Re: [PATCH v4 4/6] infiniband: cxgb4: Eliminate duplicate barriers on weakly-ordered archs

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On 2018-03-22 02:44, kbuild test robot wrote:
Hi Sinan,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.16-rc6 next-20180321]
[if your patch is applied to the wrong git tree, please drop us a note
to help improve the system]

url:
https://github.com/0day-ci/linux/commits/Sinan-Kaya/ib-Eliminate-duplicate-barriers-on-weakly-ordered-archs/20180321-091659
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-gcc (GCC) 7.2.0
reproduce:
        wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross
-O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        make.cross ARCH=xtensa


Jason,

Can you remove the writeq change if it is too late for me to fix?

This is an infrastructural issue on xtensa arch.

Probably, it won't get fixed today.

Sinan


All errors (new ones prefixed by >>):

   In file included from drivers/infiniband/hw/cxgb4/iw_cxgb4.h:73:0,
                    from drivers/infiniband/hw/cxgb4/device.c:40:
   drivers/infiniband/hw/cxgb4/t4.h: In function 'pio_copy':
drivers/infiniband/hw/cxgb4/t4.h:460:3: error: implicit declaration of function 'writeq_relaxed'; did you mean 'writel_relaxed'? [-Werror=implicit-function-declaration]
      writeq_relaxed(*src, dst);
      ^~~~~~~~~~~~~~
      writel_relaxed
   cc1: some warnings being treated as errors

vim +460 drivers/infiniband/hw/cxgb4/t4.h

   450
   451	/* This function copies 64 byte coalesced work request to memory
   452	 * mapped BAR2 space. For coalesced WRs, the SGE fetches data
   453	 * from the FIFO instead of from Host.
   454	 */
   455	static inline void pio_copy(u64 __iomem *dst, u64 *src)
   456	{
   457		int count = 8;
   458
   459		while (count) {
 > 460			writeq_relaxed(*src, dst);
   461			src++;
   462			dst++;
   463			count--;
   464		}
   465	}
   466

---
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