[SCSI] qla2xxx: Limit excessive DPC cycles.
The 'continue' cases neglected to place the thread in an interruptible state, causing the DPC routine to wake immediately. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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@ -3445,27 +3445,21 @@ qla2x00_do_dpc(void *data)
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schedule();
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__set_current_state(TASK_RUNNING);
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ql_dbg(ql_dbg_dpc, base_vha, 0x4001,
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"DPC handler waking up.\n");
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ql_dbg(ql_dbg_dpc, base_vha, 0x4002,
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"dpc_flags=0x%lx.\n", base_vha->dpc_flags);
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/* Initialization not yet finished. Don't do anything yet. */
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if (!base_vha->flags.init_done)
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continue;
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if (!base_vha->flags.init_done || ha->flags.mbox_busy)
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goto end_loop;
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if (ha->flags.eeh_busy) {
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ql_dbg(ql_dbg_dpc, base_vha, 0x4003,
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"eeh_busy=%d.\n", ha->flags.eeh_busy);
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continue;
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goto end_loop;
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}
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ha->dpc_active = 1;
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if (ha->flags.mbox_busy) {
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ha->dpc_active = 0;
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continue;
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}
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ql_dbg(ql_dbg_dpc, base_vha, 0x4001,
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"DPC handler waking up.\n");
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ql_dbg(ql_dbg_dpc, base_vha, 0x4002,
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"dpc_flags=0x%lx.\n", base_vha->dpc_flags);
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qla2x00_do_work(base_vha);
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@ -3607,6 +3601,7 @@ qla2x00_do_dpc(void *data)
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qla2x00_do_dpc_all_vps(base_vha);
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ha->dpc_active = 0;
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end_loop:
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set_current_state(TASK_INTERRUPTIBLE);
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} /* End of while(1) */
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__set_current_state(TASK_RUNNING);
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