From: Liem <liem16213@gmail.com>
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 [thread overview]
Message-ID: <20260629023829.152651-1-liem16213@gmail.com> (raw)
In-Reply-To: <AM0PR04MB6802B863CD9B9AE1609C1785E8EB2@AM0PR04MB6802.eurprd04.prod.outlook.com>
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
next prev parent reply other threads:[~2026-06-29 2:38 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-25 7:11 [PATCH] i2c: imx: Fix slave registration error path and missing NULL check Liem
2026-06-25 11:17 ` Carlos Song (OSS)
2026-06-25 16:02 ` [PATCH v2] i2c: imx: Fix slave registration error path and missing timer cleanup Liem
2026-06-25 16:16 ` Frank Li
2026-06-26 1:55 ` liem
2026-06-26 2:58 ` [PATCH v3 0/2] Fix slave mode corner issues Liem
2026-06-26 2:58 ` [PATCH v3 1/2] i2c: imx: Clear slave pointer on registration error Liem
2026-06-26 6:23 ` Carlos Song (OSS)
2026-06-26 8:30 ` liem
2026-06-29 2:38 ` Liem [this message]
2026-06-29 2:38 ` [PATCH v4 1/2] i2c: imx: Fix slave registration race and error handling Liem
2026-06-29 9:30 ` Carlos Song
2026-06-29 14:13 ` Frank Li
2026-06-29 2:38 ` [PATCH v4 2/2] i2c: imx: Cancel hrtimer before clearing slave pointer Liem
2026-06-29 14:14 ` Frank Li
2026-06-26 2:58 ` [PATCH v3 " Liem
2026-06-26 6:26 ` Carlos Song (OSS)
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