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Message-ID: <202108130719.9yrY4C6p-lkp@intel.com>
Date: Fri, 13 Aug 2021 07:07:23 +0800
From: kernel test robot <lkp@...el.com>
To: James Smart <jsmart2021@...il.com>
Cc: clang-built-linux@...glegroups.com, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Hannes Reinecke <hare@...e.de>,
Daniel Wagner <dwagner@...e.de>,
Ram Vegesna <ram.vegesna@...adcom.com>
Subject: drivers/scsi/elx/libefc/efc_device.c:932:6: warning: cast to smaller
integer type 'enum efc_nport_topology' from 'void *'
Hi James,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: f8fbb47c6e86c0b75f8df864db702c3e3f757361
commit: ebc076b3eddc807729bd81f7bc48e798a3ddc477 scsi: elx: efct: Tie into kernel Kconfig and build process
date: 8 weeks ago
config: x86_64-randconfig-a004-20210813 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 767496d19cb9a1fbba57ff08095faa161998ee36)
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
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ebc076b3eddc807729bd81f7bc48e798a3ddc477
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout ebc076b3eddc807729bd81f7bc48e798a3ddc477
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
>> drivers/scsi/elx/libefc/efc_device.c:932:6: warning: cast to smaller integer type 'enum efc_nport_topology' from 'void *' [-Wvoid-pointer-to-enum-cast]
(enum efc_nport_topology)arg;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
vim +932 drivers/scsi/elx/libefc/efc_device.c
202bfdffae27a5 James Smart 2021-06-01 909
202bfdffae27a5 James Smart 2021-06-01 910 void
202bfdffae27a5 James Smart 2021-06-01 911 __efc_d_wait_topology_notify(struct efc_sm_ctx *ctx,
202bfdffae27a5 James Smart 2021-06-01 912 enum efc_sm_event evt, void *arg)
202bfdffae27a5 James Smart 2021-06-01 913 {
202bfdffae27a5 James Smart 2021-06-01 914 int rc;
202bfdffae27a5 James Smart 2021-06-01 915 struct efc_node *node = ctx->app;
202bfdffae27a5 James Smart 2021-06-01 916
202bfdffae27a5 James Smart 2021-06-01 917 efc_node_evt_set(ctx, evt, __func__);
202bfdffae27a5 James Smart 2021-06-01 918
202bfdffae27a5 James Smart 2021-06-01 919 node_sm_trace();
202bfdffae27a5 James Smart 2021-06-01 920
202bfdffae27a5 James Smart 2021-06-01 921 switch (evt) {
202bfdffae27a5 James Smart 2021-06-01 922 case EFC_EVT_ENTER:
202bfdffae27a5 James Smart 2021-06-01 923 efc_node_hold_frames(node);
202bfdffae27a5 James Smart 2021-06-01 924 break;
202bfdffae27a5 James Smart 2021-06-01 925
202bfdffae27a5 James Smart 2021-06-01 926 case EFC_EVT_EXIT:
202bfdffae27a5 James Smart 2021-06-01 927 efc_node_accept_frames(node);
202bfdffae27a5 James Smart 2021-06-01 928 break;
202bfdffae27a5 James Smart 2021-06-01 929
202bfdffae27a5 James Smart 2021-06-01 930 case EFC_EVT_NPORT_TOPOLOGY_NOTIFY: {
202bfdffae27a5 James Smart 2021-06-01 931 enum efc_nport_topology topology =
202bfdffae27a5 James Smart 2021-06-01 @932 (enum efc_nport_topology)arg;
202bfdffae27a5 James Smart 2021-06-01 933
202bfdffae27a5 James Smart 2021-06-01 934 WARN_ON(node->nport->domain->attached);
202bfdffae27a5 James Smart 2021-06-01 935
202bfdffae27a5 James Smart 2021-06-01 936 WARN_ON(node->send_ls_acc != EFC_NODE_SEND_LS_ACC_PLOGI);
202bfdffae27a5 James Smart 2021-06-01 937
202bfdffae27a5 James Smart 2021-06-01 938 node_printf(node, "topology notification, topology=%d\n",
202bfdffae27a5 James Smart 2021-06-01 939 topology);
202bfdffae27a5 James Smart 2021-06-01 940
202bfdffae27a5 James Smart 2021-06-01 941 /* At the time the PLOGI was received, the topology was unknown,
202bfdffae27a5 James Smart 2021-06-01 942 * so we didn't know which node would perform the domain attach:
202bfdffae27a5 James Smart 2021-06-01 943 * 1. The node from which the PLOGI was sent (p2p) or
202bfdffae27a5 James Smart 2021-06-01 944 * 2. The node to which the FLOGI was sent (fabric).
202bfdffae27a5 James Smart 2021-06-01 945 */
202bfdffae27a5 James Smart 2021-06-01 946 if (topology == EFC_NPORT_TOPO_P2P) {
202bfdffae27a5 James Smart 2021-06-01 947 /* if this is p2p, need to attach to the domain using
202bfdffae27a5 James Smart 2021-06-01 948 * the d_id from the PLOGI received
202bfdffae27a5 James Smart 2021-06-01 949 */
202bfdffae27a5 James Smart 2021-06-01 950 efc_domain_attach(node->nport->domain,
202bfdffae27a5 James Smart 2021-06-01 951 node->ls_acc_did);
202bfdffae27a5 James Smart 2021-06-01 952 }
202bfdffae27a5 James Smart 2021-06-01 953 /* else, if this is fabric, the domain attach
202bfdffae27a5 James Smart 2021-06-01 954 * should be performed by the fabric node (node sending FLOGI);
202bfdffae27a5 James Smart 2021-06-01 955 * just wait for attach to complete
202bfdffae27a5 James Smart 2021-06-01 956 */
202bfdffae27a5 James Smart 2021-06-01 957
202bfdffae27a5 James Smart 2021-06-01 958 efc_node_transition(node, __efc_d_wait_domain_attach, NULL);
202bfdffae27a5 James Smart 2021-06-01 959 break;
202bfdffae27a5 James Smart 2021-06-01 960 }
202bfdffae27a5 James Smart 2021-06-01 961 case EFC_EVT_DOMAIN_ATTACH_OK:
202bfdffae27a5 James Smart 2021-06-01 962 WARN_ON(!node->nport->domain->attached);
202bfdffae27a5 James Smart 2021-06-01 963 node_printf(node, "domain attach ok\n");
202bfdffae27a5 James Smart 2021-06-01 964 /* sm: / efc_node_attach */
202bfdffae27a5 James Smart 2021-06-01 965 rc = efc_node_attach(node);
202bfdffae27a5 James Smart 2021-06-01 966 efc_node_transition(node, __efc_d_wait_node_attach, NULL);
202bfdffae27a5 James Smart 2021-06-01 967 if (rc < 0)
202bfdffae27a5 James Smart 2021-06-01 968 efc_node_post_event(node,
202bfdffae27a5 James Smart 2021-06-01 969 EFC_EVT_NODE_ATTACH_FAIL, NULL);
202bfdffae27a5 James Smart 2021-06-01 970
202bfdffae27a5 James Smart 2021-06-01 971 break;
202bfdffae27a5 James Smart 2021-06-01 972
202bfdffae27a5 James Smart 2021-06-01 973 default:
202bfdffae27a5 James Smart 2021-06-01 974 __efc_d_common(__func__, ctx, evt, arg);
202bfdffae27a5 James Smart 2021-06-01 975 }
202bfdffae27a5 James Smart 2021-06-01 976 }
202bfdffae27a5 James Smart 2021-06-01 977
:::::: The code at line 932 was first introduced by commit
:::::: 202bfdffae27a50d6fae0a259cde1333d9833127 scsi: elx: libefc: FC node ELS and state handling
:::::: TO: James Smart <jsmart2021@...il.com>
:::::: CC: Martin K. Petersen <martin.petersen@...cle.com>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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