From: Sergey Shtylyov <s.shtylyov@omp.ru>
To: <linux-usb@vger.kernel.org>,
Alan Stern <stern@rowland.harvard.edu>,
"Greg Kroah-Hartman" <gregkh@linuxfoundation.org>
Subject: [PATCH v2 02/22] usb: host: ehci-mv: deny IRQ0
Date: Tue, 26 Oct 2021 20:39:23 +0300 [thread overview]
Message-ID: <20211026173943.6829-3-s.shtylyov@omp.ru> (raw)
In-Reply-To: <20211026173943.6829-1-s.shtylyov@omp.ru>
If platform_get_irq() returns IRQ0 (considered invalid according to Linus)
the driver blithely passes it to usb_add_hcd() that treats IRQ0 as no IRQ
at all. Deny IRQ0 right away, returning -EINVAL from the probe() method...
Fixes: a7f40c233a6b ("USB: EHCI: ehci-mv: fix less than zero comparison of an unsigned int")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
---
Changes in version 2:
- added Alan's ACK.
drivers/usb/host/ehci-mv.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/usb/host/ehci-mv.c b/drivers/usb/host/ehci-mv.c
index 8fd27249ad25..f54ce1eeccf3 100644
--- a/drivers/usb/host/ehci-mv.c
+++ b/drivers/usb/host/ehci-mv.c
@@ -168,6 +168,10 @@ static int mv_ehci_probe(struct platform_device *pdev)
retval = platform_get_irq(pdev, 0);
if (retval < 0)
goto err_disable_clk;
+ if (!retval) {
+ retval = -EINVAL;
+ goto err_disable_clk;
+ }
hcd->irq = retval;
ehci = hcd_to_ehci(hcd);
--
2.26.3
next prev parent reply other threads:[~2021-10-26 17:39 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-26 17:39 [PATCH v2 00/22] Explicitly deny IRQ0 in the USB host drivers Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 01/22] usb: host: ehci-exynos: deny IRQ0 Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-30 8:54 ` Greg Kroah-Hartman
2021-10-30 8:54 ` Greg Kroah-Hartman
2021-11-01 20:39 ` Sergey Shtylyov
2021-11-01 20:39 ` Sergey Shtylyov
2021-11-02 13:55 ` Greg Kroah-Hartman
2021-11-02 13:55 ` Greg Kroah-Hartman
2021-11-02 20:45 ` Sergey Shtylyov
2021-11-02 20:45 ` Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov [this message]
2021-10-26 17:39 ` [PATCH v2 03/22] usb: host: ehci-npcm7xx: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 04/22] usb: host: ehci-omap: " Sergey Shtylyov
2021-10-30 19:49 ` kernel test robot
2021-10-30 19:49 ` kernel test robot
2021-10-26 17:39 ` [PATCH v2 05/22] usb: host: ehci-platform: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 06/22] usb: host: ehci-spear: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 07/22] usb: host: ehci-st: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-27 6:08 ` Patrice CHOTARD
2021-10-27 6:08 ` Patrice CHOTARD
2021-10-26 17:39 ` [PATCH v2 08/22] usb: host: ohci-at91: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 09/22] usb: host: ohci-da8xx: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 10/22] usb: host: ohci-exynos: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 11/22] usb: host: ohci-nxp: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-26 18:25 ` Vladimir Zapolskiy
2021-10-26 18:25 ` Vladimir Zapolskiy
2021-10-26 17:39 ` [PATCH v2 12/22] usb: host: ohci-omap: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 13/22] usb: host: ohci-platform: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 14/22] usb: host: ohci-pxa27x: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 15/22] usb: host: ohci-sm501: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 16/22] usb: host: ohci-spear: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 17/22] usb: host: ohci-st: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-27 6:08 ` Patrice CHOTARD
2021-10-27 6:08 ` Patrice CHOTARD
2021-10-26 17:39 ` [PATCH v2 18/22] usb: host: ohci-tmio: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 19/22] usb: host: xhci-histb: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 20/22] usb: host: xhci-mtk: " Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-26 17:39 ` Sergey Shtylyov
2021-10-27 8:54 ` Chunfeng Yun
2021-10-27 8:54 ` Chunfeng Yun
2021-10-27 8:54 ` Chunfeng Yun
2021-10-27 9:18 ` Chunfeng Yun
2021-10-27 9:18 ` Chunfeng Yun
2021-10-27 9:18 ` Chunfeng Yun
2021-10-27 9:25 ` Sergey Shtylyov
2021-10-27 9:25 ` Sergey Shtylyov
2021-10-27 9:25 ` Sergey Shtylyov
2021-10-27 9:35 ` Chunfeng Yun
2021-10-27 9:35 ` Chunfeng Yun
2021-10-27 9:35 ` Chunfeng Yun
2021-10-26 17:39 ` [PATCH v2 21/22] usb: host: xhci-plat: " Sergey Shtylyov
2021-10-26 17:39 ` [PATCH v2 22/22] usb: host: xhci-tegra: " Sergey Shtylyov
2021-10-30 22:08 ` kernel test robot
2021-10-30 22:08 ` kernel test robot
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