Dec 19 2009

drivers/dma: drop unnecesary memset 

Author: Julia Lawall <julia@diku.dk>

memset of 0 is not needed after kzalloc

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// 
@@
expression x;
statement S;
@@

x = kzalloc(...);
if (x == NULL) S
... when != x
-memset(x,0,...);// 

Signed-off-by: Julia Lawall 
Signed-off-by: Dan Williams 

---
 drivers/dma/dw_dmac.c | 2 --
 1 file changed, 2 deletions(-)
 
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index 2eea823..53bb3ca 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1270,8 +1270,6 @@ static int __init dw_probe(struct platform_device *pdev)
 		goto err_kfree;
 	}
 
-	memset(dw, 0, sizeof *dw);
-
 	dw->regs = ioremap(io->start, DW_REGLEN);
 	if (!dw->regs) {
 		err = -ENOMEM;

qlambert