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Subject[PATCH 29/39] dmaengine: ste_dma40: Use the BIT macro to replace ugly '(1 << x)'s
Date
The aim is to make the code that little more readable.

Acked-by: Vinod Koul <vnod.koul@intel.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
drivers/dma/ste_dma40.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 6ed7757..08bc58a 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -54,8 +54,8 @@
#define MAX_LCLA_ALLOC_ATTEMPTS 256

/* Bit markings for allocation map */
-#define D40_ALLOC_FREE (1 << 31)
-#define D40_ALLOC_PHY (1 << 30)
+#define D40_ALLOC_FREE BIT(31)
+#define D40_ALLOC_PHY BIT(30)
#define D40_ALLOC_LOG_FREE 0

/* Reserved event lines for memcpy only. */
@@ -1738,7 +1738,7 @@ static irqreturn_t d40_handle_interrupt(int irq, void *data)
}

/* ACK interrupt */
- writel(1 << idx, base->virtbase + il[row].clr);
+ writel(BIT(idx), base->virtbase + il[row].clr);

spin_lock(&d40c->lock);

@@ -1828,8 +1828,8 @@ static bool d40_alloc_mask_set(struct d40_phy_res *phy,
if (phy->allocated_src == D40_ALLOC_FREE)
phy->allocated_src = D40_ALLOC_LOG_FREE;

- if (!(phy->allocated_src & (1 << log_event_line))) {
- phy->allocated_src |= 1 << log_event_line;
+ if (!(phy->allocated_src & BIT(log_event_line))) {
+ phy->allocated_src |= BIT(log_event_line);
goto found;
} else
goto not_found;
@@ -1840,8 +1840,8 @@ static bool d40_alloc_mask_set(struct d40_phy_res *phy,
if (phy->allocated_dst == D40_ALLOC_FREE)
phy->allocated_dst = D40_ALLOC_LOG_FREE;

- if (!(phy->allocated_dst & (1 << log_event_line))) {
- phy->allocated_dst |= 1 << log_event_line;
+ if (!(phy->allocated_dst & BIT(log_event_line))) {
+ phy->allocated_dst |= BIT(log_event_line);
goto found;
} else
goto not_found;
@@ -1871,11 +1871,11 @@ static bool d40_alloc_mask_free(struct d40_phy_res *phy, bool is_src,

/* Logical channel */
if (is_src) {
- phy->allocated_src &= ~(1 << log_event_line);
+ phy->allocated_src &= ~BIT(log_event_line);
if (phy->allocated_src == D40_ALLOC_LOG_FREE)
phy->allocated_src = D40_ALLOC_FREE;
} else {
- phy->allocated_dst &= ~(1 << log_event_line);
+ phy->allocated_dst &= ~BIT(log_event_line);
if (phy->allocated_dst == D40_ALLOC_LOG_FREE)
phy->allocated_dst = D40_ALLOC_FREE;
}
@@ -2356,7 +2356,7 @@ static void __d40_set_prio_rt(struct d40_chan *d40c, int dev_type, bool src)
u32 rtreg;
u32 event = D40_TYPE_TO_EVENT(dev_type);
u32 group = D40_TYPE_TO_GROUP(dev_type);
- u32 bit = 1 << event;
+ u32 bit = BIT(event);
u32 prioreg;
struct d40_gen_dmac *dmac = &d40c->base->gen_dmac;

--
1.7.10.4


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