From patchwork Mon Mar 17 13:29:26 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 14019302 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 B646423F41D; Mon, 17 Mar 2025 13:29:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742218169; cv=none; b=WqHTHXxufBAuEfLuImVzsTw/ak/eaFhLSzfo46jPtK4PtP35/EiJQRuJhBkioo3L02eThgUrOTG7kUs4h38FwUHy61HXgEQwSiUXjUbVYtwBjIr8lUkP7WmUGL3CAMZA8iRESH1U6UqrDzOPDhYYSk6PB8PngiijuCvw+4tnGtc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1742218169; c=relaxed/simple; bh=3FyrNeDeo6PuudCPLtSK1Wvo8s/2uyQqMBBJ+Hz0upU=; h=Message-ID:From:To:Cc:Subject:References:MIME-Version: Content-Type:Date; b=mbjCumfAnSR1Mtm0XLJFpSlDhWHef+pnNHMaqgyrk1a8qqEquFziWbV/crOAboatmEaWBAXxP+/N07hYYWnQv0lRR4Xt9hn0w9nc1FEPkVt7kW215OPXtyT0tDE8XWM1Yn4QV9RMf5NFStu+E9nS12n/uHexKaIhL+Q72OT5Kdo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=A0fuhMpQ; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=JPutzsMP; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="A0fuhMpQ"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="JPutzsMP" Message-ID: <20250317092945.953189553@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1742218166; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=j38ae1J786gvtJe/THvWhwBIOiRP6lJqXx4r70BjdWE=; b=A0fuhMpQc4rT72k4I3p9aWAwouOb045M4R4kxN1HcvFY3aA04PoVnFyJQ6qCHka6Z7NpSm 4rl4dhHcAO0DqsoHKs33Y2P64ZRbz8IC6S09ym3CMqk9yQ62NC8TKXcsCN5RF4M2isVgPp FVbQ2FsOcS2iHEwp2UOtNsqXXJddARazMO+Hdu2134rKpJeuSIeX2MXOCkxiZLfx5nAQln TQuxZB+MRZ+n7/NEtg0C6WSRYMfL6h+tj/nxzdBFIOjFzJNfgpO+WsXJJFSt5gDLqXs/QP zhvyfjNNgVaE+pHLz75g8gA7vCX/PYxF/U6I1n2p5TIe5EpcpLB3/hwQHHJhHw== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1742218166; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=j38ae1J786gvtJe/THvWhwBIOiRP6lJqXx4r70BjdWE=; b=JPutzsMPXYyTRbsOtw/zuQsFh12RMgm7HrdsKssaS/80A9owsje+/jMUa1UjCWTgNvToXf qrrWloOn508zQyAw== From: Thomas Gleixner To: LKML Cc: Marc Zyngier , Peter Zijlstra , Jonathan Cameron , Logan Gunthorpe , Dave Jiang , Jon Mason , Allen Hubbe , ntb@lists.linux.dev, Nishanth Menon , Dhruva Gole , Tero Kristo , Santosh Shilimkar , Bjorn Helgaas , linux-pci@vger.kernel.org, Michael Kelley , Wei Liu , Haiyang Zhang , linux-hyperv@vger.kernel.org, Wei Huang , Manivannan Sadhasivam , "James E.J. Bottomley" , "Martin K. Petersen" , linux-scsi@vger.kernel.org, Jonathan Cameron Subject: [patch V3 04/10] NTB/msi: Switch MSI descriptor locking to lock guard() References: <20250317092919.008573387@linutronix.de> Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Mon, 17 Mar 2025 14:29:26 +0100 (CET) Convert the code to use the new guard(msi_descs_lock). No functional change intended. Signed-off-by: Thomas Gleixner Reviewed-by: Jonathan Cameron Reviewed-by: Logan Gunthorpe Acked-by: Dave Jiang Cc: Jon Mason Cc: Allen Hubbe Cc: ntb@lists.linux.dev --- drivers/ntb/msi.c | 22 ++++++++-------------- 1 file changed, 8 insertions(+), 14 deletions(-) --- a/drivers/ntb/msi.c +++ b/drivers/ntb/msi.c @@ -106,10 +106,10 @@ int ntb_msi_setup_mws(struct ntb_dev *nt if (!ntb->msi) return -EINVAL; - msi_lock_descs(&ntb->pdev->dev); - desc = msi_first_desc(&ntb->pdev->dev, MSI_DESC_ASSOCIATED); - addr = desc->msg.address_lo + ((uint64_t)desc->msg.address_hi << 32); - msi_unlock_descs(&ntb->pdev->dev); + scoped_guard (msi_descs_lock, &ntb->pdev->dev) { + desc = msi_first_desc(&ntb->pdev->dev, MSI_DESC_ASSOCIATED); + addr = desc->msg.address_lo + ((uint64_t)desc->msg.address_hi << 32); + } for (peer = 0; peer < ntb_peer_port_count(ntb); peer++) { peer_widx = ntb_peer_highest_mw_idx(ntb, peer); @@ -289,7 +289,7 @@ int ntbm_msi_request_threaded_irq(struct if (!ntb->msi) return -EINVAL; - msi_lock_descs(dev); + guard(msi_descs_lock)(dev); msi_for_each_desc(entry, dev, MSI_DESC_ASSOCIATED) { if (irq_has_action(entry->irq)) continue; @@ -307,17 +307,11 @@ int ntbm_msi_request_threaded_irq(struct ret = ntbm_msi_setup_callback(ntb, entry, msi_desc); if (ret) { devm_free_irq(&ntb->dev, entry->irq, dev_id); - goto unlock; + return ret; } - - ret = entry->irq; - goto unlock; + return entry->irq; } - ret = -ENODEV; - -unlock: - msi_unlock_descs(dev); - return ret; + return -ENODEV; } EXPORT_SYMBOL(ntbm_msi_request_threaded_irq);