Showing error 1238

User: Jiri Slaby
Error type: Leaving function in locked state
Error type description: Some lock is not unlocked on all paths of a function, so it is leaked
File location: drivers/acpi/processor_idle.c
Line in file: 224
Project: Linux Kernel
Project version: 2.6.28
Tools: Stanse (1.2)
Entered: 2012-05-21 20:30:05 UTC

Source: 

 194                return ((0xFFFFFFFF - t1) + t2);
 195}
 196
 197static inline u32 ticks_elapsed_in_us(u32 t1, u32 t2)
 198{
 199        if (t2 >= t1)
 200                return PM_TIMER_TICKS_TO_US(t2 - t1);
 201        else if (!(acpi_gbl_FADT.flags & ACPI_FADT_32BIT_TIMER))
 202                return PM_TIMER_TICKS_TO_US(((0x00FFFFFF - t1) + t2) & 0x00FFFFFF);
 203        else
 204                return PM_TIMER_TICKS_TO_US((0xFFFFFFFF - t1) + t2);
 205}
 206
 207/*
 208 * Callers should disable interrupts before the call and enable
 209 * interrupts after return.
 210 */
 211static void acpi_safe_halt(void)
 212{
 213        current_thread_info()->status &= ~TS_POLLING;
 214        /*
 215         * TS_POLLING-cleared state must be visible before we
 216         * test NEED_RESCHED:
 217         */
 218        smp_mb();
 219        if (!need_resched()) {
 220                safe_halt();
 221                local_irq_disable();
 222        }
 223        current_thread_info()->status |= TS_POLLING;
 224}
 225
 226#ifndef CONFIG_CPU_IDLE
 227
 228static void
 229acpi_processor_power_activate(struct acpi_processor *pr,
 230                              struct acpi_processor_cx *new)
 231{
 232        struct acpi_processor_cx *old;
 233
 234        if (!pr || !new)
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