drivers/scsi/qedi/qedi_main.c:1540:13: warning: variable 'page' set but not used
From: kernel test robot
Date: Thu Nov 25 2021 - 14:09:54 EST
Hi Florian,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 5f53fa508db098c9d372423a6dac31c8a5679cdf
commit: 1d987052e32f3554e84a296c4494551bc60f3877 MIPS: BMIPS: Enable PCI Kconfig
date: 2 weeks ago
config: mips-randconfig-c004-20211118 (https://download.01.org/0day-ci/archive/20211126/202111260317.6lzepIX6-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c46becf500df2a7fb4b4fce16178a036c344315a)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d987052e32f3554e84a296c4494551bc60f3877
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 1d987052e32f3554e84a296c4494551bc60f3877
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=mips
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>
All warnings (new ones prefixed by >>):
>> drivers/scsi/qedi/qedi_main.c:1540:13: warning: variable 'page' set but not used [-Wunused-but-set-variable]
dma_addr_t page;
^
>> drivers/scsi/qedi/qedi_main.c:2092:10: warning: format specifies type 'char' but the argument has type 'int' [-Wformat]
SYSFS_FLAG_FW_SEL_BOOT);
^~~~~~~~~~~~~~~~~~~~~~
drivers/scsi/qedi/qedi.h:361:32: note: expanded from macro 'SYSFS_FLAG_FW_SEL_BOOT'
#define SYSFS_FLAG_FW_SEL_BOOT 2
^
drivers/scsi/qedi/qedi_main.c:2259:35: warning: format specifies type 'char' but the argument has type 'int' [-Wformat]
rc = snprintf(buf, 3, "%hhd\n", SYSFS_FLAG_FW_SEL_BOOT);
~~~~ ^~~~~~~~~~~~~~~~~~~~~~
%d
drivers/scsi/qedi/qedi.h:361:32: note: expanded from macro 'SYSFS_FLAG_FW_SEL_BOOT'
#define SYSFS_FLAG_FW_SEL_BOOT 2
^
3 warnings generated.
vim +/page +1540 drivers/scsi/qedi/qedi_main.c
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1534
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1535 static int qedi_alloc_bdq(struct qedi_ctx *qedi)
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1536 {
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1537 int i;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1538 struct scsi_bd *pbl;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1539 u64 *list;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 @1540 dma_addr_t page;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1541
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1542 /* Alloc dma memory for BDQ buffers */
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1543 for (i = 0; i < QEDI_BDQ_NUM; i++) {
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1544 qedi->bdq[i].buf_addr =
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1545 dma_alloc_coherent(&qedi->pdev->dev,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1546 QEDI_BDQ_BUF_SIZE,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1547 &qedi->bdq[i].buf_dma,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1548 GFP_KERNEL);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1549 if (!qedi->bdq[i].buf_addr) {
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1550 QEDI_ERR(&qedi->dbg_ctx,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1551 "Could not allocate BDQ buffer %d.\n", i);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1552 return -ENOMEM;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1553 }
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1554 }
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1555
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1556 /* Alloc dma memory for BDQ page buffer list */
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1557 qedi->bdq_pbl_mem_size = QEDI_BDQ_NUM * sizeof(struct scsi_bd);
fa97c51109867c Nilesh Javali 2018-11-21 1558 qedi->bdq_pbl_mem_size = ALIGN(qedi->bdq_pbl_mem_size, QEDI_PAGE_SIZE);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1559 qedi->rq_num_entries = qedi->bdq_pbl_mem_size / sizeof(struct scsi_bd);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1560
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1561 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN, "rq_num_entries = %d.\n",
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1562 qedi->rq_num_entries);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1563
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1564 qedi->bdq_pbl = dma_alloc_coherent(&qedi->pdev->dev,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1565 qedi->bdq_pbl_mem_size,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1566 &qedi->bdq_pbl_dma, GFP_KERNEL);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1567 if (!qedi->bdq_pbl) {
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1568 QEDI_ERR(&qedi->dbg_ctx, "Could not allocate BDQ PBL.\n");
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1569 return -ENOMEM;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1570 }
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1571
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1572 /*
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1573 * Populate BDQ PBL with physical and virtual address of individual
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1574 * BDQ buffers
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1575 */
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1576 pbl = (struct scsi_bd *)qedi->bdq_pbl;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1577 for (i = 0; i < QEDI_BDQ_NUM; i++) {
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1578 pbl->address.hi =
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1579 cpu_to_le32(QEDI_U64_HI(qedi->bdq[i].buf_dma));
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1580 pbl->address.lo =
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1581 cpu_to_le32(QEDI_U64_LO(qedi->bdq[i].buf_dma));
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1582 QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_CONN,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1583 "pbl [0x%p] pbl->address hi [0x%llx] lo [0x%llx], idx [%d]\n",
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1584 pbl, pbl->address.hi, pbl->address.lo, i);
da09091732aecc Tomer Tayar 2017-12-27 1585 pbl->opaque.iscsi_opaque.reserved_zero[0] = 0;
da09091732aecc Tomer Tayar 2017-12-27 1586 pbl->opaque.iscsi_opaque.reserved_zero[1] = 0;
da09091732aecc Tomer Tayar 2017-12-27 1587 pbl->opaque.iscsi_opaque.reserved_zero[2] = 0;
da09091732aecc Tomer Tayar 2017-12-27 1588 pbl->opaque.iscsi_opaque.opaque = cpu_to_le16(i);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1589 pbl++;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1590 }
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1591
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1592 /* Allocate list of PBL pages */
750afb08ca7131 Luis Chamberlain 2019-01-04 1593 qedi->bdq_pbl_list = dma_alloc_coherent(&qedi->pdev->dev,
fa97c51109867c Nilesh Javali 2018-11-21 1594 QEDI_PAGE_SIZE,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1595 &qedi->bdq_pbl_list_dma,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1596 GFP_KERNEL);
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1597 if (!qedi->bdq_pbl_list) {
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1598 QEDI_ERR(&qedi->dbg_ctx,
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1599 "Could not allocate list of PBL pages.\n");
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1600 return -ENOMEM;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1601 }
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1602
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1603 /*
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1604 * Now populate PBL list with pages that contain pointers to the
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1605 * individual buffers.
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1606 */
fa97c51109867c Nilesh Javali 2018-11-21 1607 qedi->bdq_pbl_list_num_entries = qedi->bdq_pbl_mem_size /
fa97c51109867c Nilesh Javali 2018-11-21 1608 QEDI_PAGE_SIZE;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1609 list = (u64 *)qedi->bdq_pbl_list;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1610 page = qedi->bdq_pbl_list_dma;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1611 for (i = 0; i < qedi->bdq_pbl_list_num_entries; i++) {
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1612 *list = qedi->bdq_pbl_dma;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1613 list++;
fa97c51109867c Nilesh Javali 2018-11-21 1614 page += QEDI_PAGE_SIZE;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1615 }
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1616
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1617 return 0;
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1618 }
ace7f46ba5fde7 Manish Rangankar 2016-12-01 1619
:::::: The code at line 1540 was first introduced by commit
:::::: ace7f46ba5fde7273207c7122b0650ceb72510e0 scsi: qedi: Add QLogic FastLinQ offload iSCSI driver framework.
:::::: TO: Manish Rangankar <manish.rangankar@xxxxxxxxxx>
:::::: CC: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx