[PATCH 1/2] SCSI/gdth: PCI probe cleanups, prep for PCI hotplug API conversion

From: Jeff Garzik
Date: Fri Feb 15 2008 - 22:33:51 EST

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- Reduce uses of gdth_pci_str::pdev, preferring a local variable
(or function arg) 'pdev' instead.

- Reduce uses of gdth_pcistr array, preferring local variable
(or function arg) 'pcistr' instead.

- Eliminate lone use of gdth_pci_str::irq, using equivalent
pdev->irq instead

- Eliminate assign-only gdth_pci_str::io_mm

Note: If the indentation seems weird, that's because a line was
converted from spaces to tabs, when it was modified.

Signed-off-by: Jeff Garzik <jgarzik@xxxxxxxxxx>
---
NOTE: this patch series supercedes the previous "gdth: convert to PCI
hotplug API" patch.

drivers/scsi/gdth.c | 59 ++++++++++++++++++++++++--------------------------
drivers/scsi/gdth.h | 2 -
2 files changed, 28 insertions(+), 33 deletions(-)

diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 6d67f5c..56c2b91 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -653,7 +653,6 @@ static void __init gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,

/* GDT PCI controller found, resources are already in pdev */
pcistr[*cnt].pdev = pdev;
- pcistr[*cnt].irq = pdev->irq;
base0 = pci_resource_flags(pdev, 0);
base1 = pci_resource_flags(pdev, 1);
base2 = pci_resource_flags(pdev, 2);
@@ -668,7 +667,6 @@ static void __init gdth_search_dev(gdth_pci_str *pcistr, ushort *cnt,
!(base1 & IORESOURCE_IO))
continue;
pcistr[*cnt].dpmem = pci_resource_start(pdev, 2);
- pcistr[*cnt].io_mm = pci_resource_start(pdev, 0);
pcistr[*cnt].io = pci_resource_start(pdev, 1);
}
TRACE2(("Controller found at %d/%d, irq %d, dpmem 0x%lx\n",
@@ -913,7 +911,8 @@ static int __init gdth_init_isa(ulong32 bios_adr,gdth_ha_str *ha)
#endif /* CONFIG_ISA */

#ifdef CONFIG_PCI
-static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
+static int __init gdth_init_pci(struct pci_dev *pdev, gdth_pci_str *pcistr,
+ gdth_ha_str *ha)
{
register gdt6_dpram_str __iomem *dp6_ptr;
register gdt6c_dpram_str __iomem *dp6c_ptr;
@@ -925,14 +924,14 @@ static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)

TRACE(("gdth_init_pci()\n"));

- if (pcistr->pdev->vendor == PCI_VENDOR_ID_INTEL)
+ if (pdev->vendor == PCI_VENDOR_ID_INTEL)
ha->oem_id = OEM_ID_INTEL;
else
ha->oem_id = OEM_ID_ICP;
- ha->brd_phys = (pcistr->pdev->bus->number << 8) | (pcistr->pdev->devfn & 0xf8);
- ha->stype = (ulong32)pcistr->pdev->device;
- ha->irq = pcistr->irq;
- ha->pdev = pcistr->pdev;
+ ha->brd_phys = (pdev->bus->number << 8) | (pdev->devfn & 0xf8);
+ ha->stype = (ulong32)pdev->device;
+ ha->irq = pdev->irq;
+ ha->pdev = pdev;

if (ha->pdev->device <= PCI_DEVICE_ID_VORTEX_GDT6000B) { /* GDT6000/B */
TRACE2(("init_pci() dpmem %lx irq %d\n",pcistr->dpmem,ha->irq));
@@ -960,8 +959,7 @@ static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
continue;
}
iounmap(ha->brd);
- pci_write_config_dword(pcistr->pdev,
- PCI_BASE_ADDRESS_0, i);
+ pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
ha->brd = ioremap(i, sizeof(gdt6_dpram_str));
if (ha->brd == NULL) {
printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
@@ -1070,8 +1068,7 @@ static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
continue;
}
iounmap(ha->brd);
- pci_write_config_dword(pcistr->pdev,
- PCI_BASE_ADDRESS_2, i);
+ pci_write_config_dword(pdev, PCI_BASE_ADDRESS_2, i);
ha->brd = ioremap(i, sizeof(gdt6c_dpram_str));
if (ha->brd == NULL) {
printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
@@ -1163,16 +1160,16 @@ static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
}

/* manipulate config. space to enable DPMEM, start RP controller */
- pci_read_config_word(pcistr->pdev, PCI_COMMAND, &command);
+ pci_read_config_word(pdev, PCI_COMMAND, &command);
command |= 6;
- pci_write_config_word(pcistr->pdev, PCI_COMMAND, command);
- if (pci_resource_start(pcistr->pdev, 8) == 1UL)
- pci_resource_start(pcistr->pdev, 8) = 0UL;
+ pci_write_config_word(pdev, PCI_COMMAND, command);
+ if (pci_resource_start(pdev, 8) == 1UL)
+ pci_resource_start(pdev, 8) = 0UL;
i = 0xFEFF0001UL;
- pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS, i);
+ pci_write_config_dword(pdev, PCI_ROM_ADDRESS, i);
gdth_delay(1);
- pci_write_config_dword(pcistr->pdev, PCI_ROM_ADDRESS,
- pci_resource_start(pcistr->pdev, 8));
+ pci_write_config_dword(pdev, PCI_ROM_ADDRESS,
+ pci_resource_start(pdev, 8));

dp6m_ptr = ha->brd;

@@ -1199,8 +1196,7 @@ static int __init gdth_init_pci(gdth_pci_str *pcistr,gdth_ha_str *ha)
continue;
}
iounmap(ha->brd);
- pci_write_config_dword(pcistr->pdev,
- PCI_BASE_ADDRESS_0, i);
+ pci_write_config_dword(pdev, PCI_BASE_ADDRESS_0, i);
ha->brd = ioremap(i, sizeof(gdt6m_dpram_str));
if (ha->brd == NULL) {
printk("GDT-PCI: Initialization error (DPMEM remap error)\n");
@@ -4998,12 +4994,13 @@ static int __init gdth_eisa_probe_one(ushort eisa_slot)
#endif /* CONFIG_EISA */

#ifdef CONFIG_PCI
-static int __init gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)
+static int __init gdth_pci_probe_one(gdth_pci_str *pcistr)
{
struct Scsi_Host *shp;
gdth_ha_str *ha;
dma_addr_t scratch_dma_handle = 0;
int error, i;
+ struct pci_dev *pdev = pcistr->pdev;

shp = scsi_host_alloc(&gdth_template, sizeof(gdth_ha_str));
if (!shp)
@@ -5011,13 +5008,13 @@ static int __init gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)
ha = shost_priv(shp);

error = -ENODEV;
- if (!gdth_init_pci(&pcistr[ctr],ha))
+ if (!gdth_init_pci(pdev, pcistr, ha))
goto out_host_put;

/* controller found and initialized */
printk("Configuring GDT-PCI HA at %d/%d IRQ %u\n",
- pcistr[ctr].pdev->bus->number,
- PCI_SLOT(pcistr[ctr].pdev->devfn),
+ pdev->bus->number,
+ PCI_SLOT(pdev->devfn),
ha->irq);

error = request_irq(ha->irq, gdth_interrupt,
@@ -5062,7 +5059,7 @@ static int __init gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)

ha->scratch_busy = FALSE;
ha->req_first = NULL;
- ha->tid_cnt = pcistr[ctr].pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
+ ha->tid_cnt = pdev->device >= 0x200 ? MAXID : MAX_HDRIVES;
if (max_ids > 0 && max_ids < ha->tid_cnt)
ha->tid_cnt = max_ids;
for (i = 0; i < GDTH_MAXCMDS; ++i)
@@ -5082,16 +5079,16 @@ static int __init gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)
/* 64-bit DMA only supported from FW >= x.43 */
if (!(ha->cache_feat & ha->raw_feat & ha->screen_feat & GDT_64BIT) ||
!ha->dma64_support) {
- if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
+ if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "GDT-PCI %d: "
"Unable to set 32-bit DMA\n", ha->hanum);
goto out_free_coal_stat;
}
} else {
shp->max_cmd_len = 16;
- if (!pci_set_dma_mask(pcistr[ctr].pdev, DMA_64BIT_MASK)) {
+ if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) {
printk("GDT-PCI %d: 64-bit DMA enabled\n", ha->hanum);
- } else if (pci_set_dma_mask(pcistr[ctr].pdev, DMA_32BIT_MASK)) {
+ } else if (pci_set_dma_mask(pdev, DMA_32BIT_MASK)) {
printk(KERN_WARNING "GDT-PCI %d: "
"Unable to set 64/32-bit DMA\n", ha->hanum);
goto out_free_coal_stat;
@@ -5105,7 +5102,7 @@ static int __init gdth_pci_probe_one(gdth_pci_str *pcistr, int ctr)
spin_lock_init(&ha->smp_lock);
gdth_enable_int(ha);

- error = scsi_add_host(shp, &pcistr[ctr].pdev->dev);
+ error = scsi_add_host(shp, &pdev->dev);
if (error)
goto out_free_coal_stat;
list_add_tail(&ha->list, &gdth_instances);
@@ -5218,7 +5215,7 @@ static int __init gdth_init(void)
printk("GDT-HA: Found %d PCI Storage RAID Controllers\n", cnt);
gdth_sort_pci(pcistr,cnt);
for (ctr = 0; ctr < cnt; ++ctr)
- gdth_pci_probe_one(pcistr, ctr);
+ gdth_pci_probe_one(&pcistr[ctr]);
}
#endif /* CONFIG_PCI */

diff --git a/drivers/scsi/gdth.h b/drivers/scsi/gdth.h
index 1434c6b..8193f4b 100644
--- a/drivers/scsi/gdth.h
+++ b/drivers/scsi/gdth.h
@@ -839,8 +839,6 @@ typedef struct {
struct pci_dev *pdev;
ulong dpmem; /* DPRAM address */
ulong io; /* IO address */
- ulong io_mm; /* IO address mem. mapped */
- unchar irq; /* IRQ */
} gdth_pci_str;

--
1.5.3.8

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Next message: Jeff Garzik: "[PATCH 2/2 v2] SCSI/gdth: convert to PCI hotplug API"
Previous message: Harvey Harrison: "[PATCH] lockd: fix sparse warning in svcshare.c"
Next in thread: Jeff Garzik: "[PATCH 2/2 v2] SCSI/gdth: convert to PCI hotplug API"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]