From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Google-Smtp-Source: AH8x2240PORtdvwATzZHuKt6+xxPGityn+dn8F5sWybrWqGc84Hc/xjXn1wPaTnBEs3C5YDeB8YF ARC-Seal: i=1; a=rsa-sha256; t=1517415883; cv=none; d=google.com; s=arc-20160816; b=d0IFO4RItHvPjxpjnws87rCkxhoVRqiGXwKv8FTWmNjAGvHAc/+fL1shekK0S1Knjj jTJdQ3N2Pbawf3FDmgrxVEMN3zMxa/GxhFIqf4S5/646fEqP2xUlnXh2pj/0ZK/emht2 oIACC8ecf9fw6J2HhsCLEC+5K0UzSl1CuvnGCDuJetzJe6/JeJJBJ9a7PPZA23jR3S1F qXGzefJMomZFqRuTdpX0niOi+IXHvke1+pn4GqnZdsrzZuu0OtzzYQQs9NEHXnxhdjVR B0bKirXxtWCpm3qO7BEf0WQQ4nyhvbaSww9JWu27wofIb7fxY1HTYfAROJC3/72FhmsB QCwQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=user-agent:in-reply-to:content-disposition:mime-version:references :message-id:subject:cc:to:from:date:arc-authentication-results; bh=T/lHVkmX60KQ5lGr7s9z0+FRmqMc9N/Y3XFaE74+p6s=; b=i5KjKkJW5JrmeM3Yq5685llNhVBq4G3xI/t7pfm3aIZ9lTxDHAO9/P1vYJacN62aAl HZ/0KwIr2bAhRZHGpacsqotacwtOPYOuTubehY/ckus/HaFfcStaoJbBolfaHzVHpV+e O+rf+TefIxnp2vRjwtrTqjc0665WH4gbsAdkDSiy2lDp6w/xm0UP4vy+Sshp3KVo29Qj t8El2r1fSDV26FW4bIsHDig4sTb7JS4HVE9GxGmWS4HxGd3U6SVrSRyoid3CUXqeArOJ TuDPImyzLwFlWqh0+6f2+jfFFtBZ0t3NTAJpYKlzFbpw71W+awEjpoRdTgYDFIVDzOIR 7L2w== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of keith.busch@intel.com designates 192.55.52.43 as permitted sender) smtp.mailfrom=keith.busch@intel.com Authentication-Results: mx.google.com; spf=pass (google.com: domain of keith.busch@intel.com designates 192.55.52.43 as permitted sender) smtp.mailfrom=keith.busch@intel.com X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.46,440,1511856000"; d="scan'208";a="15902178" Date: Wed, 31 Jan 2018 09:28:26 -0700 From: Keith Busch To: Oza Pawandeep Cc: Bjorn Helgaas , Philippe Ombredanne , Thomas Gleixner , Greg Kroah-Hartman , Kate Stewart , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, Dongdong Liu , Wei Zhang , Sinan Kaya , Timur Tabi Subject: Re: [PATCH] PCI/DPC: Fix INT legacy interrupt in dpc_irq Message-ID: <20180131162826.GD27735@localhost.localdomain> References: <1517415535-21850-1-git-send-email-poza@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1517415535-21850-1-git-send-email-poza@codeaurora.org> User-Agent: Mutt/1.9.1 (2017-09-22) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: =?utf-8?q?1591125527357545721?= X-GMAIL-MSGID: =?utf-8?q?1591125877468971963?= X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Wed, Jan 31, 2018 at 09:48:55PM +0530, Oza Pawandeep wrote: > Current dpc driver acknowledge the interrupt in deferred work, which works > okay since LPI are edge triggered. > But when RP does not have MSI support, port service driver falls back to > legacy GIC SPI interrupts, and with current code we do not acknowledge the > interrupt and we get dpc interrupt storm. > This patch acknowledges the interrupt in interrupt handler. > > Signed-off-by: Oza Pawandeep Thanks, looks good to me. Reviewed-by: Keith Busch