From 5345862e9af02ce3780639bfe350ed2da9f8af13 Mon Sep 17 00:00:00 2001 From: Florian Fainelli Date: Tue, 19 Sep 2017 10:46:47 -0700 Subject: [PATCH] net: dsa: b53: Use a macro to define I/O operations Instead of repeating the same pattern: acquire mutex, read/write, release mutex, define a macro: b53_build_op() which takes the type (read|write), I/O size, and value (scalar or pointer). This helps with fixing bugs that could exist (e.g: missing barrier, lock etc.). Reviewed-by: Vivien Didelot Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller --- drivers/net/dsa/b53/b53_priv.h | 133 +++++++---------------------------------- 1 file changed, 22 insertions(+), 111 deletions(-) diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h index 7528b22..5bebe97 100644 --- a/drivers/net/dsa/b53/b53_priv.h +++ b/drivers/net/dsa/b53/b53_priv.h @@ -199,119 +199,30 @@ static inline void b53_switch_remove(struct b53_device *dev) dsa_unregister_switch(dev->ds); } -static inline int b53_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->read8(dev, page, reg, val); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_read16(struct b53_device *dev, u8 page, u8 reg, u16 *val) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->read16(dev, page, reg, val); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_read32(struct b53_device *dev, u8 page, u8 reg, u32 *val) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->read32(dev, page, reg, val); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_read48(struct b53_device *dev, u8 page, u8 reg, u64 *val) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->read48(dev, page, reg, val); - mutex_unlock(&dev->reg_mutex); - - return ret; +#define b53_build_op(type_op_size, val_type) \ +static inline int b53_##type_op_size(struct b53_device *dev, u8 page, \ + u8 reg, val_type val) \ +{ \ + int ret; \ + \ + mutex_lock(&dev->reg_mutex); \ + ret = dev->ops->type_op_size(dev, page, reg, val); \ + mutex_unlock(&dev->reg_mutex); \ + \ + return ret; \ } -static inline int b53_read64(struct b53_device *dev, u8 page, u8 reg, u64 *val) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->read64(dev, page, reg, val); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_write8(struct b53_device *dev, u8 page, u8 reg, u8 value) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->write8(dev, page, reg, value); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_write16(struct b53_device *dev, u8 page, u8 reg, - u16 value) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->write16(dev, page, reg, value); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_write32(struct b53_device *dev, u8 page, u8 reg, - u32 value) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->write32(dev, page, reg, value); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_write48(struct b53_device *dev, u8 page, u8 reg, - u64 value) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->write48(dev, page, reg, value); - mutex_unlock(&dev->reg_mutex); - - return ret; -} - -static inline int b53_write64(struct b53_device *dev, u8 page, u8 reg, - u64 value) -{ - int ret; - - mutex_lock(&dev->reg_mutex); - ret = dev->ops->write64(dev, page, reg, value); - mutex_unlock(&dev->reg_mutex); - - return ret; -} +b53_build_op(read8, u8 *); +b53_build_op(read16, u16 *); +b53_build_op(read32, u32 *); +b53_build_op(read48, u64 *); +b53_build_op(read64, u64 *); + +b53_build_op(write8, u8); +b53_build_op(write16, u16); +b53_build_op(write32, u32); +b53_build_op(write48, u64); +b53_build_op(write64, u64); struct b53_arl_entry { u8 port; -- 2.7.4