linux-kernel - [patch] ported drivers/video/omap2/dss/rfbi.c to new kfifo API

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Date:	Sun, 27 Dec 2009 13:16:58 +0100
From:	Stefani Seibold <stefani@...bold.net>
To:	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Greg KH <greg@...ah.com>
Subject: [patch] ported drivers/video/omap2/dss/rfbi.c to new kfifo API

This patch ported the drivers/video/omap2/dss/rfbi.c to the new kfifo API.
This should be the last one ;-)

The patch-set is against mm tree from 11-Dec-2009

Greetings,
Stefani

Signed-off-by: Stefani Seibold <stefani@...bold.net>
---
 rfbi.c |   21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

--- mmotm.orig/drivers/video/omap2/dss/rfbi.c	2009-12-27 13:04:16.495740629 +0100
+++ mmotm.new/drivers/video/omap2/dss/rfbi.c	2009-12-27 13:08:50.188701965 +0100
@@ -120,7 +120,7 @@ static struct {
 
 	struct omap_dss_device *dssdev[2];
 
-	struct kfifo      *cmd_fifo;
+	struct kfifo      cmd_fifo;
 	spinlock_t        cmd_lock;
 	struct completion cmd_done;
 	atomic_t          cmd_fifo_full;
@@ -1013,8 +1013,9 @@ static void process_cmd_fifo(void)
 	while (true) {
 		spin_lock_irqsave(rfbi.cmd_fifo->lock, flags);
 
-		len = __kfifo_get(rfbi.cmd_fifo, (unsigned char *)&p,
-				  sizeof(struct update_param));
+		len = kfifo_out_locked(&rfbi.cmd_fifo, (unsigned char *)&p,
+				  sizeof(struct update_param),
+				  &rfbi.cmd_lock);
 		if (len == 0) {
 			DSSDBG("nothing more in fifo\n");
 			atomic_set(&rfbi.cmd_pending, 0);
@@ -1053,8 +1054,7 @@ static void rfbi_push_cmd(struct update_
 		int available;
 
 		spin_lock_irqsave(rfbi.cmd_fifo->lock, flags);
-		available = RFBI_CMD_FIFO_LEN_BYTES -
-			__kfifo_len(rfbi.cmd_fifo);
+		available = kfifo_avail(&rfbi.cmd_fifo);
 
 /*		DSSDBG("%d bytes left in fifo\n", available); */
 		if (available < sizeof(struct update_param)) {
@@ -1066,8 +1066,9 @@ static void rfbi_push_cmd(struct update_
 			continue;
 		}
 
-		ret = __kfifo_put(rfbi.cmd_fifo, (unsigned char *)p,
-				  sizeof(struct update_param));
+		ret = kfifo_in_locked(&rfbi.cmd_fifo, (unsigned char *)p,
+				  sizeof(struct update_param),
+				  &rfbi.cmd_lock);
 /*		DSSDBG("pushed %d bytes\n", ret);*/
 
 		spin_unlock_irqrestore(rfbi.cmd_fifo->lock, flags);
@@ -1157,9 +1158,7 @@ int rfbi_init(void)
 	u32 l;
 
 	spin_lock_init(&rfbi.cmd_lock);
-	rfbi.cmd_fifo = kfifo_alloc(RFBI_CMD_FIFO_LEN_BYTES, GFP_KERNEL,
-				    &rfbi.cmd_lock);
-	if (IS_ERR(rfbi.cmd_fifo))
+	if (kfifo_alloc(&rfbi.cmd_fifo, RFBI_CMD_FIFO_LEN_BYTES, GFP_KERNEL))
 		return -ENOMEM;
 
 	init_completion(&rfbi.cmd_done);
@@ -1196,7 +1195,7 @@ void rfbi_exit(void)
 {
 	DSSDBG("rfbi_exit\n");
 
-	kfifo_free(rfbi.cmd_fifo);
+	kfifo_free(&rfbi.cmd_fifo);
 
 	iounmap(rfbi.base);
 }


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