linux-kernel - [PATCH] pci-iommu_table.c: quiet sparse noise about plain integer as NULL pointer

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Date:	Fri, 9 Sep 2011 14:58:52 -0700
From:	H Hartley Sweeten <hartleys@...ionengravers.com>
To:	Linux Kernel <linux-kernel@...r.kernel.org>
CC:	<x86@...nel.org>, <tglx@...utronix.de>, <mingo@...hat.com>,
	<hpa@...or.com>, <joe@...ches.com>, <joerg.roedel@....com>
Subject: [PATCH] pci-iommu_table.c: quiet sparse noise about plain integer as NULL pointer

x->depend is an initcall_t, NULL should be used to zero it, not 0.  This
quiets the following sparse noise:

warning: Using plain integer as NULL pointer

Signed-off-by: H Hartley Sweeten <hsweeten@...ionengravers.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: "H. Peter Anvin" <hpa@...or.com>
Cc: Joe Perches <joe@...ches.com>
Cc: Joerg Roedel <joerg.roedel@....com>


---

diff --git a/arch/x86/kernel/pci-iommu_table.c b/arch/x86/kernel/pci-iommu_table.c
index 35ccf75..75c3c40 100644
--- a/arch/x86/kernel/pci-iommu_table.c
+++ b/arch/x86/kernel/pci-iommu_table.c
@@ -59,7 +59,7 @@ 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;
 		}
 	}
 
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