From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0537A2FB965; Fri, 20 Mar 2026 14:04:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774015441; cv=none; b=NZkKeNiGjNZhlIrYSShyLtg7ayQEUkfc4/0NRdxi+3BRdZY1Si6njQ3dxrMrbhNPahrRf36Kn805XyNT//dT8YBBUBgLOQTD2CyTPlZfCa8lRVeNXFxmvpvQm7ZjzO0Cmv4byjpwvL3SMGZNbYM5NaXUaahDEH2ozHExZOq5HSU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774015441; c=relaxed/simple; bh=qCSZ5Q3d+nUbss/z3W0256m0CFb+mhXFmy8to0gfj7Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=G7DlaeDrEJ+g8Fta+nzUmnjQPgKA9wKxJpUhNTU5XqLr62XY+AwigoJDRHlz1PKMRs81//oh68REFTxdGwbKghH1aWChLuwut4PZe0hkAtadQdohOHg9+Pkmd94JBwATuPXPFCurfl8ZazgMODPtMbqC02pL1FHpCc+KTA/B3Rw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Ogo/Ujwc; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Ogo/Ujwc" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 53467C2BCAF; Fri, 20 Mar 2026 14:03:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1774015440; bh=qCSZ5Q3d+nUbss/z3W0256m0CFb+mhXFmy8to0gfj7Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=Ogo/UjwcJS3/ASdP1fbQt5m/gWovi+jf9+6ZHcsghw9EnbdxcSpgaqYOK+vi14c2w khYnwqyZq5cEDa1yeiPe17LPN0q8kPCROo8sgv9o76EnnWqn6kS7uCw8IB4CPcvmdZ plm4ztJEDxyljvOPPADqCPm00DuhCqDQIOwsn2/u7KUA+qyIl/7aIi0CdxDJNZsqmb CzpyZNhP1oLk5hZWvgOfsjPORmUEyCtCAcPWoPEsI/7I84WPJUyIGYqhG/LGNhG4nX vs+3VWYVz//LXsV3xzfbESWeBAqGtbsmMBxnRGHE2/erqHlul1tVG58RD8cWA5IS2i oCHmGEF4HOQzw== Date: Fri, 20 Mar 2026 15:03:55 +0100 From: Niklas Cassel To: Koichiro Den Cc: Manivannan Sadhasivam , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , Kishon Vijay Abraham I , Christian Bruel , Arnd Bergmann , Greg Kroah-Hartman , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] misc: pci_endpoint_test: Use -EINVAL for small subrange size Message-ID: References: <20260320140139.2415480-1-den@valinux.co.jp> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260320140139.2415480-1-den@valinux.co.jp> On Fri, Mar 20, 2026 at 11:01:39PM +0900, Koichiro Den wrote: > The sub_size check ensures that each subrange is large enough for 32-bit > accesses. Subranges smaller than sizeof(u32) do not satisfy this > assumption, so this is a local sanity check rather than a resource > exhaustion case. > > Return -EINVAL instead of -ENOSPC for this case. > > Suggested-by: Niklas Cassel > Signed-off-by: Koichiro Den Reviewed-by: Niklas Cassel