FAILED: patch "[PATCH] staging: ccree: handle end of sg list gracefully" failed to apply to 4.15-stable tree

The patch below does not apply to the 4.15-stable tree.
If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to <[email protected]>.

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From: Gilad Ben-Yossef <[email protected]>
Date: Sun, 7 Jan 2018 12:14:25 +0000
Subject: [PATCH] staging: ccree: handle end of sg list gracefully

If we are asked for number of entries of an offset bigger than the sg list we should not crash.

index 78288ed75281..0f7126404a32 100644
@@ -94,7 +94,7 @@ static unsigned int cc_get_sgl_nents(struct device *dev,
 {
 	unsigned int nents = 0;
 
-	while (nbytes) {
+	while (nbytes && sg_list) {
 		if (sg_list->length) {
 			nents++;
 			/* get the number of bytes in the last entry */