From: Oliver Neukum <oliver@neukum.org>
Date: Fri, 1 Feb 2008 23:16:56 +0000 (-0800)
Subject: USB: use GFP_NOIO in reset path
X-Git-Tag: v2.6.24.1~29
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ce2193d7451caa92af6753b5cef6212be6bbb57f;p=thirdparty%2Fkernel%2Fstable.git

USB: use GFP_NOIO in reset path

this function will run in the context of the scsi error handler thread.
It must use GFP_NOIO instead of GFP_KERNEL to avoid a possible
deadlock.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index b04d232d4c656..1b17f636f49c7 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -2946,7 +2946,7 @@ static int config_descriptors_changed(struct usb_device *udev)
 		if (len < le16_to_cpu(udev->config[index].desc.wTotalLength))
 			len = le16_to_cpu(udev->config[index].desc.wTotalLength);
 	}
-	buf = kmalloc (len, GFP_KERNEL);
+	buf = kmalloc(len, GFP_NOIO);
 	if (buf == NULL) {
 		dev_err(&udev->dev, "no mem to re-read configs after reset\n");
 		/* assume the worst */