diff options
Diffstat (limited to 'drivers/s390/cio/cmf.c')
| -rw-r--r-- | drivers/s390/cio/cmf.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/drivers/s390/cio/cmf.c b/drivers/s390/cio/cmf.c index 2a34eb5f6..268aa23af 100644 --- a/drivers/s390/cio/cmf.c +++ b/drivers/s390/cio/cmf.c @@ -164,6 +164,9 @@ static inline u64 time_to_avg_nsec(u32 value, u32 count) return ret; } +#define CMF_OFF 0 +#define CMF_ON 2 + /* * Activate or deactivate the channel monitor. When area is NULL, * the monitor is deactivated. The channel monitor needs to @@ -176,7 +179,7 @@ static inline void cmf_activate(void *area, unsigned int onoff) register long __gpr1 asm("1"); __gpr2 = area; - __gpr1 = onoff ? 2 : 0; + __gpr1 = onoff; /* activate channel measurement */ asm("schm" : : "d" (__gpr2), "d" (__gpr1) ); } @@ -587,7 +590,7 @@ static int alloc_cmb(struct ccw_device *cdev) /* everything ok */ memset(mem, 0, size); cmb_area.mem = mem; - cmf_activate(cmb_area.mem, 1); + cmf_activate(cmb_area.mem, CMF_ON); } } @@ -621,7 +624,7 @@ static void free_cmb(struct ccw_device *cdev) if (list_empty(&cmb_area.list)) { ssize_t size; size = sizeof(struct cmb) * cmb_area.num_channels; - cmf_activate(NULL, 0); + cmf_activate(NULL, CMF_OFF); free_pages((unsigned long)cmb_area.mem, get_order(size)); cmb_area.mem = NULL; } @@ -841,7 +844,7 @@ static int alloc_cmbe(struct ccw_device *cdev) /* activate global measurement if this is the first channel */ if (list_empty(&cmb_area.list)) - cmf_activate(NULL, 1); + cmf_activate(NULL, CMF_ON); list_add_tail(&cdev->private->cmb_list, &cmb_area.list); spin_unlock_irq(cdev->ccwlock); @@ -878,7 +881,7 @@ static void free_cmbe(struct ccw_device *cdev) /* deactivate global measurement if this is the last channel */ list_del_init(&cdev->private->cmb_list); if (list_empty(&cmb_area.list)) - cmf_activate(NULL, 0); + cmf_activate(NULL, CMF_OFF); spin_unlock_irq(cdev->ccwlock); spin_unlock(&cmb_area.lock); } @@ -1332,7 +1335,7 @@ void cmf_reactivate(void) { spin_lock(&cmb_area.lock); if (!list_empty(&cmb_area.list)) - cmf_activate(cmb_area.mem, 1); + cmf_activate(cmb_area.mem, CMF_ON); spin_unlock(&cmb_area.lock); } |