lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Message-Id: <cover.1642151791.git.zong.li@sifive.com>
Date:   Fri, 14 Jan 2022 17:17:38 +0800
From:   Zong Li <zong.li@...ive.com>
To:     robh+dt@...nel.org, paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, krzysztof.kozlowski@...onical.com,
        conor.dooley@...rochip.com, geert@...ux-m68k.org,
        bin.meng@...driver.com, green.wan@...ive.com, vkoul@...nel.org,
        dmaengine@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org
Cc:     Zong Li <zong.li@...ive.com>
Subject: [PATCH v3 0/3] Determine the number of DMA channels by 'dma-channels' property

The PDMA driver currently assumes there are four channels by default, it
might cause the error if there is actually less than four channels.
Change that by getting number of channel dynamically from device tree.
For backwards-compatible, it uses the default value (i.e. 4) when there
is no 'dma-channels' information in dts.

This patch set contains the dts and dt-bindings change.

Changed in v3:
 - Fix allocating wrong size
 - Return error if 'dma-channels' is larger than maximum

Changed in v2:
 - Rebase on tag v5.16
 - Use 4 as default value of dma-channels

Zong Li (3):
  riscv: dts: Add dma-channels property in dma node
  dt-bindings: Add dma-channels for pdma device node
  dmaengine: sf-pdma: Get number of channel by device tree

 .../bindings/dma/sifive,fu540-c000-pdma.yaml  |  7 +++++++
 .../boot/dts/microchip/microchip-mpfs.dtsi    |  1 +
 arch/riscv/boot/dts/sifive/fu540-c000.dtsi    |  1 +
 drivers/dma/sf-pdma/Makefile                  |  2 ++
 drivers/dma/sf-pdma/sf-pdma.c                 | 20 ++++++++++++-------
 drivers/dma/sf-pdma/sf-pdma.h                 |  8 ++------
 6 files changed, 26 insertions(+), 13 deletions(-)

-- 
2.31.1

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ