linux-kernel - [PATCH] Firmware class name collision

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Date:	Mon, 13 Aug 2007 15:11:50 +0200
From:	"Markus Rechberger" <markus.rechberger@....com>
To:	linux-kernel@...r.kernel.org, "Jean Delvare" <khali@...ux-fr.org>,
	"Greg KH" <greg@...ah.com>
Subject: [PATCH] Firmware class name collision

Hi,

following patch fixes the i2c name collision with i2c-dev.

http://mcentral.de/wiki/index.php/Bugtracker#i2c_core_problem

This issue has been experienced with em28xx and saa7133 based devices.
I discussed that problem with Jean Delvare a while ago and he proposed 
to add a prefix to the class name.

http://mcentral.de/~mrec/patches/firmware_class_name_collision.diff

Signed-off-by: Markus Rechberger <markus.rechberger@....com>

index b24efd4..bfc54a1 100644
--- a/drivers/base/firmware_class.c
+++ b/drivers/base/firmware_class.c
@@ -297,8 +297,7 @@ firmware_class_timeout(u_long data)
 
 static inline void fw_setup_device_id(struct device *f_dev, struct 
device *dev)
 {
-       /* XXX warning we should watch out for name collisions */
-       strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE);
+       snprintf(f_dev->bus_id, BUS_ID_SIZE, "fw-%s", dev->bus_id);
 }
 
 static int fw_register_device(struct device **dev_p, const char *fw_name,

Markus


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