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Tue, 11 Apr 2023 03:22:05 -0700 Received: from mtkmbs13n1.mediatek.inc (172.21.101.193) by mtkmbs11n1.mediatek.inc (172.21.101.185) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.25; Tue, 11 Apr 2023 18:22:03 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs13n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.25 via Frontend Transport; Tue, 11 Apr 2023 18:22:03 +0800 From: Mark-PK Tsai To: CC: , , , , , , , , Subject: [PATCH 5.4 3/3] irqdomain: Fix mapping-creation race Date: Tue, 11 Apr 2023 18:22:03 +0800 Message-ID: <20230411102203.29646-1-mark-pk.tsai@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20230322124550.29812-1-mark-pk.tsai@mediatek.com> References: <20230322124550.29812-1-mark-pk.tsai@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230411_032212_518307_5D8F96BF X-CRM114-Status: GOOD ( 11.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > From: Johan Hovold > > [ Upstream commit 601363cc08da25747feb87c55573dd54de91d66a ] > > Parallel probing of devices that share interrupts (e.g. when a driver > uses asynchronous probing) can currently result in two mappings for the > same hardware interrupt to be created due to missing serialisation. > > Make sure to hold the irq_domain_mutex when creating mappings so that > looking for an existing mapping before creating a new one is done > atomically. > > Fixes: 765230b5f084 ("driver-core: add asynchronous probing support for drivers") > Fixes: b62b2cf5759b ("irqdomain: Fix handling of type settings for existing mappings") > Link: https://lore.kernel.org/r/YuJXMHoT4ijUxnRb@hovoldconsulting.com > Cc: stable@vger.kernel.org # 4.8 > Cc: Dmitry Torokhov > Cc: Jon Hunter > Tested-by: Hsin-Yi Wang > Tested-by: Mark-PK Tsai > Signed-off-by: Johan Hovold > Signed-off-by: Marc Zyngier > Link: https://lore.kernel.org/r/20230213104302.17307-7-johan+linaro@kernel.org > Signed-off-by: Sasha Levin > Signed-off-by: Mark-PK Tsai 5.4 also need this patch. Could someone please help to review it? Thanks, Mark-PK Tsai _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel