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x86/iommu: Use NULL instead of 0 

Fixes the following sparse warning:

arch/x86/kernel/pci-iommu_table.c:63:37: warning: Using plain integer as NULL pointer

Signed-off-by: zhong jiang <zhongjiang@huawei.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: <hpa@zytor.com>
Cc: <gregkh@linuxfoundation.org>
Link: https://lkml.kernel.org/r/1532162004-24670-1-git-send-email-zhongjiang@huawei.com
This commit is contained in:
Zhong Jiang 2018-07-21 16:33:24 +08:00 committed by Thomas Gleixner
parent 2397134ce2
commit 0b2c1aec49
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/pci-iommu_table.c
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@ -60,7 +60,7 @@ void __init check_iommu_entries(struct iommu_table_entry *start,
printk(KERN_ERR "CYCLIC DEPENDENCY FOUND! %pS depends on %pS and vice-versa. BREAKING IT.\n",
p->detect, q->detect);
/* Heavy handed way..*/
x->depend = 0;
x->depend = NULL;
}
}