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| author | Gerald Schaefer <gerald.schaefer@de.ibm.com> | 2009-12-07 12:52:17 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2009-12-07 12:51:38 +0100 |
| commit | 1963403aae0fc5a4e20cf2e51e4f0148fdf938b4 (patch) | |
| tree | 7d876c21ad2a7073ca09aaa3b0247246a9b9e361 /drivers/s390/char/monreader.c | |
| parent | [S390] s390: remove unused nfsd #includes (diff) | |
| download | linux-1963403aae0fc5a4e20cf2e51e4f0148fdf938b4.tar.xz linux-1963403aae0fc5a4e20cf2e51e4f0148fdf938b4.zip | |
[S390] monreader: remove lock_kernel() from open() function
The lock_kernel() calls in the open() function are unnecessary because
misc_register() is called last in module_init() and concurrent open()
calls are handled by other means.
Signed-off-by: Gerald Schaefer <gerald.schaefer@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/char/monreader.c')
| -rw-r--r-- | drivers/s390/char/monreader.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c index 66e21dd23154..60473f86e1f9 100644 --- a/drivers/s390/char/monreader.c +++ b/drivers/s390/char/monreader.c @@ -12,7 +12,6 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/init.h> -#include <linux/smp_lock.h> #include <linux/errno.h> #include <linux/types.h> #include <linux/kernel.h> @@ -283,7 +282,6 @@ static int mon_open(struct inode *inode, struct file *filp) /* * only one user allowed */ - lock_kernel(); rc = -EBUSY; if (test_and_set_bit(MON_IN_USE, &mon_in_use)) goto out; @@ -321,7 +319,6 @@ static int mon_open(struct inode *inode, struct file *filp) } filp->private_data = monpriv; dev_set_drvdata(monreader_device, monpriv); - unlock_kernel(); return nonseekable_open(inode, filp); out_path: @@ -331,7 +328,6 @@ out_priv: out_use: clear_bit(MON_IN_USE, &mon_in_use); out: - unlock_kernel(); return rc; } @@ -607,6 +603,10 @@ static int __init mon_init(void) } dcss_mkname(mon_dcss_name, &user_data_connect[8]); + /* + * misc_register() has to be the last action in module_init(), because + * file operations will be available right after this. + */ rc = misc_register(&mon_dev); if (rc < 0 ) goto out; |