diff options
Diffstat (limited to 'drivers/pcmcia/rsrc_nonstatic.c')
| -rw-r--r-- | drivers/pcmcia/rsrc_nonstatic.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/pcmcia/rsrc_nonstatic.c b/drivers/pcmcia/rsrc_nonstatic.c index 91626c17f97..1de46cf2772 100644 --- a/drivers/pcmcia/rsrc_nonstatic.c +++ b/drivers/pcmcia/rsrc_nonstatic.c @@ -274,17 +274,21 @@ static int readable(struct pcmcia_socket *s, struct resource *res, { int ret = -EINVAL; + mutex_lock(&s->ops_mutex); s->cis_mem.res = res; s->cis_virt = ioremap(res->start, s->map_size); if (s->cis_virt) { + mutex_unlock(&s->ops_mutex); /* as we're only called from pcmcia.c, we're safe */ if (s->callback->validate) ret = s->callback->validate(s, count); /* invalidate mapping */ + mutex_lock(&s->ops_mutex); iounmap(s->cis_virt); s->cis_virt = NULL; } s->cis_mem.res = NULL; + mutex_unlock(&s->ops_mutex); if ((ret) || (*count == 0)) return -EINVAL; return 0; @@ -300,6 +304,8 @@ static int checksum(struct pcmcia_socket *s, struct resource *res, int i, a = 0, b = -1, d; void __iomem *virt; + mutex_lock(&s->ops_mutex); + virt = ioremap(res->start, s->map_size); if (virt) { map.map = 0; @@ -322,6 +328,8 @@ static int checksum(struct pcmcia_socket *s, struct resource *res, iounmap(virt); } + mutex_unlock(&s->ops_mutex); + if (b == -1) return -EINVAL; |