FAILED: patch "[PATCH] dma-buf/dma-resv: Respect num_fences when initializing the" failed to apply to 4.14-stable tree

The patch below does not apply to the 4.14-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 bf8975837dac156c33a4d15d46602700998cb6dd Mon Sep 17 00:00:00 2001
From: Maarten Lankhorst <[email protected]>
Date: Tue, 24 Nov 2020 12:57:07 +0100
Subject: [PATCH] dma-buf/dma-resv: Respect num_fences when initializing the
shared fence list.
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We hardcode the maximum number of shared fences to 4, instead of respecting num_fences. Use a minimum of 4, but more if num_fences is higher.

This seems to have been an oversight when first implementing the api.

index bb5a42b10c29..6ddbeb5dfbf6 100644
@@ -200,7 +200,7 @@ int dma_resv_reserve_shared(struct dma_resv *obj, unsigned int num_fences)
 			max = max(old->shared_count + num_fences,
 				  old->shared_max * 2);
 	} else {
-		max = 4;
+		max = max(4ul, roundup_pow_of_two(num_fences));
 	}
 
 	new = dma_resv_list_alloc(max);