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authorGrant Likely <grant.likely@secretlab.ca>2010-03-18 07:30:31 -0600
committerGrant Likely <grant.likely@secretlab.ca>2010-03-18 07:30:31 -0600
commit1976152fd8e706135deed6cf333e347c08416056 (patch)
treec6957ba400864cedef592969b520bbb21510e3c1
parentacc6a0935e5958ad1a1b99a1c6f44a52264bedf0 (diff)
of: Fix comparison of "compatible" properties
Commit 7c7b60cb87547b1664a4385c187f029bf514a737 "of: put default string compare and #a/s-cell values into common header" Breaks various things on powerpc due to using strncasecmp instead of strcasecmp for comparing against "compatible" strings. This causes things like the 4xx PCI code to fail miserably due to the partial matches in code like this: for_each_compatible_node(np, NULL, "ibm,plb-pcix") ppc4xx_probe_pcix_bridge(np); for_each_compatible_node(np, NULL, "ibm,plb-pci") ppc4xx_probe_pci_bridge(np); It's not quite right to do partial name match. Entries in a compatible list are meant to be matched whole. If a device is compatible with both "foo" and "foo1", then the device should have both strings in its "compatible" property. This patch reverts powerpc and microblaze us to use strcasecmp. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> (for patch description) Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Michal Simek <michal.simek@petalogix.com>
-rw-r--r--include/linux/of.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/linux/of.h b/include/linux/of.h
index f6d9cbc39c9c..a367e19bb3af 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -127,7 +127,7 @@ static inline unsigned long of_read_ulong(const __be32 *cell, int size)
/* Default string compare functions, Allow arch asm/prom.h to override */
#if !defined(of_compat_cmp)
-#define of_compat_cmp(s1, s2, l) strncasecmp((s1), (s2), (l))
+#define of_compat_cmp(s1, s2, l) strcasecmp((s1), (s2))
#define of_prop_cmp(s1, s2) strcmp((s1), (s2))
#define of_node_cmp(s1, s2) strcasecmp((s1), (s2))
#endif