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([182.150.55.91]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c92b9dc216csm6914869a12.9.2026.06.28.19.38.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 28 Jun 2026 19:38:38 -0700 (PDT) From: Liem To: carlos.song@oss.nxp.com Cc: andi.shyti@kernel.org, biwen.li@nxp.com, festevam@gmail.com, frank.li@nxp.com, frank.li@oss.nxp.com, imx@lists.linux.dev, kernel@pengutronix.de, liem16213@gmail.com, linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, o.rempel@pengutronix.de, s.hauer@pengutronix.de, stable@vger.kernel.org, wsa@kernel.org Subject: [PATCH v4 0/2] i2c: imx: Fix slave mode corner issues Date: Mon, 29 Jun 2026 10:38:27 +0800 Message-Id: <20260629023829.152651-1-liem16213@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit This series fixes two issues in the i2c-imx target mode. Patch 1 defers slave pointer assignment to after a successful resume and protects it with the slave_lock to prevent races with the shared IRQ handler. Patch 2 cancels the hrtimer before clearing the slave pointer during unregistration, preventing a potential use-after-free. Changes in v4: - Patch 1: reworked to avoid race with shared IRQ handler, as suggested by Sashiko. - Patch 2: unchanged. Changes in v3: - Split the original patch into two separate patches as suggested by Frank Li. - v2: https://lore.kernel.org/imx/ 20260625160219.55116-1-liem16213@gmail.com/ Liem (2): i2c: imx: Fix slave registration race and error handling i2c: imx: Cancel hrtimer before clearing slave pointer drivers/i2c/busses/i2c-imx.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) -- 2.34.1