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cxlflash: Correct spelling, grammar, and alignment mistakes

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There are several spelling and grammar mistakes throughout the
driver. Additionally there are a handful of places where there
are extra lines and unnecessary variables/statements. These are
a nuisance and pollute the driver.

Fix spelling and grammar issues. Update some comments for clarity and
consistency. Remove extra lines and a few unneeded variables/statements.

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: Andrew Donnellan <andrew.donnellan@au1.ibm.com>
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 15:15:06 -05:00 committed by James Bottomley
parent 8e78262328
commit f15fbf8d4e
5 changed files with 38 additions and 48 deletions
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2
drivers/scsi/cxlflash/common.h
View File

@ -105,8 +105,6 @@ struct cxlflash_cfg {
atomic_t scan_host_needed;
struct cxl_afu *cxl_afu;
struct pci_pool *cxlflash_cmd_pool;
struct pci_dev *parent_dev;
atomic_t recovery_threads;

62
drivers/scsi/cxlflash/main.c
View File

@ -34,7 +34,6 @@ MODULE_AUTHOR("Manoj N. Kumar <manoj@linux.vnet.ibm.com>");
MODULE_AUTHOR("Matthew R. Ochs <mrochs@linux.vnet.ibm.com>");
MODULE_LICENSE("GPL");
/**
* cmd_checkout() - checks out an AFU command
* @afu: AFU to checkout from.
@ -730,7 +729,7 @@ static void cxlflash_remove(struct pci_dev *pdev)
case INIT_STATE_SCSI:
cxlflash_term_local_luns(cfg);
scsi_remove_host(cfg->host);
/* Fall through */
/* fall through */
case INIT_STATE_AFU:
term_afu(cfg);
cancel_work_sync(&cfg->work_q);
@ -763,9 +762,7 @@ static int alloc_mem(struct cxlflash_cfg *cfg)
char *buf = NULL;
struct device *dev = &cfg->dev->dev;
/* This allocation is about 12K, i.e. only 1 64k page
* and upto 4 4k pages
*/
/* AFU is ~12k, i.e. only one 64k page or up to four 4k pages */
cfg->afu = (void *)__get_free_pages(GFP_KERNEL | __GFP_ZERO,
get_order(sizeof(struct afu)));
if (unlikely(!cfg->afu)) {
@ -1295,10 +1292,10 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
goto out;
}
/* it is OK to clear AFU status before FC_ERROR */
/* FYI, it is 'okay' to clear AFU status before FC_ERROR */
writeq_be(reg_unmasked, &global->regs.aintr_clear);
/* check each bit that is on */
/* Check each bit that is on */
for (i = 0; reg_unmasked; i++, reg_unmasked = (reg_unmasked >> 1)) {
info = find_ainfo(1ULL << i);
if (((reg_unmasked & 0x1) == 0) || !info)
@ -1311,7 +1308,7 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
readq_be(&global->fc_regs[port][FC_STATUS / 8]));
/*
* do link reset first, some OTHER errors will set FC_ERROR
* Do link reset first, some OTHER errors will set FC_ERROR
* again if cleared before or w/o a reset
*/
if (info->action & LINK_RESET) {
@ -1326,7 +1323,7 @@ static irqreturn_t cxlflash_async_err_irq(int irq, void *data)
reg = readq_be(&global->fc_regs[port][FC_ERROR / 8]);
/*
* since all errors are unmasked, FC_ERROR and FC_ERRCAP
* Since all errors are unmasked, FC_ERROR and FC_ERRCAP
* should be the same and tracing one is sufficient.
*/
@ -1472,23 +1469,22 @@ static void init_pcr(struct cxlflash_cfg *cfg)
for (i = 0; i < MAX_CONTEXT; i++) {
ctrl_map = &afu->afu_map->ctrls[i].ctrl;
/* disrupt any clients that could be running */
/* e. g. clients that survived a master restart */
/* Disrupt any clients that could be running */
/* e.g. clients that survived a master restart */
writeq_be(0, &ctrl_map->rht_start);
writeq_be(0, &ctrl_map->rht_cnt_id);
writeq_be(0, &ctrl_map->ctx_cap);
}
/* copy frequently used fields into afu */
/* Copy frequently used fields into afu */
afu->ctx_hndl = (u16) cxl_process_element(cfg->mcctx);
/* ctx_hndl is 16 bits in CAIA */
afu->host_map = &afu->afu_map->hosts[afu->ctx_hndl].host;
afu->ctrl_map = &afu->afu_map->ctrls[afu->ctx_hndl].ctrl;
/* Program the Endian Control for the master context */
writeq_be(SISL_ENDIAN_CTRL, &afu->host_map->endian_ctrl);
/* initialize cmd fields that never change */
/* Initialize cmd fields that never change */
for (i = 0; i < CXLFLASH_NUM_CMDS; i++) {
afu->cmd[i].rcb.ctx_id = afu->ctx_hndl;
afu->cmd[i].rcb.msi = SISL_MSI_RRQ_UPDATED;
@ -1517,7 +1513,7 @@ static int init_global(struct cxlflash_cfg *cfg)
pr_debug("%s: wwpn0=0x%llX wwpn1=0x%llX\n", __func__, wwpn[0], wwpn[1]);
/* set up RRQ in AFU for master issued cmds */
/* Set up RRQ in AFU for master issued cmds */
writeq_be((u64) afu->hrrq_start, &afu->host_map->rrq_start);
writeq_be((u64) afu->hrrq_end, &afu->host_map->rrq_end);
@ -1530,9 +1526,9 @@ static int init_global(struct cxlflash_cfg *cfg)
/* checker on if dual afu */
writeq_be(reg, &afu->afu_map->global.regs.afu_config);
/* global port select: select either port */
/* Global port select: select either port */
if (afu->internal_lun) {
/* only use port 0 */
/* Only use port 0 */
writeq_be(PORT0, &afu->afu_map->global.regs.afu_port_sel);
num_ports = NUM_FC_PORTS - 1;
} else {
@ -1541,15 +1537,15 @@ static int init_global(struct cxlflash_cfg *cfg)
}
for (i = 0; i < num_ports; i++) {
/* unmask all errors (but they are still masked at AFU) */
/* Unmask all errors (but they are still masked at AFU) */
writeq_be(0, &afu->afu_map->global.fc_regs[i][FC_ERRMSK / 8]);
/* clear CRC error cnt & set a threshold */
/* Clear CRC error cnt & set a threshold */
(void)readq_be(&afu->afu_map->global.
fc_regs[i][FC_CNT_CRCERR / 8]);
writeq_be(MC_CRC_THRESH, &afu->afu_map->global.fc_regs[i]
[FC_CRC_THRESH / 8]);
/* set WWPNs. If already programmed, wwpn[i] is 0 */
/* Set WWPNs. If already programmed, wwpn[i] is 0 */
if (wwpn[i] != 0 &&
afu_set_wwpn(afu, i,
&afu->afu_map->global.fc_regs[i][0],
@ -1563,18 +1559,17 @@ static int init_global(struct cxlflash_cfg *cfg)
* offline/online transitions and a PLOGI
*/
msleep(100);
}
/* set up master's own CTX_CAP to allow real mode, host translation */
/* tbls, afu cmds and read/write GSCSI cmds. */
/* Set up master's own CTX_CAP to allow real mode, host translation */
/* tables, afu cmds and read/write GSCSI cmds. */
/* First, unlock ctx_cap write by reading mbox */
(void)readq_be(&afu->ctrl_map->mbox_r); /* unlock ctx_cap */
writeq_be((SISL_CTX_CAP_REAL_MODE | SISL_CTX_CAP_HOST_XLATE |
SISL_CTX_CAP_READ_CMD | SISL_CTX_CAP_WRITE_CMD |
SISL_CTX_CAP_AFU_CMD | SISL_CTX_CAP_GSCSI_CMD),
&afu->ctrl_map->ctx_cap);
/* init heartbeat */
/* Initialize heartbeat */
afu->hb = readq_be(&afu->afu_map->global.regs.afu_hb);
out:
@ -1603,7 +1598,7 @@ static int start_afu(struct cxlflash_cfg *cfg)
init_pcr(cfg);
/* initialize RRQ pointers */
/* Initialize RRQ pointers */
afu->hrrq_start = &afu->rrq_entry[0];
afu->hrrq_end = &afu->rrq_entry[NUM_RRQ_ENTRY - 1];
afu->hrrq_curr = afu->hrrq_start;
@ -1726,8 +1721,7 @@ static int init_afu(struct cxlflash_cfg *cfg)
goto err1;
}
/* Map the entire MMIO space of the AFU.
*/
/* Map the entire MMIO space of the AFU */
afu->afu_map = cxl_psa_map(cfg->mcctx);
if (!afu->afu_map) {
rc = -ENOMEM;
@ -1779,7 +1773,7 @@ static int init_afu(struct cxlflash_cfg *cfg)
* @mode: Type of sync to issue (lightweight, heavyweight, global).
*
* The AFU can only take 1 sync command at a time. This routine enforces this
* limitation by using a mutex to provide exlusive access to the AFU during
* limitation by using a mutex to provide exclusive access to the AFU during
* the sync. This design point requires calling threads to not be on interrupt
* context due to the possibility of sleeping during concurrent sync operations.
*
@ -1845,7 +1839,7 @@ int cxlflash_afu_sync(struct afu *afu, ctx_hndl_t ctx_hndl_u,
wait_resp(afu, cmd);
/* set on timeout */
/* Set on timeout */
if (unlikely((cmd->sa.ioasc != 0) ||
(cmd->sa.host_use_b[0] & B_ERROR)))
rc = -1;
@ -2262,7 +2256,7 @@ static struct scsi_host_template driver_template = {
.cmd_per_lun = 16,
.can_queue = CXLFLASH_MAX_CMDS,
.this_id = -1,
.sg_tablesize = SG_NONE, /* No scatter gather support. */
.sg_tablesize = SG_NONE, /* No scatter gather support */
.max_sectors = CXLFLASH_MAX_SECTORS,
.use_clustering = ENABLE_CLUSTERING,
.shost_attrs = cxlflash_host_attrs,
@ -2322,8 +2316,7 @@ static void cxlflash_worker_thread(struct work_struct *work)
/* The reset can block... */
afu_link_reset(afu, port,
&afu->afu_map->
global.fc_regs[port][0]);
&afu->afu_map->global.fc_regs[port][0]);
spin_lock_irqsave(cfg->host->host_lock, lock_flags);
}
@ -2402,7 +2395,6 @@ static int cxlflash_probe(struct pci_dev *pdev,
cfg->last_lun_index[1] = CXLFLASH_NUM_VLUNS/2 - 1;
cfg->dev_id = (struct pci_device_id *)dev_id;
cfg->mcctx = NULL;
init_waitqueue_head(&cfg->tmf_waitq);
init_waitqueue_head(&cfg->reset_waitq);
@ -2418,7 +2410,8 @@ static int cxlflash_probe(struct pci_dev *pdev,
pci_set_drvdata(pdev, cfg);
/* Use the special service provided to look up the physical
/*
* Use the special service provided to look up the physical
* PCI device, since we are called on the probe of the virtual
* PCI host bus (vphb)
*/
@ -2448,7 +2441,6 @@ static int cxlflash_probe(struct pci_dev *pdev,
}
cfg->init_state = INIT_STATE_AFU;
rc = init_scsi(cfg);
if (rc) {
dev_err(&pdev->dev, "%s: call to init_scsi "

6
drivers/scsi/cxlflash/sislite.h
View File

@ -146,7 +146,7 @@ struct sisl_rc {
#define SISL_FC_RC_ABORTFAIL 0x59 /* pending abort completed w/fail */
#define SISL_FC_RC_RESID 0x5A /* ioasa underrun/overrun flags set */
#define SISL_FC_RC_RESIDERR 0x5B /* actual data len does not match SCSI
reported len, possbly due to dropped
reported len, possibly due to dropped
frames */
#define SISL_FC_RC_TGTABORT 0x5C /* command aborted by target */
};
@ -258,7 +258,7 @@ struct sisl_host_map {
__be64 rrq_start; /* start & end are both inclusive */
__be64 rrq_end; /* write sequence: start followed by end */
__be64 cmd_room;
__be64 ctx_ctrl; /* least signiifcant byte or b56:63 is LISN# */
__be64 ctx_ctrl; /* least significant byte or b56:63 is LISN# */
__be64 mbox_w; /* restricted use */
};
@ -290,7 +290,7 @@ struct sisl_global_regs {
#define SISL_ASTATUS_FC0_LOGO 0x4000ULL /* b49, target sent FLOGI/PLOGI/LOGO
while logged in */
#define SISL_ASTATUS_FC0_CRC_T 0x2000ULL /* b50, CRC threshold exceeded */
#define SISL_ASTATUS_FC0_LOGI_R 0x1000ULL /* b51, login state mechine timed out
#define SISL_ASTATUS_FC0_LOGI_R 0x1000ULL /* b51, login state machine timed out
and retrying */
#define SISL_ASTATUS_FC0_LOGI_F 0x0800ULL /* b52, login failed,
FC_ERROR[19:0] */

2
drivers/scsi/cxlflash/superpipe.c
View File

@ -76,7 +76,7 @@ void cxlflash_free_errpage(void)
*
* When the host needs to go down, all users must be quiesced and their
* memory freed. This is accomplished by putting the contexts in error
* state which will notify the user and let them 'drive' the tear-down.
* state which will notify the user and let them 'drive' the tear down.
* Meanwhile, this routine camps until all user contexts have been removed.
*/
void cxlflash_stop_term_user_contexts(struct cxlflash_cfg *cfg)

14
drivers/scsi/cxlflash/vlun.c
View File

@ -132,7 +132,7 @@ static int ba_init(struct ba_lun *ba_lun)
return -ENOMEM;
}
/* Pass the allocated lun info as a handle to the user */
/* Pass the allocated LUN info as a handle to the user */
ba_lun->ba_lun_handle = bali;
pr_debug("%s: Successfully initialized the LUN: "
@ -165,7 +165,7 @@ static int find_free_range(u32 low,
num_bits = (sizeof(*lam) * BITS_PER_BYTE);
bit_pos = find_first_bit(lam, num_bits);
pr_devel("%s: Found free bit %llX in lun "
pr_devel("%s: Found free bit %llX in LUN "
"map entry %llX at bitmap index = %X\n",
__func__, bit_pos, bali->lun_alloc_map[i],
i);
@ -682,14 +682,14 @@ static int shrink_lxt(struct afu *afu,
}
/**
* _cxlflash_vlun_resize() - changes the size of a virtual lun
* _cxlflash_vlun_resize() - changes the size of a virtual LUN
* @sdev: SCSI device associated with LUN owning virtual LUN.
* @ctxi: Context owning resources.
* @resize: Resize ioctl data structure.
*
* On successful return, the user is informed of the new size (in blocks)
* of the virtual lun in last LBA format. When the size of the virtual
* lun is zero, the last LBA is reflected as -1. See comment in the
* of the virtual LUN in last LBA format. When the size of the virtual
* LUN is zero, the last LBA is reflected as -1. See comment in the
* prologue for _cxlflash_disk_release() regarding AFU syncs and contexts
* on the error recovery list.
*
@ -886,8 +886,8 @@ static int init_luntable(struct cxlflash_cfg *cfg, struct llun_info *lli)
* @arg: UVirtual ioctl data structure.
*
* On successful return, the user is informed of the resource handle
* to be used to identify the virtual lun and the size (in blocks) of
* the virtual lun in last LBA format. When the size of the virtual lun
* to be used to identify the virtual LUN and the size (in blocks) of
* the virtual LUN in last LBA format. When the size of the virtual LUN
* is zero, the last LBA is reflected as -1.
*
* Return: 0 on success, -errno on failure