diff options
| -rw-r--r-- | Documentation/kernel-parameters.txt | 3 | ||||
| -rw-r--r-- | drivers/ata/libata-core.c | 1 | ||||
| -rw-r--r-- | drivers/ata/libata-eh.c | 2 | ||||
| -rw-r--r-- | include/linux/libata.h | 1 |
4 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index ad7e2e5088c..2cb2d81a51a 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -1350,6 +1350,9 @@ bytes respectively. Such letter suffixes can also be entirely omitted. * nohrst, nosrst, norst: suppress hard, soft and both resets. + * rstonce: only attempt one reset during + hot-unplug link recovery + * dump_id: dump IDENTIFY data. If there are multiple matching configurations changing diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c index fadd5866d40..70964aabcb8 100644 --- a/drivers/ata/libata-core.c +++ b/drivers/ata/libata-core.c @@ -6387,6 +6387,7 @@ static int __init ata_parse_force_one(char **cur, { "nohrst", .lflags = ATA_LFLAG_NO_HRST }, { "nosrst", .lflags = ATA_LFLAG_NO_SRST }, { "norst", .lflags = ATA_LFLAG_NO_HRST | ATA_LFLAG_NO_SRST }, + { "rstonce", .lflags = ATA_LFLAG_RST_ONCE }, }; char *start = *cur, *p = *cur; char *id, *val, *endp; diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c index 7d4535e989b..100428dde42 100644 --- a/drivers/ata/libata-eh.c +++ b/drivers/ata/libata-eh.c @@ -2623,6 +2623,8 @@ int ata_eh_reset(struct ata_link *link, int classify, */ while (ata_eh_reset_timeouts[max_tries] != ULONG_MAX) max_tries++; + if (link->flags & ATA_LFLAG_RST_ONCE) + max_tries = 1; if (link->flags & ATA_LFLAG_NO_HRST) hardreset = NULL; if (link->flags & ATA_LFLAG_NO_SRST) diff --git a/include/linux/libata.h b/include/linux/libata.h index 64f90e17e51..31a2853e953 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -184,6 +184,7 @@ enum { ATA_LFLAG_DISABLED = (1 << 6), /* link is disabled */ ATA_LFLAG_SW_ACTIVITY = (1 << 7), /* keep activity stats */ ATA_LFLAG_NO_LPM = (1 << 8), /* disable LPM on this link */ + ATA_LFLAG_RST_ONCE = (1 << 9), /* limit recovery to one reset */ /* struct ata_port flags */ ATA_FLAG_SLAVE_POSS = (1 << 0), /* host supports slave dev */ |