From 0d2c9f0517e915ce03a04e91d3207827e0d274a8 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 28 Sep 2012 23:36:10 +0200 Subject: IXP4xx: use __iomem for MMIO The ixp4xx queue manager uses "const struct qmgr_regs __iomem *" as the type for a pointer that is passed to __raw_writel, which is not allowed because of the const-ness. Dropping the 'const' keyword fixes the problem. While we're here, let's also drop the useless type cast. Without this patch, building ixp4xx_defconfig results in: In file included from arch/arm/mach-ixp4xx/ixp4xx_qmgr.c:15:0: arch/arm/mach-ixp4xx/include/mach/qmgr.h: In function 'qmgr_put_entry': arch/arm/mach-ixp4xx/include/mach/qmgr.h:96:2: warning: passing argument 2 of '__raw_writel' discards 'const' qualifier from pointer target type [enabled by default] arch/arm/include/asm/io.h:88:91: note: expected 'volatile void *' but argument is of type 'const u32 *' In file included from drivers/net/ethernet/xscale/ixp4xx_eth.c:41:0: arch/arm/mach-ixp4xx/include/mach/qmgr.h: In function 'qmgr_put_entry': arch/arm/mach-ixp4xx/include/mach/qmgr.h:96:2: warning: passing argument 2 of '__raw_writel' discards 'const' qualifier from pointer target type [enabled by default] arch/arm/include/asm/io.h:88:91: note: expected 'volatile void *' but argument is of type 'const u32 *' arch/arm/mach-ixp4xx/ixp4xx_qmgr.c: In function 'qmgr_set_irq': arch/arm/mach-ixp4xx/ixp4xx_qmgr.c:41:9: warning: passing argument 2 of '__raw_writel' discards 'const' qualifier from pointer target type [enabled by default] arch/arm/include/asm/io.h:88:91: note: expected 'volatile void *' but argument is of type 'const u32 *' Signed-off-by: Arnd Bergmann Signed-off-by: Krzysztof Hałasa --- arch/arm/mach-ixp4xx/include/mach/qmgr.h | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) (limited to 'arch/arm/mach-ixp4xx/include') diff --git a/arch/arm/mach-ixp4xx/include/mach/qmgr.h b/arch/arm/mach-ixp4xx/include/mach/qmgr.h index 0a88d3b8e806..4de8da536dbb 100644 --- a/arch/arm/mach-ixp4xx/include/mach/qmgr.h +++ b/arch/arm/mach-ixp4xx/include/mach/qmgr.h @@ -86,7 +86,7 @@ void qmgr_release_queue(unsigned int queue); static inline void qmgr_put_entry(unsigned int queue, u32 val) { - const struct qmgr_regs __iomem *qmgr_regs = (void __iomem *)IXP4XX_QMGR_BASE_VIRT; + struct qmgr_regs __iomem *qmgr_regs = IXP4XX_QMGR_BASE_VIRT; #if DEBUG_QMGR BUG_ON(!qmgr_queue_descs[queue]); /* not yet requested */ @@ -99,7 +99,7 @@ static inline void qmgr_put_entry(unsigned int queue, u32 val) static inline u32 qmgr_get_entry(unsigned int queue) { u32 val; - const struct qmgr_regs __iomem *qmgr_regs = (void __iomem *)IXP4XX_QMGR_BASE_VIRT; + const struct qmgr_regs __iomem *qmgr_regs = IXP4XX_QMGR_BASE_VIRT; val = __raw_readl(&qmgr_regs->acc[queue][0]); #if DEBUG_QMGR BUG_ON(!qmgr_queue_descs[queue]); /* not yet requested */ @@ -112,14 +112,14 @@ static inline u32 qmgr_get_entry(unsigned int queue) static inline int __qmgr_get_stat1(unsigned int queue) { - const struct qmgr_regs __iomem *qmgr_regs = (void __iomem *)IXP4XX_QMGR_BASE_VIRT; + const struct qmgr_regs __iomem *qmgr_regs = IXP4XX_QMGR_BASE_VIRT; return (__raw_readl(&qmgr_regs->stat1[queue >> 3]) >> ((queue & 7) << 2)) & 0xF; } static inline int __qmgr_get_stat2(unsigned int queue) { - const struct qmgr_regs __iomem *qmgr_regs = (void __iomem *)IXP4XX_QMGR_BASE_VIRT; + const struct qmgr_regs __iomem *qmgr_regs = IXP4XX_QMGR_BASE_VIRT; BUG_ON(queue >= HALF_QUEUES); return (__raw_readl(&qmgr_regs->stat2[queue >> 4]) >> ((queue & 0xF) << 1)) & 0x3; @@ -145,7 +145,7 @@ static inline int qmgr_stat_empty(unsigned int queue) */ static inline int qmgr_stat_below_low_watermark(unsigned int queue) { - const struct qmgr_regs __iomem *qmgr_regs = (void __iomem *)IXP4XX_QMGR_BASE_VIRT; + const struct qmgr_regs __iomem *qmgr_regs = IXP4XX_QMGR_BASE_VIRT; if (queue >= HALF_QUEUES) return (__raw_readl(&qmgr_regs->statne_h) >> (queue - HALF_QUEUES)) & 0x01; @@ -172,7 +172,7 @@ static inline int qmgr_stat_above_high_watermark(unsigned int queue) */ static inline int qmgr_stat_full(unsigned int queue) { - const struct qmgr_regs __iomem *qmgr_regs = (void __iomem *)IXP4XX_QMGR_BASE_VIRT; + const struct qmgr_regs __iomem *qmgr_regs = IXP4XX_QMGR_BASE_VIRT; if (queue >= HALF_QUEUES) return (__raw_readl(&qmgr_regs->statf_h) >> (queue - HALF_QUEUES)) & 0x01; -- cgit v1.2.3