netdev - Re: [PATCH 5/5] net: can: ifi: Add IFI CANFD IP support

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Date:	Tue, 12 Jan 2016 03:29:28 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Marek Vasut <marex@...x.de>
Cc:	kbuild-all@...org, netdev@...r.kernel.org,
	Marc Kleine-Budde <mkl@...gutronix.de>,
	Oliver Hartkopp <socketcan@...tkopp.net>,
	Marek Vasut <marex@...x.de>,
	Mark Rutland <mark.rutland@....com>,
	Wolfgang Grandegger <wg@...ndegger.com>
Subject: Re: [PATCH 5/5] net: can: ifi: Add IFI CANFD IP support

Hi Marek,

[auto build test WARNING on net/master]
[also build test WARNING on v4.4 next-20160111]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Marek-Vasut/net-can-Sort-the-Kconfig-includes/20160112-025020
config: x86_64-allmodconfig (attached as .config)
reproduce:
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All warnings (new ones prefixed by >>):

   drivers/net/can/ifi_canfd/ifi_canfd.c: In function 'ifi_canfd_isr':
>> drivers/net/can/ifi_canfd/ifi_canfd.c:486:27: warning: large integer implicitly truncated to unsigned type [-Woverflow]
     const u32 clr_irq_mask = ~(IFI_CANFD_INTERRUPT_SET_IRQ |
                              ^
   drivers/net/can/ifi_canfd/ifi_canfd.c: In function 'ifi_canfd_start':
   drivers/net/can/ifi_canfd/ifi_canfd.c:640:9: warning: large integer implicitly truncated to unsigned type [-Woverflow]
     writel(~IFI_CANFD_INTERRUPT_SET_IRQ, priv->base + IFI_CANFD_INTERRUPT);
            ^
   drivers/net/can/ifi_canfd/ifi_canfd.c: In function 'ifi_canfd_stop':
   drivers/net/can/ifi_canfd/ifi_canfd.c:675:9: warning: large integer implicitly truncated to unsigned type [-Woverflow]
     writel(~IFI_CANFD_INTERRUPT_SET_IRQ, priv->base + IFI_CANFD_INTERRUPT);
            ^

vim +486 drivers/net/can/ifi_canfd/ifi_canfd.c

   470			napi_complete(napi);
   471			ifi_canfd_irq_enable(ndev, 1);
   472		}
   473	
   474		return work_done;
   475	}
   476	
   477	static irqreturn_t ifi_canfd_isr(int irq, void *dev_id)
   478	{
   479		struct net_device *ndev = (struct net_device *)dev_id;
   480		struct ifi_canfd_priv *priv = netdev_priv(ndev);
   481		struct net_device_stats *stats = &ndev->stats;
   482		const u32 rx_irq_mask = IFI_CANFD_INTERRUPT_RXFIFO_NEMPTY |
   483					IFI_CANFD_INTERRUPT_RXFIFO_NEMPTY_PER;
   484		const u32 tx_irq_mask = IFI_CANFD_INTERRUPT_TXFIFO_EMPTY |
   485					IFI_CANFD_INTERRUPT_TXFIFO_REMOVE;
 > 486		const u32 clr_irq_mask = ~(IFI_CANFD_INTERRUPT_SET_IRQ |
   487					   IFI_CANFD_INTERRUPT_ERROR_WARNING);
   488		u32 isr;
   489	
   490		isr = readl(priv->base + IFI_CANFD_INTERRUPT);
   491	
   492		/* No interrupt */
   493		if (isr == 0)
   494			return IRQ_NONE;

---
0-DAY kernel test infrastructure                Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all                   Intel Corporation

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