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cxlflash: Remove dual port online dependency

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At present, both ports must be online for the device to
configure properly. Remove this dependency and the unnecessary
internal LUN override logic as well. Additionally, as a refactoring
measure, change the return code variable name to match that used
throughout the driver.

With this change, the card will be able to configure even when the
link is down. At some later point when the link is transitioned to
'up', a link state change interrupt will trigger the port configuration.
Note that despite its void-like behavior, the function was left with a
return code for right now in case its behavior needs to be altered again
in the near future based on testing.

Signed-off-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Manoj N. Kumar <manoj@linux.vnet.ibm.com>
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Reviewed-by: Daniel Axtens <dja@axtens.net>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
This commit is contained in:
Matthew R. Ochs 2015-10-21 15:13:54 -05:00 committed by James Bottomley
parent 16798d3448
commit 964497b3bf
1 changed files with 10 additions and 17 deletions
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27
drivers/scsi/cxlflash/main.c
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@ -1030,7 +1030,7 @@ static int wait_port_offline(u64 *fc_regs, u32 delay_us, u32 nretry)
*/ */
static int afu_set_wwpn(struct afu *afu, int port, u64 *fc_regs, u64 wwpn) static int afu_set_wwpn(struct afu *afu, int port, u64 *fc_regs, u64 wwpn)
{ {
int ret = 0; int rc = 0;
set_port_offline(fc_regs); set_port_offline(fc_regs);
@ -1038,33 +1038,26 @@ static int afu_set_wwpn(struct afu *afu, int port, u64 *fc_regs, u64 wwpn)
FC_PORT_STATUS_RETRY_CNT)) { FC_PORT_STATUS_RETRY_CNT)) {
pr_debug("%s: wait on port %d to go offline timed out\n", pr_debug("%s: wait on port %d to go offline timed out\n",
__func__, port); __func__, port);
ret = -1; /* but continue on to leave the port back online */ rc = -1; /* but continue on to leave the port back online */
} }
if (ret == 0) if (rc == 0)
writeq_be(wwpn, &fc_regs[FC_PNAME / 8]); writeq_be(wwpn, &fc_regs[FC_PNAME / 8]);
/* Always return success after programming WWPN */
rc = 0;
set_port_online(fc_regs); set_port_online(fc_regs);
if (!wait_port_online(fc_regs, FC_PORT_STATUS_RETRY_INTERVAL_US, if (!wait_port_online(fc_regs, FC_PORT_STATUS_RETRY_INTERVAL_US,
FC_PORT_STATUS_RETRY_CNT)) { FC_PORT_STATUS_RETRY_CNT)) {
pr_debug("%s: wait on port %d to go online timed out\n", pr_err("%s: wait on port %d to go online timed out\n",
__func__, port); __func__, port);
ret = -1;
/*
* Override for internal lun!!!
*/
if (afu->internal_lun) {
pr_debug("%s: Overriding port %d online timeout!!!\n",
__func__, port);
ret = 0;
}
} }
pr_debug("%s: returning rc=%d\n", __func__, ret); pr_debug("%s: returning rc=%d\n", __func__, rc);
return ret; return rc;
} }
/** /**