None of the functions that acquire the comedi_file_info_table_lock spin-lock need to disable interrupts.
Signed-off-by: Ian Abbott <[email protected]> --- drivers/staging/comedi/comedi_fops.c | 25 ++++++++++--------------- 1 files changed, 10 insertions(+), 15 deletions(-) diff --git a/drivers/staging/comedi/comedi_fops.c b/drivers/staging/comedi/comedi_fops.c index 9bcf87a..f5417a3 100644 --- a/drivers/staging/comedi/comedi_fops.c +++ b/drivers/staging/comedi/comedi_fops.c @@ -2192,7 +2192,6 @@ static void comedi_device_cleanup(struct comedi_device *dev) int comedi_alloc_board_minor(struct device *hardware_device) { - unsigned long flags; struct comedi_device_file_info *info; struct device *csdev; unsigned i; @@ -2207,14 +2206,14 @@ int comedi_alloc_board_minor(struct device *hardware_device) return -ENOMEM; } comedi_device_init(info->device); - spin_lock_irqsave(&comedi_file_info_table_lock, flags); + spin_lock(&comedi_file_info_table_lock); for (i = 0; i < COMEDI_NUM_BOARD_MINORS; ++i) { if (comedi_file_info_table[i] == NULL) { comedi_file_info_table[i] = info; break; } } - spin_unlock_irqrestore(&comedi_file_info_table_lock, flags); + spin_unlock(&comedi_file_info_table_lock); if (i == COMEDI_NUM_BOARD_MINORS) { comedi_device_cleanup(info->device); kfree(info->device); @@ -2271,14 +2270,13 @@ int comedi_alloc_board_minor(struct device *hardware_device) void comedi_free_board_minor(unsigned minor) { - unsigned long flags; struct comedi_device_file_info *info; BUG_ON(minor >= COMEDI_NUM_BOARD_MINORS); - spin_lock_irqsave(&comedi_file_info_table_lock, flags); + spin_lock(&comedi_file_info_table_lock); info = comedi_file_info_table[minor]; comedi_file_info_table[minor] = NULL; - spin_unlock_irqrestore(&comedi_file_info_table_lock, flags); + spin_unlock(&comedi_file_info_table_lock); if (info) { struct comedi_device *dev = info->device; @@ -2297,7 +2295,6 @@ void comedi_free_board_minor(unsigned minor) int comedi_alloc_subdevice_minor(struct comedi_device *dev, struct comedi_subdevice *s) { - unsigned long flags; struct comedi_device_file_info *info; struct device *csdev; unsigned i; @@ -2309,14 +2306,14 @@ int comedi_alloc_subdevice_minor(struct comedi_device *dev, info->device = dev; info->read_subdevice = s; info->write_subdevice = s; - spin_lock_irqsave(&comedi_file_info_table_lock, flags); + spin_lock(&comedi_file_info_table_lock); for (i = COMEDI_FIRST_SUBDEVICE_MINOR; i < COMEDI_NUM_MINORS; ++i) { if (comedi_file_info_table[i] == NULL) { comedi_file_info_table[i] = info; break; } } - spin_unlock_irqrestore(&comedi_file_info_table_lock, flags); + spin_unlock(&comedi_file_info_table_lock); if (i == COMEDI_NUM_MINORS) { kfree(info); printk(KERN_ERR @@ -2372,7 +2369,6 @@ int comedi_alloc_subdevice_minor(struct comedi_device *dev, void comedi_free_subdevice_minor(struct comedi_subdevice *s) { - unsigned long flags; struct comedi_device_file_info *info; if (s == NULL) @@ -2383,10 +2379,10 @@ void comedi_free_subdevice_minor(struct comedi_subdevice *s) BUG_ON(s->minor >= COMEDI_NUM_MINORS); BUG_ON(s->minor < COMEDI_FIRST_SUBDEVICE_MINOR); - spin_lock_irqsave(&comedi_file_info_table_lock, flags); + spin_lock(&comedi_file_info_table_lock); info = comedi_file_info_table[s->minor]; comedi_file_info_table[s->minor] = NULL; - spin_unlock_irqrestore(&comedi_file_info_table_lock, flags); + spin_unlock(&comedi_file_info_table_lock); if (s->class_dev) { device_destroy(comedi_class, MKDEV(COMEDI_MAJOR, s->minor)); @@ -2397,13 +2393,12 @@ void comedi_free_subdevice_minor(struct comedi_subdevice *s) struct comedi_device_file_info *comedi_get_device_file_info(unsigned minor) { - unsigned long flags; struct comedi_device_file_info *info; BUG_ON(minor >= COMEDI_NUM_MINORS); - spin_lock_irqsave(&comedi_file_info_table_lock, flags); + spin_lock(&comedi_file_info_table_lock); info = comedi_file_info_table[minor]; - spin_unlock_irqrestore(&comedi_file_info_table_lock, flags); + spin_unlock(&comedi_file_info_table_lock); return info; } EXPORT_SYMBOL_GPL(comedi_get_device_file_info); -- 1.7.8.5 _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
