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Diffstat (limited to 'drivers/sh')
-rw-r--r--drivers/sh/intc.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/sh/intc.c b/drivers/sh/intc.c
index 3dd231a643b5..4b1ca9d28353 100644
--- a/drivers/sh/intc.c
+++ b/drivers/sh/intc.c
@@ -77,7 +77,7 @@ static unsigned long ack_handle[NR_IRQS];
static inline struct intc_desc_int *get_intc_desc(unsigned int irq)
{
struct irq_chip *chip = get_irq_chip(irq);
- return (void *)((char *)chip - offsetof(struct intc_desc_int, chip));
+ return container_of(chip, struct intc_desc_int, chip);
}
static inline unsigned int set_field(unsigned int value,
@@ -95,16 +95,19 @@ static inline unsigned int set_field(unsigned int value,
static void write_8(unsigned long addr, unsigned long h, unsigned long data)
{
__raw_writeb(set_field(0, data, h), addr);
+ (void)__raw_readb(addr); /* Defeat write posting */
}
static void write_16(unsigned long addr, unsigned long h, unsigned long data)
{
__raw_writew(set_field(0, data, h), addr);
+ (void)__raw_readw(addr); /* Defeat write posting */
}
static void write_32(unsigned long addr, unsigned long h, unsigned long data)
{
__raw_writel(set_field(0, data, h), addr);
+ (void)__raw_readl(addr); /* Defeat write posting */
}
static void modify_8(unsigned long addr, unsigned long h, unsigned long data)
@@ -112,6 +115,7 @@ static void modify_8(unsigned long addr, unsigned long h, unsigned long data)
unsigned long flags;
local_irq_save(flags);
__raw_writeb(set_field(__raw_readb(addr), data, h), addr);
+ (void)__raw_readb(addr); /* Defeat write posting */
local_irq_restore(flags);
}
@@ -120,6 +124,7 @@ static void modify_16(unsigned long addr, unsigned long h, unsigned long data)
unsigned long flags;
local_irq_save(flags);
__raw_writew(set_field(__raw_readw(addr), data, h), addr);
+ (void)__raw_readw(addr); /* Defeat write posting */
local_irq_restore(flags);
}
@@ -128,6 +133,7 @@ static void modify_32(unsigned long addr, unsigned long h, unsigned long data)
unsigned long flags;
local_irq_save(flags);
__raw_writel(set_field(__raw_readl(addr), data, h), addr);
+ (void)__raw_readl(addr); /* Defeat write posting */
local_irq_restore(flags);
}