diff options
Diffstat (limited to 'drivers/message/i2o/driver.c')
-rw-r--r-- | drivers/message/i2o/driver.c | 89 |
1 files changed, 44 insertions, 45 deletions
diff --git a/drivers/message/i2o/driver.c b/drivers/message/i2o/driver.c index 91f4edbb2a2..c71e68f70e7 100644 --- a/drivers/message/i2o/driver.c +++ b/drivers/message/i2o/driver.c @@ -18,6 +18,8 @@ #include <linux/rwsem.h> #include <linux/i2o.h> +#define OSM_NAME "core" + /* max_drivers - Maximum I2O drivers (OSMs) which could be registered */ unsigned int i2o_max_drivers = I2O_MAX_DRIVERS; module_param_named(max_drivers, i2o_max_drivers, uint, 0); @@ -182,62 +184,59 @@ int i2o_driver_dispatch(struct i2o_controller *c, u32 m, struct i2o_driver *drv; u32 context = readl(&msg->u.s.icntxt); - if (likely(context < i2o_max_drivers)) { - spin_lock(&i2o_drivers_lock); - drv = i2o_drivers[context]; - spin_unlock(&i2o_drivers_lock); - - if (unlikely(!drv)) { - printk(KERN_WARNING "%s: Spurious reply to unknown " - "driver %d\n", c->name, context); - return -EIO; - } + if (unlikely(context >= i2o_max_drivers)) { + printk(KERN_WARNING "%s: Spurious reply to unknown driver " + "%d\n", c->name, readl(&msg->u.s.icntxt)); + return -EIO; + } - if ((readl(&msg->u.head[1]) >> 24) == I2O_CMD_UTIL_EVT_REGISTER) { - struct i2o_device *dev, *tmp; - struct i2o_event *evt; - u16 size; - u16 tid; + spin_lock(&i2o_drivers_lock); + drv = i2o_drivers[context]; + spin_unlock(&i2o_drivers_lock); - tid = readl(&msg->u.head[1]) & 0x1fff; + if (unlikely(!drv)) { + osm_warn("Spurious reply to unknown driver %d\n", context); + return -EIO; + } - pr_debug("%s: event received from device %d\n", c->name, - tid); + if ((readl(&msg->u.head[1]) >> 24) == I2O_CMD_UTIL_EVT_REGISTER) { + struct i2o_device *dev, *tmp; + struct i2o_event *evt; + u16 size; + u16 tid = readl(&msg->u.head[1]) & 0xfff; - /* cut of header from message size (in 32-bit words) */ - size = (readl(&msg->u.head[0]) >> 16) - 5; + osm_debug("event received from device %d\n", tid); - evt = kmalloc(size * 4 + sizeof(*evt), GFP_ATOMIC); - if (!evt) - return -ENOMEM; - memset(evt, 0, size * 4 + sizeof(*evt)); + /* cut of header from message size (in 32-bit words) */ + size = (readl(&msg->u.head[0]) >> 16) - 5; - evt->size = size; - memcpy_fromio(&evt->tcntxt, &msg->u.s.tcntxt, - (size + 2) * 4); + evt = kmalloc(size * 4 + sizeof(*evt), GFP_ATOMIC | __GFP_ZERO); + if (!evt) + return -ENOMEM; - list_for_each_entry_safe(dev, tmp, &c->devices, list) - if (dev->lct_data.tid == tid) { - evt->i2o_dev = dev; - break; - } + evt->size = size; + evt->tcntxt = readl(&msg->u.s.tcntxt); + evt->event_indicator = readl(&msg->body[0]); + memcpy_fromio(&evt->tcntxt, &msg->u.s.tcntxt, size * 4); - INIT_WORK(&evt->work, (void (*)(void *))drv->event, - evt); - queue_work(drv->event_queue, &evt->work); - return 1; + list_for_each_entry_safe(dev, tmp, &c->devices, list) + if (dev->lct_data.tid == tid) { + evt->i2o_dev = dev; + break; } - if (likely(drv->reply)) - return drv->reply(c, m, msg); - else - pr_debug("%s: Reply to driver %s, but no reply function" - " defined!\n", c->name, drv->name); + INIT_WORK(&evt->work, (void (*)(void *))drv->event, evt); + queue_work(drv->event_queue, &evt->work); + return 1; + } + + if (unlikely(!drv->reply)) { + pr_debug("%s: Reply to driver %s, but no reply function" + " defined!\n", c->name, drv->name); return -EIO; - } else - printk(KERN_WARNING "%s: Spurious reply to unknown driver " - "%d\n", c->name, readl(&msg->u.s.icntxt)); - return -EIO; + } + + return drv->reply(c, m, msg); } /** |