass to handler() is
checked before handler() called, so remove all the duplicate NULL
check in the handler function.

CC: Tony Luck <tony.luck@intel.com>
CC: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

1 files changed, 2 insertions, 14 deletions

diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index b9e30daa0881..14d3652ece8d 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -843,13 +843,7 @@ int acpi_ioapic_registered(acpi_handle handle, u32 gsi_base)
 
 static int __init acpi_parse_sbf(struct acpi_table_header *table)
 {
-        struct acpi_table_boot *sb;
-
-        sb = (struct acpi_table_boot *)table;
-        if (!sb) {
-                printk(KERN_WARNING PREFIX "Unable to map SBF\n");
-                return -ENODEV;
-        }
+        struct acpi_table_boot *sb = (struct acpi_table_boot *)table;
 
         sbf_port = sb->cmos_index;      /* Save CMOS port */
 
@@ -863,13 +857,7 @@ static struct resource *hpet_res __initdata;
 
 static int __init acpi_parse_hpet(struct acpi_table_header *table)
 {
-        struct acpi_table_hpet *hpet_tbl;
-
-        hpet_tbl = (struct acpi_table_hpet *)table;
-        if (!hpet_tbl) {
-                printk(KERN_WARNING PREFIX "Unable to map HPET\n");
-                return -ENODEV;
-        }
+        struct acpi_table_hpet *hpet_tbl = (struct acpi_table_hpet *)table;
 
         if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) {
                 printk(KERN_WARNING PREFIX "HPET timers must be located in "