diff options
| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-27 11:49:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-07-27 11:49:37 +0200 |
| commit | 65a9bde6ed484880987a6d88de6e372eca52059f (patch) | |
| tree | a192e1a8a54d334f457413f9c16041ffdf11533d /drivers/char | |
| parent | 860e73b49cd933c708e3e1e1e07cdea81b6acd1c (diff) | |
| parent | 92ed301919932f777713b9172e525674157e983d (diff) | |
Merge 5.8-rc7 into char-misc-next
This should resolve the merge/build issues reported when trying to
create linux-next.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/mem.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c index 934c92dcb9ab..687d4af6945d 100644 --- a/drivers/char/mem.c +++ b/drivers/char/mem.c @@ -814,7 +814,8 @@ 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 @@ -1028,8 +1029,11 @@ 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; } |