linux-kernel - [PATCH v2] dmaengine: axi-dmac: Request IRQ with IRQF

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: <20180426174000.12008-1-mdf@kernel.org>
Date:   Thu, 26 Apr 2018 10:40:00 -0700
From:   Moritz Fischer <mdf@...nel.org>
To:     linux-kernel@...r.kernel.org
Cc:     dmaengine@...r.kernel.org, dan.j.williams@...el.com,
        vinod.koul@...el.com, lars@...afoo.de,
        Moritz Fischer <mdf@...nel.org>
Subject: [PATCH v2] dmaengine: axi-dmac: Request IRQ with IRQF_SHARED

Request IRQ with IRQF_SHARED flag. This works since the interrupt
handler already checks if there is an actual IRQ pending and returns
IRQ_NONE otherwise.

Acked-by: Lars-Peter Clausen <lars@...afoo.de>
Signed-off-by: Moritz Fischer <mdf@...nel.org>
---
Changes from v1:
- Added Lars' Acked-by
- Dropped patch [1/2] and changed accordingly
---
 drivers/dma/dma-axi-dmac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/dma/dma-axi-dmac.c b/drivers/dma/dma-axi-dmac.c
index 2419fe524daa..15b2453d2647 100644
--- a/drivers/dma/dma-axi-dmac.c
+++ b/drivers/dma/dma-axi-dmac.c
@@ -687,7 +687,7 @@ static int axi_dmac_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_unregister_device;
 
-	ret = request_irq(dmac->irq, axi_dmac_interrupt_handler, 0,
+	ret = request_irq(dmac->irq, axi_dmac_interrupt_handler, IRQF_SHARED,
 		dev_name(&pdev->dev), dmac);
 	if (ret)
 		goto err_unregister_of;
-- 
2.17.0