diff options
Diffstat (limited to 'drivers/isdn')
-rw-r--r-- | drivers/isdn/capi/capi.c | 17 | ||||
-rw-r--r-- | drivers/isdn/hardware/eicon/divamnt.c | 16 | ||||
-rw-r--r-- | drivers/isdn/hardware/eicon/divasi.c | 2 | ||||
-rw-r--r-- | drivers/isdn/hardware/eicon/divasmain.c | 2 | ||||
-rw-r--r-- | drivers/isdn/i4l/isdn_common.c | 3 |
5 files changed, 28 insertions, 12 deletions
diff --git a/drivers/isdn/capi/capi.c b/drivers/isdn/capi/capi.c index 6ca0bb9..2095153 100644 --- a/drivers/isdn/capi/capi.c +++ b/drivers/isdn/capi/capi.c @@ -20,6 +20,7 @@ #include <linux/signal.h> #include <linux/mutex.h> #include <linux/mm.h> +#include <linux/smp_lock.h> #include <linux/timer.h> #include <linux/wait.h> #ifdef CONFIG_ISDN_CAPI_MIDDLEWARE @@ -983,13 +984,17 @@ capi_ioctl(struct inode *inode, struct file *file, static int capi_open(struct inode *inode, struct file *file) { + int ret; + + lock_kernel(); if (file->private_data) - return -EEXIST; - - if ((file->private_data = capidev_alloc()) == NULL) - return -ENOMEM; - - return nonseekable_open(inode, file); + ret = -EEXIST; + else if ((file->private_data = capidev_alloc()) == NULL) + ret = -ENOMEM; + else + ret = nonseekable_open(inode, file); + unlock_kernel(); + return ret; } static int diff --git a/drivers/isdn/hardware/eicon/divamnt.c b/drivers/isdn/hardware/eicon/divamnt.c index c909289..1e85f74 100644 --- a/drivers/isdn/hardware/eicon/divamnt.c +++ b/drivers/isdn/hardware/eicon/divamnt.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/kernel.h> #include <linux/poll.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #include "platform.h" @@ -127,14 +128,19 @@ static unsigned int maint_poll(struct file *file, poll_table * wait) static int maint_open(struct inode *ino, struct file *filep) { + int ret; + + lock_kernel(); /* only one open is allowed, so we test it atomically */ if (test_and_set_bit(0, &opened)) - return (-EBUSY); - - filep->private_data = NULL; - - return nonseekable_open(ino, filep); + ret = -EBUSY; + else { + filep->private_data = NULL; + ret = nonseekable_open(ino, filep); + } + unlock_kernel(); + return ret; } static int maint_close(struct inode *ino, struct file *filep) diff --git a/drivers/isdn/hardware/eicon/divasi.c b/drivers/isdn/hardware/eicon/divasi.c index 78f141e..f4969fe 100644 --- a/drivers/isdn/hardware/eicon/divasi.c +++ b/drivers/isdn/hardware/eicon/divasi.c @@ -17,6 +17,7 @@ #include <linux/poll.h> #include <linux/proc_fs.h> #include <linux/skbuff.h> +#include <linux/smp_lock.h> #include <asm/uaccess.h> #include "platform.h" @@ -400,6 +401,7 @@ static unsigned int um_idi_poll(struct file *file, poll_table * wait) static int um_idi_open(struct inode *inode, struct file *file) { + cycle_kernel_lock(); return (0); } diff --git a/drivers/isdn/hardware/eicon/divasmain.c b/drivers/isdn/hardware/eicon/divasmain.c index 16a874b..fbbcb27 100644 --- a/drivers/isdn/hardware/eicon/divasmain.c +++ b/drivers/isdn/hardware/eicon/divasmain.c @@ -21,6 +21,7 @@ #include <linux/list.h> #include <linux/poll.h> #include <linux/kmod.h> +#include <linux/smp_lock.h> #include "platform.h" #undef ID_MASK @@ -580,6 +581,7 @@ xdi_copy_from_user(void *os_handle, void *dst, const void __user *src, int lengt */ static int divas_open(struct inode *inode, struct file *file) { + cycle_kernel_lock(); return (0); } diff --git a/drivers/isdn/i4l/isdn_common.c b/drivers/isdn/i4l/isdn_common.c index 8d8c6b7..7188c59 100644 --- a/drivers/isdn/i4l/isdn_common.c +++ b/drivers/isdn/i4l/isdn_common.c @@ -1732,7 +1732,7 @@ isdn_open(struct inode *ino, struct file *filep) int chidx; int retval = -ENODEV; - + lock_kernel(); if (minor == ISDN_MINOR_STATUS) { infostruct *p; @@ -1783,6 +1783,7 @@ isdn_open(struct inode *ino, struct file *filep) #endif out: nonseekable_open(ino, filep); + unlock_kernel(); return retval; } |