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From: Patrice CHOTARD <patrice.chotard@foss.st.com>
To: Sergey Shtylyov <s.shtylyov@omp.ru>, <linux-usb@vger.kernel.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 07/22] usb: host: ehci-st: deny IRQ0
Date: Wed, 27 Oct 2021 08:08:01 +0200	[thread overview]
Message-ID: <327c5d82-5944-97d1-b6f7-d43d38cde029@foss.st.com> (raw)
In-Reply-To: <20211026173943.6829-8-s.shtylyov@omp.ru>

Hi Sergey

On 10/26/21 7:39 PM, Sergey Shtylyov wrote:
> 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: e47c5a0906f9 ("usb: host: ehci-st: Add EHCI support for ST STB devices")
> 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-st.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c
> index f74433aac948..5f53c313f943 100644
> --- a/drivers/usb/host/ehci-st.c
> +++ b/drivers/usb/host/ehci-st.c
> @@ -160,6 +160,8 @@ static int st_ehci_platform_probe(struct platform_device *dev)
>  	irq = platform_get_irq(dev, 0);
>  	if (irq < 0)
>  		return irq;
> +	if (!irq)
> +		return -EINVAL;
>  	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
>  	if (!res_mem) {
>  		dev_err(&dev->dev, "no memory resource provided");
> 
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

Thanks
Patrice

WARNING: multiple messages have this Message-ID (diff)
From: Patrice CHOTARD <patrice.chotard@foss.st.com>
To: Sergey Shtylyov <s.shtylyov@omp.ru>, <linux-usb@vger.kernel.org>,
	Alan Stern <stern@rowland.harvard.edu>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v2 07/22] usb: host: ehci-st: deny IRQ0
Date: Wed, 27 Oct 2021 08:08:01 +0200	[thread overview]
Message-ID: <327c5d82-5944-97d1-b6f7-d43d38cde029@foss.st.com> (raw)
In-Reply-To: <20211026173943.6829-8-s.shtylyov@omp.ru>

Hi Sergey

On 10/26/21 7:39 PM, Sergey Shtylyov wrote:
> 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: e47c5a0906f9 ("usb: host: ehci-st: Add EHCI support for ST STB devices")
> 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-st.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/usb/host/ehci-st.c b/drivers/usb/host/ehci-st.c
> index f74433aac948..5f53c313f943 100644
> --- a/drivers/usb/host/ehci-st.c
> +++ b/drivers/usb/host/ehci-st.c
> @@ -160,6 +160,8 @@ static int st_ehci_platform_probe(struct platform_device *dev)
>  	irq = platform_get_irq(dev, 0);
>  	if (irq < 0)
>  		return irq;
> +	if (!irq)
> +		return -EINVAL;
>  	res_mem = platform_get_resource(dev, IORESOURCE_MEM, 0);
>  	if (!res_mem) {
>  		dev_err(&dev->dev, "no memory resource provided");
> 
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>

Thanks
Patrice

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  reply	other threads:[~2021-10-27  6:08 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 ` [PATCH v2 02/22] usb: host: ehci-mv: " Sergey Shtylyov
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 [this message]
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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