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From: Andreas Larsson <andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
To: Grant Likely <grant.likely-s3s/WqlpOiPyB63q8FvJNQ@public.gmane.org>
Cc: software-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org,
	Linus Walleij
	<linus.walleij-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org>,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>,
	spi-devel-general-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
	devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org
Subject: [PATCH v2 1/6] of: Return -EEXIST from of_parse_phandle_with_args for holes in phandle list
Date: Tue, 29 Jan 2013 15:53:38 +0100	[thread overview]
Message-ID: <1359471223-4794-2-git-send-email-andreas@gaisler.com> (raw)
In-Reply-To: <1359471223-4794-1-git-send-email-andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>

Return value for an empty phandle was -EEXIST before commit 15c9a0ac, that
changed the return value in this case to -ENOENT. However, of_gpio_named_count
relies upon the return value to be -EEXIST and relies upon being able to
distinguish this case from the case of no list at all which also returns
-ENOENT.

Also change the of selftest to expect -EEXIST in this case.

Signed-off-by: Andreas Larsson <andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
---

I have only compile tested the selftest, not having appropriate hardware around for running it.

 drivers/of/base.c     |    4 ++--
 drivers/of/selftest.c |    2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/of/base.c b/drivers/of/base.c
index 2390ddb..986afd7 100644
--- a/drivers/of/base.c
+++ b/drivers/of/base.c
@@ -1083,11 +1083,11 @@ int of_parse_phandle_with_args(const struct device_node *np, const char *list_na
 		 * All of the error cases above bail out of the loop, so at
 		 * this point, the parsing is successful. If the requested
 		 * index matches, then fill the out_args structure and return,
-		 * or return -ENOENT for an empty entry.
+		 * or return -EEXIST for an empty entry.
 		 */
 		if (cur_index == index) {
 			if (!phandle)
-				return -ENOENT;
+				return -EEXIST;
 
 			if (out_args) {
 				int i;
diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c
index f24ffd7..b1c2ae9 100644
--- a/drivers/of/selftest.c
+++ b/drivers/of/selftest.c
@@ -54,7 +54,7 @@ static void __init of_selftest_parse_phandle_with_args(void)
 			passed &= (args.args[1] == 0);
 			break;
 		case 2:
-			passed &= (rc == -ENOENT);
+			passed &= (rc == -EEXIST);
 			break;
 		case 3:
 			passed &= !rc;
-- 
1.7.0.4


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  parent reply	other threads:[~2013-01-29 14:53 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-01-29 14:53 [PATCH v2 0/6] of, of_gpio, of_spi: Bugfix and improve of_parse_phandle_with_args, of_gpio_named_count and of_spi_register_master Andreas Larsson
     [not found] ` <1359471223-4794-1-git-send-email-andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
2013-01-29 14:53   ` Andreas Larsson [this message]
2013-01-29 14:53   ` [PATCH v2 2/6] of: Return -ENXIO from of_parse_phandle_with_args for too large index and return errors from of_gpio_named_count Andreas Larsson
     [not found]     ` <1359471223-4794-3-git-send-email-andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
2013-02-01  9:37       ` Linus Walleij
2013-02-10 23:56     ` Grant Likely
2013-01-29 14:53   ` [PATCH v2 3/6] of_spi: Initialize cs_gpios properly Andreas Larsson
2013-02-11  0:00     ` Grant Likely
2013-01-29 14:53   ` [PATCH v2 4/6] of_spi: Document cs_gpios and cs_gpio in kernel-doc Andreas Larsson
     [not found]     ` <1359471223-4794-5-git-send-email-andreas-FkzTOoA/JUlBDgjK7y7TUQ@public.gmane.org>
2013-02-11  0:06       ` Grant Likely
2013-01-29 14:53 ` [PATCH v2 5/6] of_spi: Add fetching of of_gpio flags to of_spi_register_master Andreas Larsson
2013-02-11  0:22   ` Grant Likely
2013-02-12  9:39     ` Andreas Larsson
2013-02-12 17:09       ` Grant Likely
2013-01-29 14:53 ` [PATCH v2 6/6] of_spi: Initialize cs_gpios and cs_gpio with -EEXIST Andreas Larsson
2013-02-11  0:23   ` Grant Likely
2013-02-12  9:46     ` Andreas Larsson
2013-02-12 18:01       ` Grant Likely

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