diff options
| author | Jonathan Corbet <corbet@lwn.net> | 2008-06-19 14:34:41 -0600 |
|---|---|---|
| committer | Dominik Brodowski <linux@dominikbrodowski.net> | 2008-06-24 15:33:44 +0200 |
| commit | 8b5332f6994e34f2b400b25975760da709bbaa63 (patch) | |
| tree | 2ad1bee9616a0be92a54f4c7c747674f6a72b9de /drivers/char/pcmcia/cm4000_cs.c | |
| parent | 4aeba0134f1e54cfd881e118b039ab6ed8b99126 (diff) | |
| download | linux-8b5332f6994e34f2b400b25975760da709bbaa63.tar.gz | |
pcmcia: cm40x0 cdev lock_kernel() pushdown
Signed-off-by: Jonathan Corbet <corbet@lwn.net> Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net>
Diffstat (limited to 'drivers/char/pcmcia/cm4000_cs.c')
| -rw-r--r-- | drivers/char/pcmcia/cm4000_cs.c | 25 |
1 files changed, 18 insertions, 7 deletions
diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c index 933a7dd8f86c..59ca35156d81 100644 --- a/drivers/char/pcmcia/cm4000_cs.c +++ b/drivers/char/pcmcia/cm4000_cs.c @@ -1652,16 +1652,22 @@ static int cmm_open(struct inode *inode, struct file *filp) struct cm4000_dev *dev; struct pcmcia_device *link; int minor = iminor(inode); + int ret; if (minor >= CM4000_MAX_DEV) return -ENODEV; + lock_kernel(); link = dev_table[minor]; - if (link == NULL || !pcmcia_dev_present(link)) - return -ENODEV; + if (link == NULL || !pcmcia_dev_present(link)) { + ret = -ENODEV; + goto out; + } - if (link->open) - return -EBUSY; + if (link->open) { + ret = -EBUSY; + goto out; + } dev = link->priv; filp->private_data = dev; @@ -1681,8 +1687,10 @@ static int cmm_open(struct inode *inode, struct file *filp) * vaild = block until valid (or card * inserted) */ - if (filp->f_flags & O_NONBLOCK) - return -EAGAIN; + if (filp->f_flags & O_NONBLOCK) { + ret = -EAGAIN; + goto out; + } dev->mdelay = T_50MSEC; @@ -1692,7 +1700,10 @@ static int cmm_open(struct inode *inode, struct file *filp) link->open = 1; /* only one open per device */ DEBUGP(2, dev, "<- cmm_open\n"); - return nonseekable_open(inode, filp); + ret = nonseekable_open(inode, filp); +out: + unlock_kernel(); + return ret; } static int cmm_close(struct inode *inode, struct file *filp) |