From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from ale.deltatee.com (ale.deltatee.com [204.191.154.188]) (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 9277272630; Mon, 27 Jul 2026 18:15:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=204.191.154.188 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785176131; cv=none; b=mYosLGivaTSHArfr+lvk90z7ZmnLl3l9uw0Z4PEefBZiD6Kj6jjgMCK00Kp6AQ/JdvSvPgI5T/FmMLSUzbD3iyXkMQ7r+mK+ToukzK3pbGrQ11DODF0ynKnd5CmWTBT2x0dTcunituE4Xgsri7yJ1leXjwGeT6dWGAir1BCXzkM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1785176131; c=relaxed/simple; bh=2FD7yqyqm61jSijn5w1AoErf4uaG1jZAmMbYSbRkvZs=; h=From:To:Cc:Date:Message-ID:MIME-Version:Subject; b=Sw7MhBgVwW3Vz42abmOH33xBVOU/VyGWccSP/d0W84R6IeS8vjS0ysRttbbKMowMnjgPzK/qNHlPmbtvIVMmVoNdVZLUFMBWCIl0K2e0PQbE4a1FNqp9wJ4LuIpzYMBtCiHiPJG9UuySlKcbHrOZF+Si90bAytU8NanSafMLNDQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=deltatee.com; spf=pass smtp.mailfrom=deltatee.com; dkim=pass (2048-bit key) header.d=deltatee.com header.i=@deltatee.com header.b=hBd6B+vP; arc=none smtp.client-ip=204.191.154.188 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=deltatee.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=deltatee.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=deltatee.com header.i=@deltatee.com header.b="hBd6B+vP" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:MIME-Version:Message-ID:Date:Cc:To:From :references:content-disposition:in-reply-to; bh=bAu7176EpSOkg9IckalvvGE+Y6V2cWQrfyDIInGjvLI=; b=hBd6B+vP4ZsM10fDS6VSjkY/DV PvWlCN7MnlHvMF6AYjehNUnF0MkyOOTTJVprREty2yLmuF4P+2UNSCXnKMjc91XRmuVarkpf8ienl w4oQQsivmHMFq+j+MxNIQoW9qCbenh/i3uqlGkRcIluH6dS2HHYcmL6erpgWJk+B9imxB5B3TY+f9 btNDnMd5H7THw8kMRgrAl1MVR+6MFru605ac2OUOJjaVsTt/Vc+fsyt3gF8i9rfa26MV7yu9VPKfX ilxbJWwWlDfFxf8y5i6nbkGsWuH4m6py8tPy22wgXA4ZcSzZg2r9ls29czA3tfRPD3n/2KlWEF8jG hU0SRIeA==; Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.98.2) (envelope-from ) id 1woPrN-000000004wy-0jNZ; Mon, 27 Jul 2026 12:15:29 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.98.2) (envelope-from ) id 1woPrM-000000002WZ-38Vz; Mon, 27 Jul 2026 12:15:28 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, dmaengine@vger.kernel.org, Vinod Koul Cc: Frank Li , Kelvin Cao , =?UTF-8?q?Thomas=20Wei=C3=9Fschuh?= , Dave Jiang , George Ge , Jaeyoung Chung , Logan Gunthorpe Date: Mon, 27 Jul 2026 12:15:15 -0600 Message-ID: <20260727181526.9672-1-logang@deltatee.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: dmaengine@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, dmaengine@vger.kernel.org, vkoul@kernel.org, Frank.li@nxp.com, linux@weissschuh.net, dave.jiang@intel.com, kelvin.cao@microchip.com, george.ge@microchip.com, jjy600901@snu.ac.kr, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com X-Spam-Level: Subject: [PATCH v3 00/11] dmaengine: miscellaneous fixes for ioat, switchtec_dma and plx_dma X-SA-Exim-Version: 4.2.1 (built Sun, 23 Feb 2025 07:57:16 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) When reviewing the recent switchtec patchset[1], the Sashiko bot noticed a handful of pre-existing problems in the ioat and switchtec drivers. I attempted to fix those plus an unrelated issue reported in plxdma but when I submitted those patches, Sashiko found even more issues[2][3] (it is relentless!). I've fixed the issues reported with v1 and v2 of this series and many of the ones for the switchtec driver. But the pre-existing issues in ioat, plxdma and the dmaengine itself I've punted until I can find some time to dig into them. The series is based off of v7.2-rc4. Thanks, Logan [1] https://lore.kernel.org/all/20260707162045.23910-1-logang@deltatee.com [2] https://sashiko.dev/#/patchset/20260717221001.361421-1-logang@deltatee.com [3] https://sashiko.dev/#/patchset/20260721155739.62120-1-logang@deltatee.com Changes since v2: * Fixed a race when unlisting the channels in the error path. The interrupt needed to be disabled before hand. (Per Sashiko) * Picked up Acked-by from Dave Jiang on the two ioat patches. Changes since v1: * Added a fix for switchtec_dma_alloc_chan_resources()'s error path calling disable_channel() instead of properly halting the channel before freeing the descriptor rings. (Per Sashiko) * Added a fix for switchtec-dma channel structs being freed without being removed from dma_dev->channels on a registration failure, while the channel status IRQ is still live. (Per Sashiko) * Added a fix for switchtec_dma_remove() using swdma_dev after it may already have been freed by dma_async_device_unregister(). (Per Sashiko) * Added a fix for chan_status_irq being freed with the wrong API, and a valid vector index of 0 being incorrectly treated as unset. (Per Sashiko) * Made switchtec_dma_chans_release() void, since nothing checked its return value. (Noticed while reviewing the code for these changes). Logan Gunthorpe (11): dmaengine: switchtec-dma: fix double-free in switchtec_dma_free_desc() dmaengine: switchtec-dma: fix resource leak in alloc_chan_resources dmaengine: switchtec-dma: halt channel on alloc_chan_resources error dmaengine: switchtec-dma: fix channel leak on registration failure dmaengine: switchtec-dma: make switchtec_dma_chans_release() void dmaengine: switchtec-dma: fix chan_status_irq cleanup on create() error dmaengine: switchtec-dma: disable channels before freeing on registration failure dmaengine: switchtec-dma: fix use-after-free of swdma_dev in remove() dmaengine: ioat: disable relaxed ordering before registering the device dmaengine: ioat: use sysfs_emit() in per-channel sysfs show() dmaengine: plx_dma: fix NULL pointer deref in plx_dma_isr() drivers/dma/ioat/init.c | 18 ++++---- drivers/dma/ioat/sysfs.c | 22 +++++----- drivers/dma/plx_dma.c | 10 ++--- drivers/dma/switchtec_dma.c | 84 +++++++++++++++++++++++++++---------- 4 files changed, 88 insertions(+), 46 deletions(-) base-commit: 1590cf0329716306e948a8fc29f1d3ee87d3989f -- 2.47.3