From: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
To: kvalo@codeaurora.org, davem@davemloft.net,
ath10k@lists.infradead.org, linux-wireless@vger.kernel.org,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
nicoleotsuka@gmail.com, hch@lst.de, m.szyprowski@samsung.com,
robin.murphy@arm.com, iommu@lists.linux-foundation.org
Cc: tobias.klausmann@freenet.de
Subject: regression in ath10k dma allocation
Date: Fri, 16 Aug 2019 18:08:26 +0200 [thread overview]
Message-ID: <8fe8b415-2d34-0a14-170b-dcb31c162e67@mni.thm.de> (raw)
Hello all,
within the current development cycle i noted the ath10k driver failing
to setup:
[ 3.185660] ath10k_pci 0000:02:00.0: failed to alloc CE dest ring 1: -12
[ 3.185664] ath10k_pci 0000:02:00.0: failed to allocate copy engine
pipe 1: -12
[ 3.185667] ath10k_pci 0000:02:00.0: failed to allocate copy engine
pipes: -12
[ 3.185669] ath10k_pci 0000:02:00.0: failed to setup resource: -12
[ 3.185692] ath10k_pci: probe of 0000:02:00.0 failed with error -12
the actual failure comes from [1] and indeed bisecting brought me to a
related commit "dma-contiguous: add dma_{alloc,free}_contiguous()
helpers" [2]. Reverting the commit fixes the problem, yet this might
just be the driver abusing the dma infrastructure, so hopefully someone
can have a look at it, as i'm not familiar with the code!
[1]:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/net/wireless/ath/ath10k/ce.c?h=v5.3-rc4#n1650
[2]:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b1d2dc009dece4cd7e629419b52266ba51960a6b
Greetings,
Tobias
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next reply other threads:[~2019-08-16 16:34 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-16 16:08 Tobias Klausmann [this message]
2019-08-16 16:43 ` regression in ath10k dma allocation Christoph Hellwig
2019-08-16 20:16 ` Tobias Klausmann
2019-08-16 22:25 ` Nicolin Chen
2019-08-16 22:42 ` Tobias Klausmann
2019-08-18 3:13 ` Hillf Danton
2019-08-18 22:38 ` Tobias Klausmann
2019-08-20 1:58 ` Nicolin Chen
2019-08-20 2:14 ` Christoph Hellwig
2019-08-20 3:05 ` Christoph Hellwig
2019-08-20 6:58 ` Hillf Danton
2019-08-20 7:12 ` Christoph Hellwig
2019-08-20 20:24 ` Tobias Klausmann
2019-08-20 2:29 Hillf Danton
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