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Date:	Thu, 14 Aug 2014 14:39:53 -0700 (PDT)
From:	David Miller <>
Subject: Re: [PATCH net] net: xgene: Check negative return value of

From: Tobias Klauser <>
Date: Thu, 14 Aug 2014 13:59:42 +0200

> xgene_enet_get_ring_size() returns a negative value in case of an error,
> but its only caller in xgene_enet_create_desc_ring() currently uses the
> return value directly as u32. Instead, check for a negative value first and
> error out in case. Also move the call to xgene_enet_get_ring_size() before
> devm_kzalloc() so we don't need to free anything in the error path.
> This fixes the following issue reported by the Coverity Scanner:
> ** CID 1231336:  Improper use of negative value  (NEGATIVE_RETURNS)
> /drivers/net/ethernet/apm/xgene/xgene_enet_main.c: 596 in xgene_enet_create_desc_ring()
> Signed-off-by: Tobias Klauser <>

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