linux-kernel - Re: [PATCH v4 0/4] Bugfix for of_match

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Date:	Thu, 20 Feb 2014 18:12:40 +0800
From:	Kevin Hao <haokexin@...il.com>
To:	Sachin Kamat <sachin.kamat@...aro.org>
Cc:	Grant Likely <grant.likely@...aro.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>
Subject: Re: [PATCH v4 0/4] Bugfix for of_match_node ordering

On Thu, Feb 20, 2014 at 02:09:08PM +0530, Sachin Kamat wrote:
> Hi Grant,
> 
> I observe the following boot failure with today's (next-20140220) linux-next
> tree on Exynos based boards with the default exynos_defconfig.

Does this help?

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 8a27fc907ab6..9cc893530b9a 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -381,12 +381,16 @@ static int __of_device_is_compatible(const struct device_node *device,
 
 	/* Compatible match has highest priority */
 	if (compat && compat[0]) {
-		of_property_for_each_string(device, "compatible", prop, cp) {
+		prop = __of_find_property(device, "compatible", NULL);
+		if (!prop)
+			return 0;
+
+		for (cp = of_prop_next_string(prop, NULL); cp;
+				cp = of_prop_next_string(prop, cp), index++) {
 			if (of_compat_cmp(cp, compat, strlen(compat)) == 0) {
 				score = INT_MAX/2 - (index << 2);
 				break;
 			}
-			index++;
 		}
 		if (!score)
 			return 0;


Thanks,
Kevin

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