[PATCH 01/61] Use strcasecmp() rather than strncasecmp() when determining device node compatibility.

[Scott Wood]

The current code assumes "foo-bar" must always be compatible with a node
compatible with "foo", which breaks device trees where this is not so.

The "case" part is also wrong according to Open Firmware, but it's more
likely to have drivers and/or device trees depending on it, and thus
needs to be handled more carefully.

Signed-off-by: Scott Wood <scottwood at freescale.com>
---
 arch/powerpc/kernel/prom.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 37ff99b..0b136a5 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -218,7 +218,7 @@ int __init of_flat_dt_is_compatible(unsigned long node, const char *compat)
 	if (cp == NULL)
 		return 0;
 	while (cplen > 0) {
-		if (strncasecmp(cp, compat, strlen(compat)) == 0)
+		if (strcasecmp(cp, compat) == 0)
 			return 1;
 		l = strlen(cp) + 1;
 		cp += l;
@@ -1099,7 +1099,7 @@ int of_device_is_compatible(const struct device_node *device,
 	if (cp == NULL)
 		return 0;
 	while (cplen > 0) {
-		if (strncasecmp(cp, compat, strlen(compat)) == 0)
+		if (strcasecmp(cp, compat) == 0)
 			return 1;
 		l = strlen(cp) + 1;
 		cp += l;
-- 
1.5.0.3