diff options
| author | Joel Stanley <joel@jms.id.au> | 2020-08-10 07:07:46 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2020-08-10 07:07:49 +0300 |
| commit | 4789fd48a313d36fe6b8fc1da5e0788f5ea074cb (patch) | |
| tree | 2c8c27b52f0e38abb7416ce81b04c3b85511b694 /drivers/char | |
| parent | 8a9b346382056b52cd7ff141ae9f15a0fcfeb13d (diff) | |
| parent | d9939285fc818425ae92bd99f8c97b6b9ef3bb88 (diff) | |
| download | linux-dev-5.4.tar.xz | |
Merge tag 'v5.4.57' into dev-5.4dev-5.4
This is the 5.4.57 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/mem.c | 10 | ||||
| -rw-r--r-- | drivers/char/random.c | 1 |
2 files changed, 8 insertions, 3 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 31429e9f6600..06611d177d4d 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -815,7 +815,8 @@ static struct inode *devmem_inode; #ifdef CONFIG_IO_STRICT_DEVMEM void revoke_devmem(struct resource *res) { - struct inode *inode = READ_ONCE(devmem_inode); + /* pairs with smp_store_release() in devmem_init_inode() */ + struct inode *inode = smp_load_acquire(&devmem_inode); /* * Check that the initialization has completed. Losing the race @@ -1035,8 +1036,11 @@ static int devmem_init_inode(void) return rc; } - /* publish /dev/mem initialized */ - WRITE_ONCE(devmem_inode, inode); + /* + * Publish /dev/mem initialized. + * Pairs with smp_load_acquire() in revoke_devmem(). + */ + smp_store_release(&devmem_inode, inode); return 0; } diff --git a/drivers/char/random.c b/drivers/char/random.c index 8ff28c14af7e..e877c20e0ee0 100644 --- a/drivers/char/random.c +++ b/drivers/char/random.c @@ -1330,6 +1330,7 @@ void add_interrupt_randomness(int irq, int irq_flags) fast_mix(fast_pool); add_interrupt_bench(cycles); + this_cpu_add(net_rand_state.s1, fast_pool->pool[cycles & 3]); if (unlikely(crng_init == 0)) { if ((fast_pool->count >= 64) && |