make coccicheck COCCI=$PWD/scripts/coccinelle/api/device_attr_show.cocci`
complians some warnnings as following[1]:

Not sure if someone had tried these fixes, feel free to ignore this
patch set if we have come to a *NOT-FIX* conclusion before :)

This patch set also fix a few snprintf() beside coccicheck reported.
For example, some thing like
xxx_show() {
	rc = snprintf();
...
	return rc;
}

TODOs:
1. Fix other abused cases that coccicheck has not detected. For
example,  ./drivers/scsi/scsi_transport_fc.c has other places using
snprint inside the macro.
2. Improve device_attr_show.cocci to detect sprintf() and fix them

[1]
$ make coccicheck COCCI=$PWD/scripts/coccinelle/api/device_attr_show.cocci
...
./arch/arm/mm/cache-l2x0-pmu.c:346:8-16: WARNING: use scnprintf or sprintf
./arch/x86/events/amd/core.c:1282:8-16: WARNING: use scnprintf or sprintf
./arch/x86/events/core.c:1895:11-19: WARNING: use scnprintf or sprintf
./arch/x86/events/core.c:2542:8-16: WARNING: use scnprintf or sprintf
./arch/x86/events/core.c:2600:8-16: WARNING: use scnprintf or sprintf
./arch/x86/events/intel/core.c:5496:8-16: WARNING: use scnprintf or sprintf
./arch/x86/events/intel/core.c:5530:8-16: WARNING: use scnprintf or sprintf
./arch/x86/events/intel/core.c:5546:8-16: WARNING: use scnprintf or sprintf
./arch/x86/events/intel/pt.c:99:8-16: WARNING: use scnprintf or sprintf
./drivers/bus/fsl-mc/fsl-mc-bus.c:205:8-16: WARNING: use scnprintf or sprintf
./drivers/edac/edac_mc_sysfs.c:210:8-16: WARNING: use scnprintf or sprintf
./drivers/edac/edac_mc_sysfs.c:518:8-16: WARNING: use scnprintf or sprintf
./drivers/fsi/fsi-master-ast-cf.c:1086:8-16: WARNING: use scnprintf or sprintf
./drivers/fsi/fsi-master-gpio.c:721:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:558:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:602:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:792:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:822:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:852:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:882:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:912:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-lenovo.c:941:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-picolcd_core.c:259:9-17: WARNING: use scnprintf or sprintf
./drivers/hid/hid-picolcd_core.c:304:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-isku.c:64:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kone.c:403:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kone.c:412:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kone.c:435:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kone.c:444:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kone.c:454:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kone.c:556:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-koneplus.c:245:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-koneplus.c:312:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kovaplus.c:275:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kovaplus.c:328:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kovaplus.c:337:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kovaplus.c:347:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-kovaplus.c:368:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-pyra.c:286:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-pyra.c:303:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-roccat-pyra.c:324:8-16: WARNING: use scnprintf or sprintf
./drivers/hid/hid-sensor-custom.c:375:10-18: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3100:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3116:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3132:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3145:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3159:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3173:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3186:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3198:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3211:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3224:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3237:8-16: WARNING: use scnprintf or sprintf
./drivers/message/fusion/mptscsih.c:3250:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:211:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:222:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:233:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:244:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:254:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:263:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:272:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:282:9-17: WARNING: use scnprintf or sprintf
./drivers/most/core.c:297:10-18: WARNING: use scnprintf or sprintf
./drivers/most/core.c:309:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:318:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:326:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:398:8-16: WARNING: use scnprintf or sprintf
./drivers/most/core.c:409:9-17: WARNING: use scnprintf or sprintf
./drivers/platform/mellanox/mlxbf-bootctl.c:466:8-16: WARNING: use scnprintf or sprintf
./drivers/platform/mellanox/mlxbf-bootctl.c:584:8-16: WARNING: use scnprintf or sprintf
./drivers/platform/mellanox/mlxbf-bootctl.c:635:8-16: WARNING: use scnprintf or sprintf
./drivers/platform/mellanox/mlxbf-bootctl.c:686:8-16: WARNING: use scnprintf or sprintf
./drivers/platform/mellanox/mlxbf-bootctl.c:737:8-16: WARNING: use scnprintf or sprintf
./drivers/platform/mellanox/mlxbf-bootctl.c:788:8-16: WARNING: use scnprintf or sprintf
./drivers/platform/mellanox/mlxbf-bootctl.c:839:8-16: WARNING: use scnprintf or sprintf
./drivers/ptp/ptp_sysfs.c:27:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/53c700.c:2074:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aacraid/linit.c:1299:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aacraid/linit.c:1325:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aacraid/linit.c:1332:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aacraid/linit.c:561:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/aacraid/linit.c:588:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aic94xx/aic94xx_init.c:267:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aic94xx/aic94xx_init.c:276:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aic94xx/aic94xx_init.c:284:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/aic94xx/aic94xx_init.c:455:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:261:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:273:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:285:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:297:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:309:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:322:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:335:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:348:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:361:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/arcmsr/arcmsr_attr.c:374:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/be2iscsi/be_mgmt.c:1145:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/be2iscsi/be_mgmt.c:1164:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/be2iscsi/be_mgmt.c:1251:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/be2iscsi/be_mgmt.c:1280:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/fcoe/fcoe_sysfs.c:253:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/fcoe/fcoe_sysfs.c:268:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/fcoe/fcoe_sysfs.c:376:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/fnic/fnic_attrs.c:17:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/fnic/fnic_attrs.c:23:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/fnic/fnic_attrs.c:31:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:528:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:538:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:549:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:561:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:645:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:724:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:746:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:775:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:799:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:898:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hpsa.c:908:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hptiop.c:1114:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/hptiop.c:1123:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3483:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3493:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3503:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3513:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3522:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi/ibmvfc.c:3530:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:3619:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:3625:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c:3633:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/isci/init.c:140:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/megaraid/megaraid_sas_base.c:3336:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/megaraid/megaraid_sas_base.c:3382:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/megaraid/megaraid_sas_base.c:3389:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/megaraid/megaraid_sas_base.c:3399:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/megaraid/megaraid_sas_base.c:3409:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/megaraid/megaraid_sas_base.c:3419:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/megaraid/megaraid_sas_base.c:3473:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2825:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2850:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2873:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2893:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2912:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2932:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2952:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2971:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:2990:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3012:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3034:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3055:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3077:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3097:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3133:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3170:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3198:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3320:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3407:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3828:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3848:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:3996:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:4018:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/mpt3sas/mpt3sas_ctl.c:4056:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrb.c:1770:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/myrb.c:1889:10-18: WARNING: use scnprintf or sprintf
./drivers/scsi/myrb.c:1906:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/myrb.c:2143:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrb.c:2153:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrb.c:2163:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1061:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1089:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1193:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1306:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1316:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1391:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1401:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1411:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1421:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:1491:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/myrs.c:942:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/ncr53c8xx.c:8034:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/pcmcia/sym53c500_cs.c:627:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/pm8001/pm8001_ctl.c:883:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/pmcraid.c:3541:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/pmcraid.c:3602:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/pmcraid.c:3635:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:159:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:173:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:181:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:190:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:200:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:210:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:223:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:235:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:247:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:256:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:264:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:273:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:281:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:303:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/qla4xxx/ql4_attr.c:312:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:1112:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:1202:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:231:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:277:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:327:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:385:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:402:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:680:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:689:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:701:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:722:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:858:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:873:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:953:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_sysfs.c:979:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1123:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1218:10-18: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1286:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1304:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1665:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1891:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1915:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:1967:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_fc.c:2000:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_sas.c:1180:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_sas.c:525:9-17: WARNING: use scnprintf or sprintf
./drivers/scsi/scsi_transport_sas.c:572:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/snic/snic_attrs.c:16:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/snic/snic_attrs.c:26:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/snic/snic_attrs.c:35:8-16: WARNING: use scnprintf or sprintf
./drivers/scsi/snic/snic_attrs.c:48:8-16: WARNING: use scnprintf or sprintf
./drivers/video/fbdev/uvesafb.c:1549:8-16: WARNING: use scnprintf or sprintf
./kernel/cpu.c:3013:8-16: WARNING: use scnprintf or sprintf
./kernel/cpu.c:3026:8-16: WARNING: use scnprintf or sprintf

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Li Zhijian (42):
  coccinelle: device_attr_show.cocci: update description and warning
    message
  arch/arm/mm: Convert snprintf to sysfs_emit
  arch/x86/events/amd: Convert snprintf to sysfs_emit
  arch/x86/events/core: Convert snprintf to sysfs_emit
  arch/x86/events/intel: Convert snprintf to sysfs_emit
  drivers/bus/fsl-mc: Convert snprintf to sysfs_emit
  drivers/edac: Convert snprintf to sysfs_emit
  drivers/fsi: Convert snprintf to sysfs_emit
  drivers/hid/hid-lenovo: Convert snprintf to sysfs_emit
  drivers/hid/hid-roccat-*: Convert snprintf to sysfs_emit
  drivers/hid: Convert snprintf to sysfs_emit
  drivers/message/fusion: Convert snprintf to sysfs_emit
  drivers/most: Convert snprintf to sysfs_emit
  drivers/platform/mellanox: Convert snprintf to sysfs_emit
  drivers/ptp: Convert snprintf to sysfs_emit
  drivers/scsi/53c700: Convert snprintf to sysfs_emit
  drivers/scsi/aacraid: Convert snprintf to sysfs_emit
  drivers/scsi/aic94xx: Convert snprintf to sysfs_emit
  drivers/scsi/arcmsr: Convert snprintf to sysfs_emit
  drivers/scsi/be2iscsi: Convert snprintf to sysfs_emit
  drivers/scsi/fcoe: Convert snprintf to sysfs_emit
  drivers/scsi/fnic: Convert snprintf to sysfs_emit
  drivers/scsi/hpsa: Convert snprintf to sysfs_emit
  drivers/scsi/hptiop: Convert snprintf to sysfs_emit
  drivers/scsi/ibmvscsi: Convert snprintf to sysfs_emit
  drivers/scsi/ibmvscsi_tgt: Convert snprintf to sysfs_emit
  drivers/scsi/isci: Convert snprintf to sysfs_emit
  drivers/scsi/megaraid: Convert snprintf to sysfs_emit
  drivers/scsi/mpt3sas: Convert snprintf to sysfs_emit
  drivers/scsi/myrb: Convert snprintf to sysfs_emit
  drivers/scsi/myrs: Convert snprintf to sysfs_emit
  drivers/scsi/ncr53c8xx: Convert snprintf to sysfs_emit
  drivers/scsi/pcmcia/sym53c500_cs: Convert snprintf to sysfs_emit
  drivers/scsi/pm8001: Convert snprintf to sysfs_emit
  drivers/scsi/pmcraid: Convert snprintf to sysfs_emit
  drivers/scsi/qla4xxx/ql4_attr: Convert snprintf to sysfs_emit
  drivers/scsi/scsi_sysfs: Convert snprintf to sysfs_emit
  drivers/scsi/scsi_transport_fc: Convert snprintf to sysfs_emit
  drivers/scsi/scsi_transport_sas: Convert snprintf to sysfs_emit
  drivers/scsi/snic/snic_attrs: Convert snprintf to sysfs_emit
  drivers/video/fbdev/uvesafb: Convert snprintf to sysfs_emit
  kernel/cpu: Convert snprintf to sysfs_emit

 arch/arm/mm/cache-l2x0-pmu.c                  |  2 +-
 arch/x86/events/amd/core.c                    |  2 +-
 arch/x86/events/core.c                        |  6 +-
 arch/x86/events/intel/core.c                  |  6 +-
 arch/x86/events/intel/pt.c                    |  2 +-
 drivers/bus/fsl-mc/fsl-mc-bus.c               |  2 +-
 drivers/edac/edac_mc_sysfs.c                  |  5 +-
 drivers/fsi/fsi-master-ast-cf.c               |  3 +-
 drivers/fsi/fsi-master-gpio.c                 |  3 +-
 drivers/hid/hid-lenovo.c                      | 19 +++---
 drivers/hid/hid-picolcd_core.c                |  6 +-
 drivers/hid/hid-roccat-isku.c                 |  2 +-
 drivers/hid/hid-roccat-kone.c                 | 12 ++--
 drivers/hid/hid-roccat-koneplus.c             |  4 +-
 drivers/hid/hid-roccat-kovaplus.c             | 10 +--
 drivers/hid/hid-roccat-pyra.c                 |  6 +-
 drivers/hid/hid-sensor-custom.c               |  3 +-
 drivers/message/fusion/mptscsih.c             | 25 ++++----
 drivers/most/core.c                           | 61 +++++++++----------
 drivers/platform/mellanox/mlxbf-bootctl.c     | 14 ++---
 drivers/ptp/ptp_sysfs.c                       |  3 +-
 drivers/scsi/53c700.c                         |  2 +-
 drivers/scsi/aacraid/linit.c                  | 17 +++---
 drivers/scsi/aic94xx/aic94xx_init.c           | 15 +++--
 drivers/scsi/arcmsr/arcmsr_attr.c             | 40 +++---------
 drivers/scsi/be2iscsi/be_mgmt.c               | 20 +++---
 drivers/scsi/fcoe/fcoe_sysfs.c                |  8 +--
 drivers/scsi/fnic/fnic_attrs.c                |  7 +--
 drivers/scsi/hpsa.c                           | 36 +++++------
 drivers/scsi/hptiop.c                         |  4 +-
 drivers/scsi/ibmvscsi/ibmvfc.c                | 22 +++----
 drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c      |  6 +-
 drivers/scsi/isci/init.c                      |  2 +-
 drivers/scsi/megaraid/megaraid_sas_base.c     | 15 +++--
 drivers/scsi/mpt3sas/mpt3sas_ctl.c            | 60 +++++++++---------
 drivers/scsi/myrb.c                           | 38 ++++++------
 drivers/scsi/myrs.c                           | 56 ++++++++---------
 drivers/scsi/ncr53c8xx.c                      |  2 +-
 drivers/scsi/pcmcia/sym53c500_cs.c            |  2 +-
 drivers/scsi/pm8001/pm8001_ctl.c              |  6 +-
 drivers/scsi/pmcraid.c                        | 11 ++--
 drivers/scsi/qla4xxx/ql4_attr.c               | 48 +++++++--------
 drivers/scsi/scsi_sysfs.c                     | 34 +++++------
 drivers/scsi/scsi_transport_fc.c              | 34 +++++------
 drivers/scsi/scsi_transport_sas.c             | 22 +++----
 drivers/scsi/snic/snic_attrs.c                | 10 +--
 drivers/video/fbdev/uvesafb.c                 |  2 +-
 kernel/cpu.c                                  |  4 +-
 scripts/coccinelle/api/device_attr_show.cocci | 10 ++-
 49 files changed, 343 insertions(+), 386 deletions(-)

-- 
2.29.2

On Tue, 16 Jan 2024 12:10:47 +0800, Li Zhijian wrote:

> make coccicheck COCCI=$PWD/scripts/coccinelle/api/device_attr_show.cocci`
> complians some warnnings as following[1]:
> 
> Not sure if someone had tried these fixes, feel free to ignore this
> patch set if we have come to a *NOT-FIX* conclusion before :)
> 
> This patch set also fix a few snprintf() beside coccicheck reported.
> For example, some thing like
> xxx_show() {
> 	rc = snprintf();
> ...
> 	return rc;
> }
> 
> [...]

Applied to 6.9/scsi-queue, thanks!

[22/42] drivers/scsi/fnic: Convert snprintf to sysfs_emit
        https://git.kernel.org/mkp/scsi/c/1ad717c92925
[25/42] drivers/scsi/ibmvscsi: Convert snprintf to sysfs_emit
        https://git.kernel.org/mkp/scsi/c/29ff822f466e
[26/42] drivers/scsi/ibmvscsi_tgt: Convert snprintf to sysfs_emit
        https://git.kernel.org/mkp/scsi/c/01105c23de42
[27/42] drivers/scsi/isci: Convert snprintf to sysfs_emit
        https://git.kernel.org/mkp/scsi/c/5fbf37e53091
[34/42] drivers/scsi/pm8001: Convert snprintf to sysfs_emit
        https://git.kernel.org/mkp/scsi/c/8179041f801d

-- 
Martin K. Petersen	Oracle Linux Engineering