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path: root/drivers/char/random.c
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Diffstat (limited to 'drivers/char/random.c')
-rw-r--r--drivers/char/random.c20
1 files changed, 7 insertions, 13 deletions
diff --git a/drivers/char/random.c b/drivers/char/random.c
index df43c5060f00..6b01b2be9dd4 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1018,7 +1018,7 @@ int __init rand_initialize(void)
*/
void add_device_randomness(const void *buf, size_t size)
{
- cycles_t cycles = random_get_entropy();
+ unsigned long cycles = random_get_entropy();
unsigned long flags, now = jiffies;
if (crng_init == 0 && size)
@@ -1049,8 +1049,7 @@ struct timer_rand_state {
*/
static void add_timer_randomness(struct timer_rand_state *state, unsigned int num)
{
- cycles_t cycles = random_get_entropy();
- unsigned long flags, now = jiffies;
+ unsigned long cycles = random_get_entropy(), now = jiffies, flags;
long delta, delta2, delta3;
spin_lock_irqsave(&input_pool.lock, flags);
@@ -1339,8 +1338,7 @@ static void mix_interrupt_randomness(struct work_struct *work)
void add_interrupt_randomness(int irq)
{
enum { MIX_INFLIGHT = 1U << 31 };
- cycles_t cycles = random_get_entropy();
- unsigned long now = jiffies;
+ unsigned long cycles = random_get_entropy(), now = jiffies;
struct fast_pool *fast_pool = this_cpu_ptr(&irq_randomness);
struct pt_regs *regs = get_irq_regs();
unsigned int new_count;
@@ -1353,16 +1351,12 @@ void add_interrupt_randomness(int irq)
if (cycles == 0)
cycles = get_reg(fast_pool, regs);
- if (sizeof(cycles) == 8)
+ if (sizeof(unsigned long) == 8) {
irq_data.u64[0] = cycles ^ rol64(now, 32) ^ irq;
- else {
+ irq_data.u64[1] = regs ? instruction_pointer(regs) : _RET_IP_;
+ } else {
irq_data.u32[0] = cycles ^ irq;
irq_data.u32[1] = now;
- }
-
- if (sizeof(unsigned long) == 8)
- irq_data.u64[1] = regs ? instruction_pointer(regs) : _RET_IP_;
- else {
irq_data.u32[2] = regs ? instruction_pointer(regs) : _RET_IP_;
irq_data.u32[3] = get_reg(fast_pool, regs);
}
@@ -1409,7 +1403,7 @@ static void entropy_timer(struct timer_list *t)
static void try_to_generate_entropy(void)
{
struct {
- cycles_t cycles;
+ unsigned long cycles;
struct timer_list timer;
} stack;