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authorGrant Likely <grant.likely@secretlab.ca>2008-10-08 05:05:29 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2008-10-10 15:55:18 +1100
commit58f467ce1476f5b2a347cee3a32275b737fbd667 (patch)
tree3a1b1329c934326686645a7a73feac4f2a0c57b3 /drivers/of/base.c
parent41c2e949cb7b80c5a6247c7df97759953b0f71b5 (diff)
powerpc/of-bindings: Don't support linux,<modalias> "compatible" values
Compatible property values in the form linux,<modalias> is not documented anywhere and using it leaks Linux implementation details into the device tree data (which is bad). Remove support for compatible values of this form. If any platforms exist which depended on this code (and I don't know of any), then they can be fixed up by adding legacy translations to the lookup table in this file. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/of/base.c')
-rw-r--r--drivers/of/base.c25
1 files changed, 5 insertions, 20 deletions
diff --git a/drivers/of/base.c b/drivers/of/base.c
index ad8ac1a8af2..cd1ce7ab851 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -420,13 +420,12 @@ static struct of_modalias_table of_modalias_table[] = {
* @len: Length of modalias value
*
* Based on the value of the compatible property, this routine will determine
- * an appropriate modalias value for a particular device tree node. Three
- * separate methods are used to derive a modalias value.
+ * an appropriate modalias value for a particular device tree node. Two
+ * separate methods are attempted to derive a modalias value.
*
* First method is to lookup the compatible value in of_modalias_table.
- * Second is to look for a "linux,<modalias>" entry in the compatible list
- * and used that for modalias. Third is to strip off the manufacturer
- * prefix from the first compatible entry and use the remainder as modalias
+ * Second is to strip off the manufacturer prefix from the first
+ * compatible entry and use the remainder as modalias
*
* This routine returns 0 on success
*/
@@ -449,21 +448,7 @@ int of_modalias_node(struct device_node *node, char *modalias, int len)
if (!compatible)
return -ENODEV;
- /* 2. search for linux,<modalias> entry */
- p = compatible;
- while (cplen > 0) {
- if (!strncmp(p, "linux,", 6)) {
- p += 6;
- strlcpy(modalias, p, len);
- return 0;
- }
-
- i = strlen(p) + 1;
- p += i;
- cplen -= i;
- }
-
- /* 3. take first compatible entry and strip manufacturer */
+ /* 2. take first compatible entry and strip manufacturer */
p = strchr(compatible, ',');
if (!p)
return -ENODEV;