pcmcia: cm40x0 cdev lock_kernel() pushdown

[linux-2.6-omap-h63xx.git] / drivers / char / pcmcia / cm4000_cs.c

diff --git a/drivers/char/pcmcia/cm4000_cs.c b/drivers/char/pcmcia/cm4000_cs.c
index 933a7dd8f86c0f47e4d5e63db5075e382ca3f251..59ca35156d8159699f960cdd1aac43a448dc023f 100644 (file)
--- 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)