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/* net/atm/resources.h - ATM-related resources */

/* Written 1995-1998 by Werner Almesberger, EPFL LRC/ICA */


#ifndef NET_ATM_RESOURCES_H
#define NET_ATM_RESOURCES_H

#include <linux/atmdev.h>
#include <linux/mutex.h>


extern struct list_head atm_devs;
extern struct mutex atm_dev_mutex;

int atm_dev_ioctl(unsigned int cmd, void __user *arg, int compat);


#ifdef CONFIG_PROC_FS

#include <linux/proc_fs.h>

void *atm_dev_seq_start(struct seq_file *seq, loff_t *pos);
void atm_dev_seq_stop(struct seq_file *seq, void *v);
void *atm_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);


int atm_proc_dev_register(struct atm_dev *dev);
void atm_proc_dev_deregister(struct atm_dev *dev);

#else

static inline int atm_proc_dev_register(struct atm_dev *dev)
{
	return 0;
}

static inline void atm_proc_dev_deregister(struct atm_dev *dev)
{
	/* nothing */
}

#endif /* CONFIG_PROC_FS */

int atm_register_sysfs(struct atm_dev *adev, struct device *parent);
void atm_unregister_sysfs(struct atm_dev *adev);
#endif
ke timer handling more robust
Erik reported that on a preproduction hardware a CMCI storm triggers the BUG_ON in add_timer_on(). The reason is that the per CPU MCE timer is started by the CMCI logic before the MCE CPU hotplug callback starts the timer with add_timer_on(). So the timer is already queued which triggers the BUG. Using add_timer_on() is pretty pointless in this code because the timer is strictlty per CPU, initialized as pinned and all operations which arm the timer happen on the CPU to which the timer belongs. Simplify the whole machinery by using mod_timer() instead of add_timer_on() which avoids the problem because mod_timer() can handle already queued timers. Use __start_timer() everywhere so the earliest armed expiry time is preserved. Reported-by: Erik Veijola <erik.veijola@intel.com> Tested-by: Borislav Petkov <bp@alien8.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Borislav Petkov <bp@alien8.de> Cc: Tony Luck <tony.luck@intel.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1701310936080.3457@nanos Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/usb/musb/musb_cppi41.c')