1 files changed, 56 insertions, 40 deletions

diff --git a/drivers/ieee1394/video1394.c b/drivers/ieee1394/video1394.c
index c6e3f02bc6d7..598b19fc5989 100644
--- a/drivers/ieee1394/video1394.c
+++ b/drivers/ieee1394/video1394.c
@@ -49,16 +49,16 @@
 #include <linux/compat.h>
 #include <linux/cdev.h>
 
-#include "ieee1394.h"
-#include "ieee1394_types.h"
+#include "dma.h"
+#include "highlevel.h"
 #include "hosts.h"
+#include "ieee1394.h"
 #include "ieee1394_core.h"
-#include "highlevel.h"
-#include "video1394.h"
+#include "ieee1394_hotplug.h"
+#include "ieee1394_types.h"
 #include "nodemgr.h"
-#include "dma.h"
-
 #include "ohci1394.h"
+#include "video1394.h"
 
 #define ISO_CHANNELS 64
 
@@ -129,7 +129,7 @@ struct file_ctx {
 #define DBGMSG(card, fmt, args...) \
 printk(KERN_INFO "video1394_%d: " fmt "\n" , card , ## args)
 #else
-#define DBGMSG(card, fmt, args...)
+#define DBGMSG(card, fmt, args...) do {} while (0)
 #endif
 
 /* print general (card independent) information */
@@ -714,8 +714,8 @@ static inline unsigned video1394_buffer_state(struct dma_iso_ctx *d,
 	return ret;
 }
 
-static int __video1394_ioctl(struct file *file,
-			     unsigned int cmd, unsigned long arg)
+static long video1394_ioctl(struct file *file,
+			    unsigned int cmd, unsigned long arg)
 {
 	struct file_ctx *ctx = (struct file_ctx *)file->private_data;
 	struct ti_ohci *ohci = ctx->ohci;
@@ -884,13 +884,14 @@ static int __video1394_ioctl(struct file *file,
 		struct dma_iso_ctx *d;
 		int next_prg;
 
-		if (copy_from_user(&v, argp, sizeof(v)))
+		if (unlikely(copy_from_user(&v, argp, sizeof(v))))
 			return -EFAULT;
 
 		d = find_ctx(&ctx->context_list, OHCI_ISO_RECEIVE, v.channel);
-		if (d == NULL) return -EFAULT;
+		if (unlikely(d == NULL))
+			return -EFAULT;
 
-		if ((v.buffer<0) || (v.buffer>=d->num_desc - 1)) {
+		if (unlikely((v.buffer<0) || (v.buffer>=d->num_desc - 1))) {
 			PRINT(KERN_ERR, ohci->host->id,
 			      "Buffer %d out of range",v.buffer);
 			return -EINVAL;
@@ -898,7 +899,7 @@ static int __video1394_ioctl(struct file *file,
 
 		spin_lock_irqsave(&d->lock,flags);
 
-		if (d->buffer_status[v.buffer]==VIDEO1394_BUFFER_QUEUED) {
+		if (unlikely(d->buffer_status[v.buffer]==VIDEO1394_BUFFER_QUEUED)) {
 			PRINT(KERN_ERR, ohci->host->id,
 			      "Buffer %d is already used",v.buffer);
 			spin_unlock_irqrestore(&d->lock,flags);
@@ -949,13 +950,14 @@ static int __video1394_ioctl(struct file *file,
 		struct dma_iso_ctx *d;
 		int i = 0;
 
-		if (copy_from_user(&v, argp, sizeof(v)))
+		if (unlikely(copy_from_user(&v, argp, sizeof(v))))
 			return -EFAULT;
 
 		d = find_ctx(&ctx->context_list, OHCI_ISO_RECEIVE, v.channel);
-		if (d == NULL) return -EFAULT;
+		if (unlikely(d == NULL))
+			return -EFAULT;
 
-		if ((v.buffer<0) || (v.buffer>d->num_desc - 1)) {
+		if (unlikely((v.buffer<0) || (v.buffer>d->num_desc - 1))) {
 			PRINT(KERN_ERR, ohci->host->id,
 			      "Buffer %d out of range",v.buffer);
 			return -EINVAL;
@@ -1008,7 +1010,7 @@ static int __video1394_ioctl(struct file *file,
 		spin_unlock_irqrestore(&d->lock, flags);
 
 		v.buffer=i;
-		if (copy_to_user(argp, &v, sizeof(v)))
+		if (unlikely(copy_to_user(argp, &v, sizeof(v))))
 			return -EFAULT;
 
 		return 0;
@@ -1156,15 +1158,6 @@ static int __video1394_ioctl(struct file *file,
 	}
 }
 
-static long video1394_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
-{
-	int err;
-	lock_kernel();
-	err = __video1394_ioctl(file, cmd, arg);
-	unlock_kernel();
-	return err;
-}
-
 /*
  *	This maps the vmalloced and reserved buffer to user space.
  *
@@ -1177,16 +1170,44 @@ static long video1394_ioctl(struct file *file, unsigned int cmd, unsigned long a
 static int video1394_mmap(struct file *file, struct vm_area_struct *vma)
 {
 	struct file_ctx *ctx = (struct file_ctx *)file->private_data;
-	int res = -EINVAL;
 
-	lock_kernel();
 	if (ctx->current_ctx == NULL) {
-		PRINT(KERN_ERR, ctx->ohci->host->id, "Current iso context not set");
-	} else
-		res = dma_region_mmap(&ctx->current_ctx->dma, file, vma);
-	unlock_kernel();
+		PRINT(KERN_ERR, ctx->ohci->host->id,
+				"Current iso context not set");
+		return -EINVAL;
+	}
+
+	return dma_region_mmap(&ctx->current_ctx->dma, file, vma);
+}
+
+static unsigned int video1394_poll(struct file *file, poll_table *pt)
+{
+	struct file_ctx *ctx;
+	unsigned int mask = 0;
+	unsigned long flags;
+	struct dma_iso_ctx *d;
+	int i;
+
+	ctx = file->private_data;
+	d = ctx->current_ctx;
+	if (d == NULL) {
+		PRINT(KERN_ERR, ctx->ohci->host->id,
+				"Current iso context not set");
+		return POLLERR;
+	}
+
+	poll_wait(file, &d->waitq, pt);
+
+	spin_lock_irqsave(&d->lock, flags);
+	for (i = 0; i < d->num_desc; i++) {
+		if (d->buffer_status[i] == VIDEO1394_BUFFER_READY) {
+			mask |= POLLIN | POLLRDNORM;
+			break;
+		}
+	}
+	spin_unlock_irqrestore(&d->lock, flags);
 
-	return res;
+	return mask;
 }
 
 static int video1394_open(struct inode *inode, struct file *file)
@@ -1220,7 +1241,6 @@ static int video1394_release(struct inode *inode, struct file *file)
 	struct list_head *lh, *next;
 	u64 mask;
 
-	lock_kernel();
 	list_for_each_safe(lh, next, &ctx->context_list) {
 		struct dma_iso_ctx *d;
 		d = list_entry(lh, struct dma_iso_ctx, link);
@@ -1241,7 +1261,6 @@ static int video1394_release(struct inode *inode, struct file *file)
 	kfree(ctx);
 	file->private_data = NULL;
 
-	unlock_kernel();
 	return 0;
 }
 
@@ -1257,6 +1276,7 @@ static struct file_operations video1394_fops=
 #ifdef CONFIG_COMPAT
 	.compat_ioctl = video1394_compat_ioctl,
 #endif
+	.poll =		video1394_poll,
 	.mmap =		video1394_mmap,
 	.open =		video1394_open,
 	.release =	video1394_release
@@ -1288,12 +1308,8 @@ static struct ieee1394_device_id video1394_id_table[] = {
 MODULE_DEVICE_TABLE(ieee1394, video1394_id_table);
 
 static struct hpsb_protocol_driver video1394_driver = {
-	.name		= "1394 Digital Camera Driver",
+	.name		= VIDEO1394_DRIVER_NAME,
 	.id_table	= video1394_id_table,
-	.driver		= {
-		.name	= VIDEO1394_DRIVER_NAME,
-		.bus	= &ieee1394_bus_type,
-	},
 };