Messages in this thread Patch in this message | | | Date | Wed, 24 Dec 2008 16:23:10 +0100 (CET) | From | Julia Lawall <> | Subject | [PATCH 1/3] drivers/staging/comedi: Correct use of ! and & |
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From: Julia Lawall <julia@diku.dk>
0x20 has 0 as its rightmost bit and thus !inl(info->plx_regbase + PLX_INTCSR) & 0x20 is always 0. I assume that !(!inl(info->plx_regbase + PLX_INTCSR) & 0x20) was intended.
The semantic patch that makes this change is as follows: (http://www.emn.fr/x-info/coccinelle/)
// <smpl> @@ expression E; constant C; @@ ( !E & !C | - !E & C + !(E & C) ) // </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
--- drivers/staging/comedi/drivers/me4000.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff -u -p a/drivers/staging/comedi/drivers/me4000.c b/drivers/staging/comedi/drivers/me4000.c --- a/drivers/staging/comedi/drivers/me4000.c +++ b/drivers/staging/comedi/drivers/me4000.c @@ -782,7 +782,7 @@ static int xilinx_download(comedi_device /* Wait until /INIT pin is set */ udelay(20); - if (!inl(info->plx_regbase + PLX_INTCSR) & 0x20) { + if (!(inl(info->plx_regbase + PLX_INTCSR) & 0x20)) { printk(KERN_ERR "comedi%d: me4000: xilinx_download(): Can't init Xilinx\n", dev->minor);
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