From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 3/5] i2c: Add support for dynamic i2c bus numbers
Date: Mon, 20 May 2013 22:11:22 +0200 [thread overview]
Message-ID: <1369080684-11138-4-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1369080684-11138-1-git-send-email-s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/i2c/i2c.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/drivers/i2c/i2c.c b/drivers/i2c/i2c.c
index 53a11fe..ddf0082 100644
--- a/drivers/i2c/i2c.c
+++ b/drivers/i2c/i2c.c
@@ -384,8 +384,17 @@ int i2c_add_numbered_adapter(struct i2c_adapter *adapter)
{
int ret;
- if (i2c_get_adapter(adapter->nr))
- return -EBUSY;
+ if (adapter->nr < 0) {
+ int nr;
+
+ for (nr = 0;; nr++)
+ if (!i2c_get_adapter(nr))
+ break;
+ adapter->nr = nr;
+ } else {
+ if (i2c_get_adapter(adapter->nr))
+ return -EBUSY;
+ }
adapter->dev.id = adapter->nr;
strcpy(adapter->dev.name, "i2c");
--
1.8.2.rc2
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next prev parent reply other threads:[~2013-05-20 20:11 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-20 20:11 Sascha Hauer
2013-05-20 20:11 ` [PATCH 1/5] i2c: Add missing result check Sascha Hauer
2013-05-20 20:11 ` [PATCH 2/5] i2c: remove dead code Sascha Hauer
2013-05-20 20:11 ` Sascha Hauer [this message]
2013-05-20 22:27 ` [SPAM] [PATCH 3/5] i2c: Add support for dynamic i2c bus numbers Jean-Christophe PLAGNIOL-VILLARD
2013-05-21 6:49 ` Sascha Hauer
2013-05-20 20:11 ` [PATCH 4/5] i2c: Add devicetree support Sascha Hauer
2013-05-20 20:11 ` [PATCH 5/5] i2c: fsl: Add devicetree probe support Sascha Hauer
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