forked from Minki/linux
nvme: reduce checks for zero command effects
For passthrough I/O commands, effects are usually to be zero. nvme_passthrough_end() does three checks in futility for this case. Bail out of function-call/checks. Signed-off-by: Kanchan Joshi <joshi.k@samsung.com> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
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@ -1137,7 +1137,8 @@ void nvme_execute_passthru_rq(struct request *rq)
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effects = nvme_passthru_start(ctrl, ns, cmd->common.opcode);
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blk_execute_rq(disk, rq, 0);
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nvme_passthru_end(ctrl, effects);
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if (effects) /* nothing to be done for zero cmd effects */
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nvme_passthru_end(ctrl, effects);
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}
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EXPORT_SYMBOL_NS_GPL(nvme_execute_passthru_rq, NVME_TARGET_PASSTHRU);
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