Hi Heloise, [auto build test WARNING on linus/master] [also build test WARNING on v4.11-rc8 next-20170426] [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/Heloise/drivers-block-mtip32xx-mtip32xx-change-the-order-of-null-pointer-dereference-validation/20170426-235410 config: x86_64-acpi-redef (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All warnings (new ones prefixed by >>): drivers/block/mtip32xx/mtip32xx.c: In function 'mtip_async_complete': >> drivers/block/mtip32xx/mtip32xx.c:234:2: warning: ISO C90 forbids mixed >> declarations and code [-Wdeclaration-after-statement] struct driver_data *dd = port->dd; ^~~~~~ vim +234 drivers/block/mtip32xx/mtip32xx.c 8f8b8995 Asai Thambi S P 2013-09-11 218 * clears the allocated bit associated with the completed command. 8f8b8995 Asai Thambi S P 2013-09-11 219 * 8f8b8995 Asai Thambi S P 2013-09-11 220 * @port Pointer to the port data structure. 8f8b8995 Asai Thambi S P 2013-09-11 221 * @tag Tag of the command. 8f8b8995 Asai Thambi S P 2013-09-11 222 * @data Pointer to driver_data. 8f8b8995 Asai Thambi S P 2013-09-11 223 * @status Completion status. 8f8b8995 Asai Thambi S P 2013-09-11 224 * 8f8b8995 Asai Thambi S P 2013-09-11 225 * return value 8f8b8995 Asai Thambi S P 2013-09-11 226 * None 8f8b8995 Asai Thambi S P 2013-09-11 227 */ 8f8b8995 Asai Thambi S P 2013-09-11 228 static void mtip_async_complete(struct mtip_port *port, ffc771b3 Jens Axboe 2014-05-09 229 int tag, struct mtip_cmd *cmd, int status) 8f8b8995 Asai Thambi S P 2013-09-11 230 { 6a63892e Heloise 2017-04-25 231 if (unlikely(!port)) 6a63892e Heloise 2017-04-25 232 return; 6a63892e Heloise 2017-04-25 233 ffc771b3 Jens Axboe 2014-05-09 @234 struct driver_data *dd = port->dd; ffc771b3 Jens Axboe 2014-05-09 235 struct request *rq; 8f8b8995 Asai Thambi S P 2013-09-11 236 6a63892e Heloise 2017-04-25 237 if (unlikely(!dd)) 8f8b8995 Asai Thambi S P 2013-09-11 238 return; 8f8b8995 Asai Thambi S P 2013-09-11 239 8f8b8995 Asai Thambi S P 2013-09-11 240 if (unlikely(status == PORT_IRQ_TF_ERR)) { 8f8b8995 Asai Thambi S P 2013-09-11 241 dev_warn(&port->dd->pdev->dev, 8f8b8995 Asai Thambi S P 2013-09-11 242 "Command tag %d failed due to TFE\n", tag); :::::: The code at line 234 was first introduced by commit :::::: ffc771b3ca8b2c03e5e9faa6335b4862108f111f mtip32xx: convert to use blk-mq :::::: TO: Jens Axboe <ax...@fb.com> :::::: CC: Jens Axboe <ax...@fb.com> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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