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 3BFF62459DC; Tue, 17 Mar 2026 17:24:48 +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=1773768288; cv=none; b=ARihBQcXdXuFE4QkWrMvfk88IjWoMS/bNTXszDOPMMvIsS8/Ef9Ur9uRn+s0QgbXmb3NDFDMdxZJ+DJaibutTBv17M5gcK78VujMaeJyJtUpK3kqYbBzVOsW7MdFano47tOfA9I5Cys3UmVN1Ue/0L2X20U+a5MXLbAWiOYbRpU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1773768288; c=relaxed/simple; bh=IbUc7weamEA7zpS9PlQn3aHS9XFc+zBXGNPCOcCmKoY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qbjOkUsBsVPFMeomKOErhtjat/D6WnwFzAMWPV2bDkAW4VteJHBveESfIl19XL3dYQSaxEzjtydW7Y6Y0hHFGeEBSU1k+AqUjD2HBzoe/I5LTRofexoje++QKUAZypfFM8oXu63BfphqopnAD/QvZRj12JAOfcYshufuv0cy03Y= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=yluU908K; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="yluU908K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 75AF2C4CEF7; Tue, 17 Mar 2026 17:24:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1773768288; bh=IbUc7weamEA7zpS9PlQn3aHS9XFc+zBXGNPCOcCmKoY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=yluU908Ke7EOHfzHZ4c4s4etb4it1Q3jYUXIlF3Re7Y4t7Ewb+nugGMDdAuQjkTof 6mlxO+6o3ixbtKERVrpBfK+4WOP1PT0pB9jFRVZVrgIjrKjjgmJi/ZxStD6P3xWMdh +7dZ3mUiyw2JVDmAt+oQqA4bI0iRGaYKPhd5J1uU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nam Cao , Mahesh Salgaonkar , Nilay Shroff , Madhavan Srinivasan Subject: [PATCH 6.18 275/333] powerpc/pseries: Correct MSI allocation tracking Date: Tue, 17 Mar 2026 17:35:04 +0100 Message-ID: <20260317163009.595320386@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260317162959.345812316@linuxfoundation.org> References: <20260317162959.345812316@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nam Cao commit 35e4f2a17eb40288f9bcdb09549fa04a63a96279 upstream. The per-device MSI allocation calculation in pseries_irq_domain_alloc() is clearly wrong. It can still happen to work when nr_irqs is 1. Correct it. Fixes: c0215e2d72de ("powerpc/pseries: Fix MSI-X allocation failure when quota is exceeded") Cc: stable@vger.kernel.org Signed-off-by: Nam Cao Reviewed-by: Mahesh Salgaonkar Reviewed-by: Nilay Shroff [maddy: Fixed Nilay's reviewed-by tag] Signed-off-by: Madhavan Srinivasan Link: https://patch.msgid.link/20260302003948.1452016-1-namcao@linutronix.de Signed-off-by: Greg Kroah-Hartman --- arch/powerpc/platforms/pseries/msi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/powerpc/platforms/pseries/msi.c +++ b/arch/powerpc/platforms/pseries/msi.c @@ -605,7 +605,7 @@ static int pseries_irq_domain_alloc(stru &pseries_msi_irq_chip, pseries_dev); } - pseries_dev->msi_used++; + pseries_dev->msi_used += nr_irqs; return 0; out: