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Message-ID: <20241023055317.313234-1-hch@lst.de>
Date: Wed, 23 Oct 2024 07:53:04 +0200
From: Christoph Hellwig <hch@....de>
To: jassisinghbrar@...il.com
Cc: stefani@...bold.net,
gregkh@...uxfoundation.org,
jirislaby@...nel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2] kfifo: don't include dma-mapping.h in kfifo.h
Nothing in kfifo.h directly needs dma-mapping.h, only two macros
use DMA_MAPPING_ERROR when actually instantiated. Drop the
dma-mapping.h include to reduce include bloat.
Add an explicity <linux/io.h> include to drivers/mailbox/omap-mailbox.c
as that file uses __raw_readl and __raw_writel through a complicated
include chain involving <linux/dma-mapping.h>
Fixes: d52b761e4b1a ("kfifo: add kfifo_dma_out_prepare_mapped()")
Signed-off-by: Christoph Hellwig <hch@....de>
---
Changes since v1:
- improve the commit log
drivers/mailbox/omap-mailbox.c | 1 +
include/linux/kfifo.h | 1 -
samples/kfifo/dma-example.c | 1 +
3 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mailbox/omap-mailbox.c b/drivers/mailbox/omap-mailbox.c
index 6797770474a5..680243751d62 100644
--- a/drivers/mailbox/omap-mailbox.c
+++ b/drivers/mailbox/omap-mailbox.c
@@ -15,6 +15,7 @@
#include <linux/slab.h>
#include <linux/kfifo.h>
#include <linux/err.h>
+#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
diff --git a/include/linux/kfifo.h b/include/linux/kfifo.h
index 564868bdce89..fd743d4c4b4b 100644
--- a/include/linux/kfifo.h
+++ b/include/linux/kfifo.h
@@ -37,7 +37,6 @@
*/
#include <linux/array_size.h>
-#include <linux/dma-mapping.h>
#include <linux/spinlock.h>
#include <linux/stddef.h>
#include <linux/types.h>
diff --git a/samples/kfifo/dma-example.c b/samples/kfifo/dma-example.c
index 48df719dac8c..8076ac410161 100644
--- a/samples/kfifo/dma-example.c
+++ b/samples/kfifo/dma-example.c
@@ -9,6 +9,7 @@
#include <linux/kfifo.h>
#include <linux/module.h>
#include <linux/scatterlist.h>
+#include <linux/dma-mapping.h>
/*
* This module shows how to handle fifo dma operations.
--
2.45.2
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