mirror of https://gitee.com/openkylin/linux.git
d9b43a10f0
Change st driver to allow enabling or disabling debug output via sysfs file /sys/bus/scsi/drivers/st/debug_flag. Previously the only way to enable debug output was: 1. loading the driver with the module parameter debug_flag=1 2. an ioctl call (this method was also the only way to dynamically disable debug output). To use the ioctl you need a second tape drive (if you are actively testing the first tape drive) since a second process cannot open the first tape drive if it is in use. The this change is only functional if the value of the macro DEBUG in st.c is a non-zero value (which it is by default). Signed-off-by: Shane Seymour <shane.seymour@hpe.com> Reviewed-by: Laurence Oberman <oberman.l@gmail.com> Acked-by: Kai Mäkisara <kai.makisara@kolumbus.fi> Signed-off-by: James Bottomley <JBottomley@Odin.com> |
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| .. | ||
| scsi_transport_srp | ||
| 00-INDEX | ||
| 53c700.txt | ||
| BusLogic.txt | ||
| ChangeLog.1992-1997 | ||
| ChangeLog.arcmsr | ||
| ChangeLog.ips | ||
| ChangeLog.lpfc | ||
| ChangeLog.megaraid | ||
| ChangeLog.megaraid_sas | ||
| ChangeLog.ncr53c8xx | ||
| ChangeLog.sym53c8xx | ||
| ChangeLog.sym53c8xx_2 | ||
| FlashPoint.txt | ||
| LICENSE.FlashPoint | ||
| LICENSE.qla2xxx | ||
| LICENSE.qla4xxx | ||
| Mylex.txt | ||
| NinjaSCSI.txt | ||
| aacraid.txt | ||
| advansys.txt | ||
| aha152x.txt | ||
| aic7xxx.txt | ||
| aic79xx.txt | ||
| arcmsr_spec.txt | ||
| bfa.txt | ||
| bnx2fc.txt | ||
| cxgb3i.txt | ||
| dc395x.txt | ||
| dpti.txt | ||
| dtc3x80.txt | ||
| g_NCR5380.txt | ||
| hpsa.txt | ||
| hptiop.txt | ||
| in2000.txt | ||
| libsas.txt | ||
| link_power_management_policy.txt | ||
| lpfc.txt | ||
| megaraid.txt | ||
| ncr53c8xx.txt | ||
| osd.txt | ||
| osst.txt | ||
| ppa.txt | ||
| qlogicfas.txt | ||
| scsi-changer.txt | ||
| scsi-generic.txt | ||
| scsi-parameters.txt | ||
| scsi.txt | ||
| scsi_eh.txt | ||
| scsi_fc_transport.txt | ||
| scsi_mid_low_api.txt | ||
| st.txt | ||
| sym53c8xx_2.txt | ||
| sym53c500_cs.txt | ||
| tmscsim.txt | ||
| ufs.txt | ||
| wd719x.txt | ||