linux-kernel - [PATCH 15/28] driver core: Don't stop probing on ->probe errors.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1170894670676-git-send-email-greg@kroah.com>
Date:	Wed,  7 Feb 2007 16:30:03 -0800
From:	Greg KH <greg@...ah.com>
To:	linux-kernel@...r.kernel.org
Cc:	Cornelia Huck <cornelia.huck@...ibm.com>,
	Greg Kroah-Hartman <gregkh@...e.de>
Subject: [PATCH 15/28] driver core: Don't stop probing on ->probe errors.

From: Cornelia Huck <cornelia.huck@...ibm.com>

Don't stop on the first ->probe error that is not -ENODEV/-ENXIO.

There might be a driver registered returning an unresonable return code, and
this stops probing completely even though it may make sense to try the next
possible driver. At worst, we may end up with an unbound device.

Signed-off-by: Cornelia Huck <cornelia.huck@...ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
 drivers/base/dd.c |   13 ++++++-------
 1 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/drivers/base/dd.c b/drivers/base/dd.c
index 510e788..f705137 100644
--- a/drivers/base/dd.c
+++ b/drivers/base/dd.c
@@ -136,18 +136,17 @@ probe_failed:
 	driver_sysfs_remove(dev);
 	dev->driver = NULL;
 
-	if (ret == -ENODEV || ret == -ENXIO) {
-		/* Driver matched, but didn't support device
-		 * or device not found.
-		 * Not an error; keep going.
-		 */
-		ret = 0;
-	} else {
+	if (ret != -ENODEV && ret != -ENXIO) {
 		/* driver matched but the probe failed */
 		printk(KERN_WARNING
 		       "%s: probe of %s failed with error %d\n",
 		       drv->name, dev->bus_id, ret);
 	}
+	/*
+	 * Ignore errors returned by ->probe so that the next driver can try
+	 * its luck.
+	 */
+	ret = 0;
 done:
 	kfree(data);
 	atomic_dec(&probe_count);
-- 
1.4.4.4

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/