linux-kernel - [PATCH v3 04/14] spi: pxa2xx: Replace header inclusions by forward declarations

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Date:   Mon, 10 May 2021 15:41:24 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org
Cc:     Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>
Subject: [PATCH v3 04/14] spi: pxa2xx: Replace header inclusions by forward declarations

When the data structure is only referred by pointer, compiler may not need
to see the contents of the data type. Thus, we may replace header inclusions
by respective forward declarations. Due to above add missed headers as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/spi/spi-pxa2xx-dma.c   |  4 ++--
 drivers/spi/spi-pxa2xx-pci.c   |  1 +
 drivers/spi/spi-pxa2xx.c       |  2 ++
 drivers/spi/spi-pxa2xx.h       | 18 ++++++++++--------
 include/linux/spi/pxa2xx_spi.h |  2 ++
 5 files changed, 17 insertions(+), 10 deletions(-)

diff --git a/drivers/spi/spi-pxa2xx-dma.c b/drivers/spi/spi-pxa2xx-dma.c
index 2e4a49567146..e00dbadd39ec 100644
--- a/drivers/spi/spi-pxa2xx-dma.c
+++ b/drivers/spi/spi-pxa2xx-dma.c
@@ -9,11 +9,11 @@
 #include <linux/device.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
-#include <linux/pxa2xx_ssp.h>
 #include <linux/scatterlist.h>
 #include <linux/sizes.h>
-#include <linux/spi/spi.h>
+
 #include <linux/spi/pxa2xx_spi.h>
+#include <linux/spi/spi.h>
 
 #include "spi-pxa2xx.h"
 
diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c
index f588fad77fc0..a259be12d326 100644
--- a/drivers/spi/spi-pxa2xx-pci.c
+++ b/drivers/spi/spi-pxa2xx-pci.c
@@ -8,6 +8,7 @@
 #include <linux/module.h>
 #include <linux/pci.h>
 #include <linux/platform_device.h>
+
 #include <linux/spi/pxa2xx_spi.h>
 
 #include <linux/dmaengine.h>
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 0f3f7d725937..1d4c7f4217ed 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -9,6 +9,7 @@
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/device.h>
+#include <linux/dmaengine.h>
 #include <linux/err.h>
 #include <linux/errno.h>
 #include <linux/gpio/consumer.h>
@@ -25,6 +26,7 @@
 #include <linux/pm_runtime.h>
 #include <linux/property.h>
 #include <linux/slab.h>
+
 #include <linux/spi/pxa2xx_spi.h>
 #include <linux/spi/spi.h>
 
diff --git a/drivers/spi/spi-pxa2xx.h b/drivers/spi/spi-pxa2xx.h
index 6724d7e056ce..739e264feaa6 100644
--- a/drivers/spi/spi-pxa2xx.h
+++ b/drivers/spi/spi-pxa2xx.h
@@ -7,16 +7,18 @@
 #ifndef SPI_PXA2XX_H
 #define SPI_PXA2XX_H
 
-#include <linux/atomic.h>
-#include <linux/dmaengine.h>
-#include <linux/errno.h>
-#include <linux/io.h>
 #include <linux/interrupt.h>
-#include <linux/pxa2xx_ssp.h>
-#include <linux/scatterlist.h>
+#include <linux/io.h>
+#include <linux/types.h>
 #include <linux/sizes.h>
-#include <linux/spi/spi.h>
-#include <linux/spi/pxa2xx_spi.h>
+
+#include <linux/pxa2xx_ssp.h>
+
+struct gpio_desc;
+struct pxa2xx_spi_controller;
+struct spi_controller;
+struct spi_device;
+struct spi_transfer;
 
 struct driver_data {
 	/* SSP Info */
diff --git a/include/linux/spi/pxa2xx_spi.h b/include/linux/spi/pxa2xx_spi.h
index 31f00c7f4f59..1e0e2f136319 100644
--- a/include/linux/spi/pxa2xx_spi.h
+++ b/include/linux/spi/pxa2xx_spi.h
@@ -5,6 +5,8 @@
 #ifndef __linux_pxa2xx_spi_h
 #define __linux_pxa2xx_spi_h
 
+#include <linux/types.h>
+
 #include <linux/pxa2xx_ssp.h>
 
 #define PXA2XX_CS_ASSERT (0x01)
-- 
2.30.2