werror: fix pci calgary

Fix an integer comparison always false warning in the PCI Calgary 64 driver.

A u8 is being compared to something that's 512 by default, resulting in the
following warning:

arch/x86/kernel/pci-calgary_64.c:1285: warning: comparison is always false due to limited range of data type

This was introduced by patch b34e90b8f0f30151349134f87b5dc6ef75a5218c.

Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/pci-calgary_64.c b/arch/x86/kernel/pci-calgary_64.c
index 218d783..363a74e 100644 (file)
--- a/arch/x86/kernel/pci-calgary_64.c
+++ b/arch/x86/kernel/pci-calgary_64.c
@@ -1269,13 +1269,15 @@ static inline int __init determine_tce_table_size(u64 ram)
 static int __init build_detail_arrays(void)
 {
        unsigned long ptr;
-       int i, scal_detail_size, rio_detail_size;
+       unsigned numnodes, i;
+       int scal_detail_size, rio_detail_size;
 
-       if (rio_table_hdr->num_scal_dev > MAX_NUMNODES){
+       numnodes = rio_table_hdr->num_scal_dev;
+       if (numnodes > MAX_NUMNODES){
                printk(KERN_WARNING
                        "Calgary: MAX_NUMNODES too low! Defined as %d, "
                        "but system has %d nodes.\n",
-                       MAX_NUMNODES, rio_table_hdr->num_scal_dev);
+                       MAX_NUMNODES, numnodes);
                return -ENODEV;
        }
 
@@ -1296,8 +1298,7 @@ static int __init build_detail_arrays(void)
        }
 
        ptr = ((unsigned long)rio_table_hdr) + 3;
-       for (i = 0; i < rio_table_hdr->num_scal_dev;
-                   i++, ptr += scal_detail_size)
+       for (i = 0; i < numnodes; i++, ptr += scal_detail_size)
                scal_devs[i] = (struct scal_detail *)ptr;
 
        for (i = 0; i < rio_table_hdr->num_rio_dev;