Issue: when user issues diag register command from application with required size and if driver unable to allocate the memory then it will fail the register command. While failing the register command currently driver is not clearing MPT3_CMD_PENDING bit in ctl_cmds.status variable which was set before trying to allocate the memory. As this bit is set so subsequent register command will be failed with BUSY status even when user wants to register the trace buffer will less memory. Fix: Clear MPT3_CMD_PENDING bit in ctl_cmds.status before returning the diag register command with no memory status. Signed-off-by: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx> --- drivers/scsi/mpt3sas/mpt3sas_ctl.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/scsi/mpt3sas/mpt3sas_ctl.c b/drivers/scsi/mpt3sas/mpt3sas_ctl.c index 76ca416..a195cae 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_ctl.c +++ b/drivers/scsi/mpt3sas/mpt3sas_ctl.c @@ -1591,7 +1591,8 @@ _ctl_diag_register_2(struct MPT3SAS_ADAPTER *ioc, ioc_err(ioc, "%s: failed allocating memory for diag buffers, requested size(%d)\n", __func__, request_data_sz); mpt3sas_base_free_smid(ioc, smid); - return -ENOMEM; + rc = -ENOMEM; + goto out; } ioc->diag_buffer[buffer_type] = request_data; ioc->diag_buffer_sz[buffer_type] = request_data_sz; -- 1.8.3.1
