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[SCSI] aacraid: resolve compiler warnings using ptrdiff_t

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Unsigned long is not always the same size as a pointer, namely on 32 bit
systems with 64 bit address space. Ptrdiff_t is the same size as a
pointer in all configurations. By using ptrdiff_t we can mitigate the
warning messages on these configurations. There should be no side
effects of this patch.

Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Salyzyn, Mark
2007-03-27 15:07:28 -04:00
committed by James Bottomley
parent 10c9a017f1
commit 4dfb7cbef8
3 changed files with 5 additions and 6 deletions
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4
drivers/scsi/aacraid/comminit.c
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@@ -5,7 +5,7 @@
* based on the old aacraid driver that is..
* Adaptec aacraid device driver for Linux.
*
* Copyright (c) 2000 Adaptec, Inc. (aacraid@adaptec.com)
* Copyright (c) 2000-2007 Adaptec, Inc. (aacraid@adaptec.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -110,7 +110,7 @@ static int aac_alloc_comm(struct aac_dev *dev, void **commaddr, unsigned long co
/*
* Align the beginning of Headers to commalign
*/
align = (commalign - ((unsigned long)(base) & (commalign - 1)));
align = (commalign - ((ptrdiff_t)(base) & (commalign - 1)));
base = base + align;
phys = phys + align;
/*