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authorJiri Slaby <jslaby@suse.cz>2012-06-04 15:35:15 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-06-13 02:50:23 +0400
commit718c4ca1f721be3ae67f9ff7d43b9a910e4a1ec3 (patch)
tree72e4e17b5b3ef534c823c21efdb2ab2d743fca80 /drivers/tty/cyclades.c
parentee4cd1b225368abed7e0f4d344f1e9a93e87b98e (diff)
downloadlinux-718c4ca1f721be3ae67f9ff7d43b9a910e4a1ec3.tar.xz
TTY: cyclades, add local pointer for card
cy_pci_probe and cy_detect_isa reference cy_card[card_no] many times. It makes the code hard to read. Let us add a local variable holding a pointer to the card indexed by card_no and use that. Signed-off-by: Jiri Slaby <jslaby@suse.cz> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/cyclades.c')
-rw-r--r--drivers/tty/cyclades.c63
1 files changed, 33 insertions, 30 deletions
diff --git a/drivers/tty/cyclades.c b/drivers/tty/cyclades.c
index e61cabdd69df..cff546839db9 100644
--- a/drivers/tty/cyclades.c
+++ b/drivers/tty/cyclades.c
@@ -3289,6 +3289,7 @@ static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr,
static int __init cy_detect_isa(void)
{
#ifdef CONFIG_ISA
+ struct cyclades_card *card;
unsigned short cy_isa_irq, nboard;
void __iomem *cy_isa_address;
unsigned short i, j, cy_isa_nchan;
@@ -3349,7 +3350,8 @@ static int __init cy_detect_isa(void)
}
/* fill the next cy_card structure available */
for (j = 0; j < NR_CARDS; j++) {
- if (cy_card[j].base_addr == NULL)
+ card = &cy_card[j];
+ if (card->base_addr == NULL)
break;
}
if (j == NR_CARDS) { /* no more cy_cards available */
@@ -3363,7 +3365,7 @@ static int __init cy_detect_isa(void)
/* allocate IRQ */
if (request_irq(cy_isa_irq, cyy_interrupt,
- 0, "Cyclom-Y", &cy_card[j])) {
+ 0, "Cyclom-Y", card)) {
printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but "
"could not allocate IRQ#%d.\n",
(unsigned long)cy_isa_address, cy_isa_irq);
@@ -3372,16 +3374,16 @@ static int __init cy_detect_isa(void)
}
/* set cy_card */
- cy_card[j].base_addr = cy_isa_address;
- cy_card[j].ctl_addr.p9050 = NULL;
- cy_card[j].irq = (int)cy_isa_irq;
- cy_card[j].bus_index = 0;
- cy_card[j].first_line = cy_next_channel;
- cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP;
- cy_card[j].nports = cy_isa_nchan;
- if (cy_init_card(&cy_card[j])) {
- cy_card[j].base_addr = NULL;
- free_irq(cy_isa_irq, &cy_card[j]);
+ card->base_addr = cy_isa_address;
+ card->ctl_addr.p9050 = NULL;
+ card->irq = (int)cy_isa_irq;
+ card->bus_index = 0;
+ card->first_line = cy_next_channel;
+ card->num_chips = cy_isa_nchan / CyPORTS_PER_CHIP;
+ card->nports = cy_isa_nchan;
+ if (cy_init_card(card)) {
+ card->base_addr = NULL;
+ free_irq(cy_isa_irq, card);
iounmap(cy_isa_address);
continue;
}
@@ -3695,6 +3697,7 @@ err:
static int __devinit cy_pci_probe(struct pci_dev *pdev,
const struct pci_device_id *ent)
{
+ struct cyclades_card *card;
void __iomem *addr0 = NULL, *addr2 = NULL;
char *card_name = NULL;
u32 uninitialized_var(mailbox);
@@ -3829,7 +3832,8 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
}
/* fill the next cy_card structure available */
for (card_no = 0; card_no < NR_CARDS; card_no++) {
- if (cy_card[card_no].base_addr == NULL)
+ card = &cy_card[card_no];
+ if (card->base_addr == NULL)
break;
}
if (card_no == NR_CARDS) { /* no more cy_cards available */
@@ -3843,27 +3847,26 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
/* allocate IRQ */
retval = request_irq(irq, cyy_interrupt,
- IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]);
+ IRQF_SHARED, "Cyclom-Y", card);
if (retval) {
dev_err(&pdev->dev, "could not allocate IRQ\n");
goto err_unmap;
}
- cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP;
+ card->num_chips = nchan / CyPORTS_PER_CHIP;
} else {
struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS;
struct ZFW_CTRL __iomem *zfw_ctrl;
zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
- cy_card[card_no].hw_ver = mailbox;
- cy_card[card_no].num_chips = (unsigned int)-1;
- cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl;
+ card->hw_ver = mailbox;
+ card->num_chips = (unsigned int)-1;
+ card->board_ctrl = &zfw_ctrl->board_ctrl;
#ifdef CONFIG_CYZ_INTR
/* allocate IRQ only if board has an IRQ */
if (irq != 0 && irq != 255) {
retval = request_irq(irq, cyz_interrupt,
- IRQF_SHARED, "Cyclades-Z",
- &cy_card[card_no]);
+ IRQF_SHARED, "Cyclades-Z", card);
if (retval) {
dev_err(&pdev->dev, "could not allocate IRQ\n");
goto err_unmap;
@@ -3873,17 +3876,17 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
}
/* set cy_card */
- cy_card[card_no].base_addr = addr2;
- cy_card[card_no].ctl_addr.p9050 = addr0;
- cy_card[card_no].irq = irq;
- cy_card[card_no].bus_index = 1;
- cy_card[card_no].first_line = cy_next_channel;
- cy_card[card_no].nports = nchan;
- retval = cy_init_card(&cy_card[card_no]);
+ card->base_addr = addr2;
+ card->ctl_addr.p9050 = addr0;
+ card->irq = irq;
+ card->bus_index = 1;
+ card->first_line = cy_next_channel;
+ card->nports = nchan;
+ retval = cy_init_card(card);
if (retval)
goto err_null;
- pci_set_drvdata(pdev, &cy_card[card_no]);
+ pci_set_drvdata(pdev, card);
if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
@@ -3915,8 +3918,8 @@ static int __devinit cy_pci_probe(struct pci_dev *pdev,
return 0;
err_null:
- cy_card[card_no].base_addr = NULL;
- free_irq(irq, &cy_card[card_no]);
+ card->base_addr = NULL;
+ free_irq(irq, card);
err_unmap:
iounmap(addr0);
if (addr2)