From ea2959a2972410f15155a015df74ce77ac79f8b8 Mon Sep 17 00:00:00 2001 From: Jonathan Corbet Date: Thu, 15 May 2008 10:07:56 -0600 Subject: paride: cdev lock_kernel() pushdown Signed-off-by: Jonathan Corbet --- drivers/block/paride/pg.c | 22 ++++++++++++++++------ drivers/block/paride/pt.c | 8 +++++++- 2 files changed, 23 insertions(+), 7 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/paride/pg.c b/drivers/block/paride/pg.c index ab86e23ddc6..9d92636350e 100644 --- a/drivers/block/paride/pg.c +++ b/drivers/block/paride/pg.c @@ -162,6 +162,7 @@ enum {D_PRT, D_PRO, D_UNI, D_MOD, D_SLV, D_DLY}; #include #include #include /* current, TASK_* */ +#include #include #include @@ -515,12 +516,18 @@ static int pg_open(struct inode *inode, struct file *file) { int unit = iminor(inode) & 0x7f; struct pg *dev = &devices[unit]; + int ret = 0; - if ((unit >= PG_UNITS) || (!dev->present)) - return -ENODEV; + lock_kernel(); + if ((unit >= PG_UNITS) || (!dev->present)) { + ret = -ENODEV; + goto out; + } - if (test_and_set_bit(0, &dev->access)) - return -EBUSY; + if (test_and_set_bit(0, &dev->access)) { + ret = -EBUSY; + goto out; + } if (dev->busy) { pg_reset(dev); @@ -533,12 +540,15 @@ static int pg_open(struct inode *inode, struct file *file) if (dev->bufptr == NULL) { clear_bit(0, &dev->access); printk("%s: buffer allocation failed\n", dev->name); - return -ENOMEM; + ret = -ENOMEM; + goto out; } file->private_data = dev; - return 0; +out: + unlock_kernel(); + return ret; } static int pg_release(struct inode *inode, struct file *file) diff --git a/drivers/block/paride/pt.c b/drivers/block/paride/pt.c index 8b9549ab4a4..314333db16e 100644 --- a/drivers/block/paride/pt.c +++ b/drivers/block/paride/pt.c @@ -146,6 +146,7 @@ static int (*drives[4])[6] = {&drive0, &drive1, &drive2, &drive3}; #include #include #include /* current, TASK_*, schedule_timeout() */ +#include #include @@ -650,8 +651,11 @@ static int pt_open(struct inode *inode, struct file *file) struct pt_unit *tape = pt + unit; int err; - if (unit >= PT_UNITS || (!tape->present)) + lock_kernel(); + if (unit >= PT_UNITS || (!tape->present)) { + unlock_kernel(); return -ENODEV; + } err = -EBUSY; if (!atomic_dec_and_test(&tape->available)) @@ -678,10 +682,12 @@ static int pt_open(struct inode *inode, struct file *file) } file->private_data = tape; + unlock_kernel(); return 0; out: atomic_inc(&tape->available); + unlock_kernel(); return err; } -- cgit v1.2.3