Hi Adit, [auto build test WARNING on rdma/master] [also build test WARNING on v4.7 next-20160803] [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/Adit-Ranadive/Add-Paravirtual-RDMA-Driver/20160804-075202 base: https://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma.git master config: i386-allmodconfig (attached as .config) compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705 reproduce: # save the attached .config to linux build tree make ARCH=i386 All warnings (new ones prefixed by >>): In file included from arch/x86/include/asm/string.h:2:0, from include/linux/string.h:18, from arch/x86/include/asm/page_32.h:34, from arch/x86/include/asm/page.h:13, from arch/x86/include/asm/thread_info.h:11, from include/linux/thread_info.h:54, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:59, from include/linux/interrupt.h:8, from drivers/infiniband/hw/pvrdma/pvrdma.h:50, from drivers/infiniband/hw/pvrdma/pvrdma_cmd.c:48: drivers/infiniband/hw/pvrdma/pvrdma_cmd.c: In function 'pvrdma_cmd_post': include/linux/kernel.h:742:17: warning: comparison of distinct pointer types lacks a cast (void) (&_min1 == &_min2); \ ^ arch/x86/include/asm/string_32.h:182:48: note: in definition of macro 'memcpy' #define memcpy(t, f, n) __builtin_memcpy(t, f, n) ^ >> drivers/infiniband/hw/pvrdma/pvrdma_cmd.c:76:29: note: in expansion of macro 'min' memcpy(dev->cmd_slot, req, min(PAGE_SIZE, sizeof(*req))); ^~~ vim +/min +76 drivers/infiniband/hw/pvrdma/pvrdma_cmd.c 6bad4475 Adit Ranadive 2016-08-03 42 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 6bad4475 Adit Ranadive 2016-08-03 43 * OF THE POSSIBILITY OF SUCH DAMAGE. 6bad4475 Adit Ranadive 2016-08-03 44 */ 6bad4475 Adit Ranadive 2016-08-03 45 6bad4475 Adit Ranadive 2016-08-03 46 #include <linux/list.h> 6bad4475 Adit Ranadive 2016-08-03 47 6bad4475 Adit Ranadive 2016-08-03 @48 #include "pvrdma.h" 6bad4475 Adit Ranadive 2016-08-03 49 6bad4475 Adit Ranadive 2016-08-03 50 #define PVRDMA_CMD_TIMEOUT 10000 /* ms */ 6bad4475 Adit Ranadive 2016-08-03 51 6bad4475 Adit Ranadive 2016-08-03 52 static inline int pvrdma_cmd_recv(struct pvrdma_dev *dev, 6bad4475 Adit Ranadive 2016-08-03 53 union pvrdma_cmd_resp *resp) 6bad4475 Adit Ranadive 2016-08-03 54 { 6bad4475 Adit Ranadive 2016-08-03 55 dev_dbg(&dev->pdev->dev, "receive response from device\n"); 6bad4475 Adit Ranadive 2016-08-03 56 6bad4475 Adit Ranadive 2016-08-03 57 spin_lock(&dev->cmd_lock); 6bad4475 Adit Ranadive 2016-08-03 58 memcpy(resp, dev->resp_slot, sizeof(*resp)); 6bad4475 Adit Ranadive 2016-08-03 59 spin_unlock(&dev->cmd_lock); 6bad4475 Adit Ranadive 2016-08-03 60 6bad4475 Adit Ranadive 2016-08-03 61 return 0; 6bad4475 Adit Ranadive 2016-08-03 62 } 6bad4475 Adit Ranadive 2016-08-03 63 6bad4475 Adit Ranadive 2016-08-03 64 int 6bad4475 Adit Ranadive 2016-08-03 65 pvrdma_cmd_post(struct pvrdma_dev *dev, union pvrdma_cmd_req *req, 6bad4475 Adit Ranadive 2016-08-03 66 union pvrdma_cmd_resp *resp) 6bad4475 Adit Ranadive 2016-08-03 67 { 6bad4475 Adit Ranadive 2016-08-03 68 int err; 6bad4475 Adit Ranadive 2016-08-03 69 6bad4475 Adit Ranadive 2016-08-03 70 dev_dbg(&dev->pdev->dev, "post request to device\n"); 6bad4475 Adit Ranadive 2016-08-03 71 6bad4475 Adit Ranadive 2016-08-03 72 /* Serializiation */ 6bad4475 Adit Ranadive 2016-08-03 73 down(&dev->cmd_sema); 6bad4475 Adit Ranadive 2016-08-03 74 6bad4475 Adit Ranadive 2016-08-03 75 spin_lock(&dev->cmd_lock); 6bad4475 Adit Ranadive 2016-08-03 @76 memcpy(dev->cmd_slot, req, min(PAGE_SIZE, sizeof(*req))); 6bad4475 Adit Ranadive 2016-08-03 77 spin_unlock(&dev->cmd_lock); 6bad4475 Adit Ranadive 2016-08-03 78 6bad4475 Adit Ranadive 2016-08-03 79 init_completion(&dev->cmd_done); :::::: The code at line 76 was first introduced by commit :::::: 6bad4475e9e3d236cf6e4b349a8e66fa9eb610f3 IB/pvrdma: Add device command support :::::: TO: Adit Ranadive <aditr@xxxxxxxxxx> :::::: CC: 0day robot <fengguang.wu@xxxxxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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