diff options
Diffstat (limited to 'drivers/hv/connection.c')
| -rw-r--r-- | drivers/hv/connection.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/drivers/hv/connection.c b/drivers/hv/connection.c index 2e7801a..df2363e 100644 --- a/drivers/hv/connection.c +++ b/drivers/hv/connection.c @@ -277,7 +277,6 @@ struct vmbus_channel *relid2channel(u32 relid) static void process_chn_event(u32 relid) { struct vmbus_channel *channel; - unsigned long flags; void *arg; bool read_state; u32 bytes_to_read; @@ -296,13 +295,12 @@ static void process_chn_event(u32 relid) /* * A channel once created is persistent even when there * is no driver handling the device. An unloading driver - * sets the onchannel_callback to NULL under the - * protection of the channel inbound_lock. Thus, checking - * and invoking the driver specific callback takes care of - * orderly unloading of the driver. + * sets the onchannel_callback to NULL on the same CPU + * as where this interrupt is handled (in an interrupt context). + * Thus, checking and invoking the driver specific callback takes + * care of orderly unloading of the driver. */ - spin_lock_irqsave(&channel->inbound_lock, flags); if (channel->onchannel_callback != NULL) { arg = channel->channel_callback_context; read_state = channel->batched_reading; @@ -327,7 +325,6 @@ static void process_chn_event(u32 relid) pr_err("no channel callback for relid - %u\n", relid); } - spin_unlock_irqrestore(&channel->inbound_lock, flags); } /* |
