linux-kernel - [PATCH v2 02/10] spi/pxa2xx: fix warnings when compiling a 64-bit kernel

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Date:	Mon, 21 Jan 2013 11:31:55 +0200
From:	Mika Westerberg <mika.westerberg@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	Grant Likely <grant.likely@...retlab.ca>,
	Eric Miao <eric.y.miao@...il.com>,
	Russell King <linux@....linux.org.uk>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Linus Walleij <linus.walleij@...aro.org>,
	"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
	chao.bi@...el.com,
	Mika Westerberg <mika.westerberg@...ux.intel.com>
Subject: [PATCH v2 02/10] spi/pxa2xx: fix warnings when compiling a 64-bit kernel

Fix following warnings seen when compiling 64-bit:

drivers/spi/spi-pxa2xx.c: In function ‘map_dma_buffers’: drivers/spi/spi-pxa2xx.c:384:7: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
drivers/spi/spi-pxa2xx.c:384:40: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
drivers/spi/spi-pxa2xx.c: In function ‘pxa2xx_spi_probe’:
drivers/spi/spi-pxa2xx.c:1572:34: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
drivers/spi/spi-pxa2xx.c:1572:34: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
drivers/spi/spi-pxa2xx.c:1572:34: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
drivers/spi/spi-pxa2xx.c:1572:27: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]

Signed-off-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
---
 drivers/spi/spi-pxa2xx.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 54097ad..3b831c6 100644
--- a/drivers/spi/spi-pxa2xx.c
+++ b/drivers/spi/spi-pxa2xx.c
@@ -47,7 +47,7 @@ MODULE_ALIAS("platform:pxa2xx-spi");
 
 #define DMA_INT_MASK		(DCSR_ENDINTR | DCSR_STARTINTR | DCSR_BUSERR)
 #define RESET_DMA_CHANNEL	(DCSR_NODESC | DMA_INT_MASK)
-#define IS_DMA_ALIGNED(x)	((((u32)(x)) & 0x07) == 0)
+#define IS_DMA_ALIGNED(x)	IS_ALIGNED((unsigned long)x, DMA_ALIGNMENT)
 #define MAX_DMA_LEN		8191
 #define DMA_ALIGNMENT		8
 
@@ -1576,8 +1576,7 @@ static int pxa2xx_spi_probe(struct platform_device *pdev)
 	master->transfer = transfer;
 
 	drv_data->ssp_type = ssp->type;
-	drv_data->null_dma_buf = (u32 *)ALIGN((u32)(drv_data +
-						sizeof(struct driver_data)), 8);
+	drv_data->null_dma_buf = (u32 *)PTR_ALIGN(&drv_data[1], DMA_ALIGNMENT);
 
 	drv_data->ioaddr = ssp->mmio_base;
 	drv_data->ssdr_physical = ssp->phys_base + SSDR;
-- 
1.7.10.4

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