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dmaengine: ste_dma40: Remove home-brew MAX() macro

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The current implementation of the DMA40's local MAX() macro evaluates
its arguments more times than is necessary and it not type checked.
This patch strips replaces it with a new, more efficient constant.

Cc: Dan Williams <djbw@fb.com>
Cc: Per Forlin <per.forlin@stericsson.com>
Cc: Rabin Vincent <rabin@rab.in>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Reported-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Lee Jones 2013-05-03 15:31:58 +01:00 committed by Linus Walleij
parent df7c9bbc24
commit 84b3da1498
1 changed files with 4 additions and 3 deletions
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7
drivers/dma/ste_dma40.c
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@ -53,8 +53,6 @@
#define D40_ALLOC_PHY (1 << 30)
#define D40_ALLOC_LOG_FREE 0
#define MAX(a, b) (((a) < (b)) ? (b) : (a))
/* Reserved event lines for memcpy only. */
#define DB8500_DMA_MEMCPY_EV_0 51
#define DB8500_DMA_MEMCPY_EV_1 56
@ -216,6 +214,9 @@ static u32 d40_backup_regs_chan[] = {
D40_CHAN_REG_SDLNK,
};
#define BACKUP_REGS_SZ_MAX ((BACKUP_REGS_SZ_V4A > BACKUP_REGS_SZ_V4B) ? \
BACKUP_REGS_SZ_V4A : BACKUP_REGS_SZ_V4B)
/**
* struct d40_interrupt_lookup - lookup table for interrupt handler
*
@ -579,7 +580,7 @@ struct d40_base {
resource_size_t lcpa_size;
struct kmem_cache *desc_slab;
u32 reg_val_backup[BACKUP_REGS_SZ];
u32 reg_val_backup_v4[MAX(BACKUP_REGS_SZ_V4A, BACKUP_REGS_SZ_V4B)];
u32 reg_val_backup_v4[BACKUP_REGS_SZ_MAX];
u32 *reg_val_backup_chan;
u16 gcc_pwr_off_mask;
bool initialized;