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

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Date:	Tue, 12 Jan 2016 19:06:25 +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: ia64-allmodconfig (attached as .config)
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=ia64 

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 |
                              ^
   In file included from arch/ia64/include/asm/smp.h:20:0,
                    from include/linux/smp.h:59,
                    from include/linux/sched.h:34,
                    from arch/ia64/include/asm/delay.h:16,
                    from include/linux/delay.h:14,
                    from drivers/net/can/ifi_canfd/ifi_canfd.c:15:
   drivers/net/can/ifi_canfd/ifi_canfd.c: In function 'ifi_canfd_start':
   arch/ia64/include/asm/io.h:394:30: warning: large integer implicitly truncated to unsigned type [-Woverflow]
    #define writel(v,a) __writel((v), (a))
                                 ^
>> drivers/net/can/ifi_canfd/ifi_canfd.c:640:2: note: in expansion of macro 'writel'
     writel(~IFI_CANFD_INTERRUPT_SET_IRQ, priv->base + IFI_CANFD_INTERRUPT);
     ^
   drivers/net/can/ifi_canfd/ifi_canfd.c: In function 'ifi_canfd_stop':
   arch/ia64/include/asm/io.h:394:30: warning: large integer implicitly truncated to unsigned type [-Woverflow]
    #define writel(v,a) __writel((v), (a))
                                 ^
   drivers/net/can/ifi_canfd/ifi_canfd.c:675:2: note: in expansion of macro 'writel'
     writel(~IFI_CANFD_INTERRUPT_SET_IRQ, priv->base + IFI_CANFD_INTERRUPT);
     ^

vim +/writel +640 drivers/net/can/ifi_canfd/ifi_canfd.c

   624		writel(0, priv->base + IFI_CANFD_STCMD);
   625	
   626		ifi_canfd_set_bittiming(ndev);
   627		ifi_canfd_set_filters(ndev);
   628	
   629		/* Reset FIFOs */
   630		writel(IFI_CANFD_RXSTCMD_RESET, priv->base + IFI_CANFD_RXSTCMD);
   631		writel(0, priv->base + IFI_CANFD_RXSTCMD);
   632		writel(IFI_CANFD_TXSTCMD_RESET, priv->base + IFI_CANFD_TXSTCMD);
   633		writel(0, priv->base + IFI_CANFD_TXSTCMD);
   634	
   635		/* Repeat transmission until successful */
   636		writel(0, priv->base + IFI_CANFD_REPEAT);
   637		writel(0, priv->base + IFI_CANFD_SUSPEND);
   638	
   639		/* Clear all pending interrupts */
 > 640		writel(~IFI_CANFD_INTERRUPT_SET_IRQ, priv->base + IFI_CANFD_INTERRUPT);
   641	
   642		stcmd = IFI_CANFD_STCMD_ENABLE | IFI_CANFD_STCMD_NORMAL_MODE;
   643	
   644		if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY)
   645			stcmd |= IFI_CANFD_STCMD_BUSMONITOR;
   646	
   647		if (priv->can.ctrlmode & CAN_CTRLMODE_LOOPBACK)
   648			stcmd |= IFI_CANFD_STCMD_LOOPBACK;

---
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