linux-kernel - [PATCH v3 0/2] Fix deadlock during RSCI FIFO overrun error

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Message-ID: <20251114101350.106699-1-biju.das.jz@bp.renesas.com>
Date: Fri, 14 Nov 2025 10:13:45 +0000
From: Biju <biju.das.au@...il.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>
Cc: Biju Das <biju.das.jz@...renesas.com>,
	Wolfram Sang <wsa+renesas@...g-engineering.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>,
	linux-kernel@...r.kernel.org,
	linux-serial@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	Biju Das <biju.das.au@...il.com>
Subject: [PATCH v3 0/2] Fix deadlock during RSCI FIFO overrun error

From: Biju Das <biju.das.jz@...renesas.com>

This patch series aims to fix 2 issues
 1) Fix deadlock during RSCI FIFO overrun error, as wrong register used to
    clear the status.
 2) Hardware flow control is supported on all SoCs. Fix the binding.

v2->v3:
 * Added Rb tag from Geert for binding patch.
 * Dropped overrun_clr from struct sci_port_params_bits
 * All of the CFCLR_*C clearing bits match the corresponding
   CSR_*status bits. So, reused the overrun mask for irq clearing.
v1->v2:
 * Split the fixes patches from original series [1]
 * Updated commit message to make it clear that hardware flow control
   supported on all SoC for patch#1
 * Added Ack from Conor for patch#1
 * Added fixes tag for patch#1

[1] https://lore.kernel.org/all/20251027154615.115759-1-biju.das.jz@bp.renesas.com/

Biju Das (2):
  dt-bindings: serial: rsci: Drop "uart-has-rtscts: false"
  serial: sh-sci: Fix deadlock during RSCI FIFO overrun error

 .../devicetree/bindings/serial/renesas,rsci.yaml     |  2 --
 drivers/tty/serial/sh-sci.c                          | 12 ++++++++++--
 2 files changed, 10 insertions(+), 4 deletions(-)

-- 
2.43.0