libata-pmp-prep: implement EH fast-fail path
If PMP itself becomes inaccessible while trying to link a downstream link, spending time to recover the downstream link doesn't make any sense. Make EH skip retry and fail fast if -ERESTART is received. Signed-off-by: Tejun Heo <htejun@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
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@ -2050,7 +2050,7 @@ int ata_eh_reset(struct ata_link *link, int classify,
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if (rc == -EAGAIN)
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if (rc == -EAGAIN)
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rc = 0;
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rc = 0;
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if (rc && try < ARRAY_SIZE(ata_eh_reset_timeouts)) {
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if (rc && rc != -ERESTART && try < ARRAY_SIZE(ata_eh_reset_timeouts)) {
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unsigned long now = jiffies;
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unsigned long now = jiffies;
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if (time_before(now, deadline)) {
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if (time_before(now, deadline)) {
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