From: Greg KH <gregkh@suse.de>
Date: Thu, 18 Aug 2005 00:33:11 +0000 (-0700)
Subject: [PATCH] Fix manual binding infinite loop
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=518e6540831c69422faecceee8f964bd439ac9d0;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] Fix manual binding infinite loop

Fix for manual binding of drivers to devices.  Problem is if you pass in
a valid device id, but the driver refuses to bind.  Infinite loop as
write() tries to resubmit the data it just sent.

Thanks to Michal Ostrowski <mostrows@watson.ibm.com> for pointing the
problem out.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/drivers/base/bus.c b/drivers/base/bus.c
index 96fe2f956754..ab53832d57e5 100644
--- a/drivers/base/bus.c
+++ b/drivers/base/bus.c
@@ -180,7 +180,9 @@ static ssize_t driver_bind(struct device_driver *drv,
 		up(&dev->sem);
 		put_device(dev);
 	}
-	return err;
+	if (err)
+		return err;
+	return count;
 }
 static DRIVER_ATTR(bind, S_IWUSR, NULL, driver_bind);