This is a note to let you know that I've just added the patch titled
drivers/of: Add empty ranges quirk for PA-Semi
to the 3.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drivers-of-add-empty-ranges-quirk-for-pa-semi.patch
and it can be found in the queue-3.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 41d9489319f28f06cf51731131bc353d5a6bce59 Mon Sep 17 00:00:00 2001
From: Benjamin Herrenschmidt <[email protected]>
Date: Mon, 23 Mar 2015 14:16:38 +1100
Subject: drivers/of: Add empty ranges quirk for PA-Semi
From: Benjamin Herrenschmidt <[email protected]>
commit 41d9489319f28f06cf51731131bc353d5a6bce59 upstream.
The "sdc" node is missing the ranges property, it needs to be treated
as having an empty one otherwise translation fails for its children.
Fixes 746c9e9f92dd, "of/base: Fix PowerPC address parsing hack"
Tested-by: Steven Rostedt <[email protected]>
Signed-off-by: Benjamin Herrenschmidt <[email protected]>
Signed-off-by: Grant Likely <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/of/address.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
--- a/drivers/of/address.c
+++ b/drivers/of/address.c
@@ -450,12 +450,17 @@ static struct of_bus *of_match_bus(struc
return NULL;
}
-static int of_empty_ranges_quirk(void)
+static int of_empty_ranges_quirk(struct device_node *np)
{
if (IS_ENABLED(CONFIG_PPC)) {
- /* To save cycles, we cache the result */
+ /* To save cycles, we cache the result for global "Mac" setting
*/
static int quirk_state = -1;
+ /* PA-SEMI sdc DT bug */
+ if (of_device_is_compatible(np, "1682m-sdc"))
+ return true;
+
+ /* Make quirk cached */
if (quirk_state < 0)
quirk_state =
of_machine_is_compatible("Power Macintosh") ||
@@ -490,7 +495,7 @@ static int of_translate_one(struct devic
* This code is only enabled on powerpc. --gcl
*/
ranges = of_get_property(parent, rprop, &rlen);
- if (ranges == NULL && !of_empty_ranges_quirk()) {
+ if (ranges == NULL && !of_empty_ranges_quirk(parent)) {
pr_debug("OF: no ranges; cannot translate\n");
return 1;
}
Patches currently in stable-queue which might be from [email protected]
are
queue-3.19/drivers-of-add-empty-ranges-quirk-for-pa-semi.patch
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