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-rw-r--r--drivers/firewire/core-cdev.c32
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/firewire/core-cdev.c b/drivers/firewire/core-cdev.c
index fb6c651214f3..9f89c17730b1 100644
--- a/drivers/firewire/core-cdev.c
+++ b/drivers/firewire/core-cdev.c
@@ -10,6 +10,7 @@
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
+#include <linux/err.h>
#include <linux/errno.h>
#include <linux/firewire.h>
#include <linux/firewire-cdev.h>
@@ -953,11 +954,25 @@ static enum dma_data_direction iso_dma_direction(struct fw_iso_context *context)
return DMA_FROM_DEVICE;
}
+static struct fw_iso_context *fw_iso_mc_context_create(struct fw_card *card,
+ fw_iso_mc_callback_t callback,
+ void *callback_data)
+{
+ struct fw_iso_context *ctx;
+
+ ctx = fw_iso_context_create(card, FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL,
+ 0, 0, 0, NULL, callback_data);
+ if (!IS_ERR(ctx))
+ ctx->callback.mc = callback;
+
+ return ctx;
+}
+
static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg)
{
struct fw_cdev_create_iso_context *a = &arg->create_iso_context;
struct fw_iso_context *context;
- fw_iso_callback_t cb;
+ union fw_iso_callback cb;
int ret;
BUILD_BUG_ON(FW_CDEV_ISO_CONTEXT_TRANSMIT != FW_ISO_CONTEXT_TRANSMIT ||
@@ -970,7 +985,7 @@ static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg)
if (a->speed > SCODE_3200 || a->channel > 63)
return -EINVAL;
- cb = iso_callback;
+ cb.sc = iso_callback;
break;
case FW_ISO_CONTEXT_RECEIVE:
@@ -978,19 +993,24 @@ static int ioctl_create_iso_context(struct client *client, union ioctl_arg *arg)
a->channel > 63)
return -EINVAL;
- cb = iso_callback;
+ cb.sc = iso_callback;
break;
case FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL:
- cb = (fw_iso_callback_t)iso_mc_callback;
+ cb.mc = iso_mc_callback;
break;
default:
return -EINVAL;
}
- context = fw_iso_context_create(client->device->card, a->type,
- a->channel, a->speed, a->header_size, cb, client);
+ if (a->type == FW_ISO_CONTEXT_RECEIVE_MULTICHANNEL)
+ context = fw_iso_mc_context_create(client->device->card, cb.mc,
+ client);
+ else
+ context = fw_iso_context_create(client->device->card, a->type,
+ a->channel, a->speed,
+ a->header_size, cb.sc, client);
if (IS_ERR(context))
return PTR_ERR(context);
if (client->version < FW_CDEV_VERSION_AUTO_FLUSH_ISO_OVERFLOW)