firewire: allow explicit flushing of iso packet completions

[linux-imx.git] / drivers / firewire / core-cdev.c

diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index 4799393247c8ada8a626722e0bea57c0ae99409e..22c6df5f136d3a631483cb5879d5aca2eb16eecf 100644 (file)
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -51,7 +51,7 @@
 /*
  * ABI version history is documented in linux/firewire-cdev.h.
  */
-#define FW_CDEV_KERNEL_VERSION                 4
+#define FW_CDEV_KERNEL_VERSION                 5
 #define FW_CDEV_VERSION_EVENT_REQUEST2         4
 #define FW_CDEV_VERSION_ALLOCATE_REGION_END    4
 
@@ -389,7 +389,7 @@ static void queue_bus_reset_event(struct client *client)
 
        e = kzalloc(sizeof(*e), GFP_KERNEL);
        if (e == NULL) {
-               fw_notify("Out of memory when allocating event\n");
+               fw_notice(client->device->card, "out of memory when allocating event\n");
                return;
        }
 
@@ -438,6 +438,7 @@ union ioctl_arg {
        struct fw_cdev_send_phy_packet          send_phy_packet;
        struct fw_cdev_receive_phy_packets      receive_phy_packets;
        struct fw_cdev_set_iso_channels         set_iso_channels;
+       struct fw_cdev_flush_iso                flush_iso;
 };
 
 static int ioctl_get_info(struct client *client, union ioctl_arg *arg)
@@ -691,7 +692,7 @@ static void handle_request(struct fw_card *card, struct fw_request *request,
        r = kmalloc(sizeof(*r), GFP_ATOMIC);
        e = kmalloc(sizeof(*e), GFP_ATOMIC);
        if (r == NULL || e == NULL) {
-               fw_notify("Out of memory when allocating event\n");
+               fw_notice(card, "out of memory when allocating event\n");
                goto failed;
        }
        r->card    = card;
@@ -928,7 +929,7 @@ static void iso_callback(struct fw_iso_context *context, u32 cycle,
 
        e = kmalloc(sizeof(*e) + header_length, GFP_ATOMIC);
        if (e == NULL) {
-               fw_notify("Out of memory when allocating event\n");
+               fw_notice(context->card, "out of memory when allocating event\n");
                return;
        }
        e->interrupt.type      = FW_CDEV_EVENT_ISO_INTERRUPT;
@@ -948,7 +949,7 @@ static void iso_mc_callback(struct fw_iso_context *context,
 
        e = kmalloc(sizeof(*e), GFP_ATOMIC);
        if (e == NULL) {
-               fw_notify("Out of memory when allocating event\n");
+               fw_notice(context->card, "out of memory when allocating event\n");
                return;
        }
        e->interrupt.type      = FW_CDEV_EVENT_ISO_INTERRUPT_MULTICHANNEL;
@@ -1168,6 +1169,16 @@ static int ioctl_stop_iso(struct client *client, union ioctl_arg *arg)
        return fw_iso_context_stop(client->iso_context);
 }
 
+static int ioctl_flush_iso(struct client *client, union ioctl_arg *arg)
+{
+       struct fw_cdev_flush_iso *a = &arg->flush_iso;
+
+       if (client->iso_context == NULL || a->handle != 0)
+               return -EINVAL;
+
+       return fw_iso_context_flush_completions(client->iso_context);
+}
+
 static int ioctl_get_cycle_timer2(struct client *client, union ioctl_arg *arg)
 {
        struct fw_cdev_get_cycle_timer2 *a = &arg->get_cycle_timer2;
@@ -1548,7 +1559,7 @@ void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p)
        list_for_each_entry(client, &card->phy_receiver_list, phy_receiver_link) {
                e = kmalloc(sizeof(*e) + 8, GFP_ATOMIC);
                if (e == NULL) {
-                       fw_notify("Out of memory when allocating event\n");
+                       fw_notice(card, "out of memory when allocating event\n");
                        break;
                }
                e->phy_packet.closure   = client->phy_receiver_closure;
@@ -1589,6 +1600,7 @@ static int (* const ioctl_handlers[])(struct client *, union ioctl_arg *) = {
        [0x15] = ioctl_send_phy_packet,
        [0x16] = ioctl_receive_phy_packets,
        [0x17] = ioctl_set_iso_channels,
+       [0x18] = ioctl_flush_iso,
 };
 
 static int dispatch_ioctl(struct client *client,