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| author | Tejun Heo <tj@kernel.org> | 2009-07-04 00:13:18 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-07-04 00:13:18 +0200 |
| commit | c43768cbb7655ea5ff782ae250f6e2ef4297cf98 (patch) | |
| tree | 3982e41dde3eecaa3739a5d1a8ed18d04bd74f01 /drivers/scsi/hosts.c | |
| parent | percpu: use __weak only in the definition of weak percpu variables (diff) | |
| parent | Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify (diff) | |
| download | linux-c43768cbb7655ea5ff782ae250f6e2ef4297cf98.tar.xz linux-c43768cbb7655ea5ff782ae250f6e2ef4297cf98.zip | |
Merge branch 'master' into for-next
Pull linus#master to merge PER_CPU_DEF_ATTRIBUTES and alpha build fix
changes. As alpha in percpu tree uses 'weak' attribute instead of
inline assembly, there's no need for __used attribute.
Conflicts:
arch/alpha/include/asm/percpu.h
arch/mn10300/kernel/vmlinux.lds.S
include/linux/percpu-defs.h
Diffstat (limited to 'drivers/scsi/hosts.c')
| -rw-r--r-- | drivers/scsi/hosts.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/scsi/hosts.c b/drivers/scsi/hosts.c index 89d41a424b33..5fd2da494d08 100644 --- a/drivers/scsi/hosts.c +++ b/drivers/scsi/hosts.c @@ -40,7 +40,7 @@ #include "scsi_logging.h" -static int scsi_host_next_hn; /* host_no for next new host */ +static atomic_t scsi_host_next_hn; /* host_no for next new host */ static void scsi_host_cls_release(struct device *dev) @@ -333,7 +333,11 @@ struct Scsi_Host *scsi_host_alloc(struct scsi_host_template *sht, int privsize) mutex_init(&shost->scan_mutex); - shost->host_no = scsi_host_next_hn++; /* XXX(hch): still racy */ + /* + * subtract one because we increment first then return, but we need to + * know what the next host number was before increment + */ + shost->host_no = atomic_inc_return(&scsi_host_next_hn) - 1; shost->dma_channel = 0xff; /* These three are default values which can be overridden */ |