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Date: Sun, 29 Apr 2007 22:59:05 +0200 (CEST)
From: Jiri Slaby <jirislaby@...il.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: <linux-kernel@...r.kernel.org>
Subject: [PATCH 9/21] Char: cyclades, simplify variables initialization
cyclades, simplify variables initialization
- do not init static variables to 0
- simplify cy_init_card -- use memset(0) and do not zero each element
separately, also reorder init, so that same entries are inited at one
place
Signed-off-by: Jiri Slaby <jirislaby@...il.com>
---
commit 5bd7a7ad3eaafc9d8d03bd1488650b210c03f613
tree 46cb0c86eba349d6079d294359f8e36ff8526c71
parent 289b6204e150db7f487f53c227318b950b29d863
author Jiri Slaby <jirislaby@...il.com> Wed, 25 Apr 2007 22:02:36 +0200
committer Jiri Slaby <jirislaby@...il.com> Sat, 28 Apr 2007 23:47:12 +0200
drivers/char/cyclades.c | 156 +++++++++++++----------------------------------
1 files changed, 44 insertions(+), 112 deletions(-)
diff --git a/drivers/char/cyclades.c b/drivers/char/cyclades.c
index 738903d..9088c93 100644
--- a/drivers/char/cyclades.c
+++ b/drivers/char/cyclades.c
@@ -718,8 +718,8 @@ static unsigned int cy_isa_addresses[] = {
#define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)
#ifdef MODULE
-static long maddr[NR_CARDS] = { 0, };
-static int irq[NR_CARDS] = { 0, };
+static long maddr[NR_CARDS];
+static int irq[NR_CARDS];
module_param_array(maddr, long, NULL, 0);
module_param_array(irq, int, NULL, 0);
@@ -4505,6 +4505,8 @@ static void __devinit cy_init_card(struct cyclades_card *cinfo,
unsigned short chip_number;
int index, port;
+ spin_lock_init(&cinfo->card_lock);
+
if (IS_CYC_Z(*cinfo)) { /* Cyclades-Z */
mailbox = readl(&((struct RUNTIME_9060 __iomem *)
cinfo->ctl_addr)->mail_box_0);
@@ -4512,104 +4514,47 @@ static void __devinit cy_init_card(struct cyclades_card *cinfo,
cinfo->intr_enabled = 0;
cinfo->nports = 0; /* Will be correctly set later, after
Z FW is loaded */
- spin_lock_init(&cinfo->card_lock);
- for (port = cinfo->first_line;
- port < cinfo->first_line + nports; port++) {
- info = &cy_port[port];
- info->magic = CYCLADES_MAGIC;
+ } else {
+ index = cinfo->bus_index;
+ nports = cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips;
+ }
+
+ for (port = cinfo->first_line; port < cinfo->first_line + nports;
+ port++) {
+ info = &cy_port[port];
+ memset(info, 0, sizeof(*info));
+ info->magic = CYCLADES_MAGIC;
+ info->card = board;
+ info->line = port;
+ info->flags = STD_COM_FLAGS;
+ info->closing_wait = CLOSING_WAIT_DELAY;
+ info->close_delay = 5 * HZ / 10;
+
+ INIT_WORK(&info->tqueue, do_softint);
+ init_waitqueue_head(&info->open_wait);
+ init_waitqueue_head(&info->close_wait);
+ init_waitqueue_head(&info->shutdown_wait);
+ init_waitqueue_head(&info->delta_msr_wait);
+
+ if (IS_CYC_Z(*cinfo)) {
info->type = PORT_STARTECH;
- info->card = board;
- info->line = port;
- info->chip_rev = 0;
- info->flags = STD_COM_FLAGS;
- info->tty = NULL;
if (mailbox == ZO_V1)
info->xmit_fifo_size = CYZ_FIFO_SIZE;
else
- info->xmit_fifo_size =
- 4 * CYZ_FIFO_SIZE;
- info->cor1 = 0;
- info->cor2 = 0;
- info->cor3 = 0;
- info->cor4 = 0;
- info->cor5 = 0;
- info->tbpr = 0;
- info->tco = 0;
- info->rbpr = 0;
- info->rco = 0;
- info->custom_divisor = 0;
- info->close_delay = 5 * HZ / 10;
- info->closing_wait = CLOSING_WAIT_DELAY;
- info->icount.cts = info->icount.dsr =
- info->icount.rng = info->icount.dcd = 0;
- info->icount.rx = info->icount.tx = 0;
- info->icount.frame = info->icount.parity = 0;
- info->icount.overrun = info->icount.brk = 0;
- info->x_char = 0;
- info->event = 0;
- info->count = 0;
- info->blocked_open = 0;
- info->default_threshold = 0;
- info->default_timeout = 0;
- INIT_WORK(&info->tqueue, do_softint);
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
- init_waitqueue_head(&info->shutdown_wait);
- init_waitqueue_head(&info->delta_msr_wait);
- /* info->session */
- /* info->pgrp */
- info->read_status_mask = 0;
- /* info->timeout */
- /* Bentson's vars */
- info->jiffies[0] = 0;
- info->jiffies[1] = 0;
- info->jiffies[2] = 0;
- info->rflush_count = 0;
+ info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
#ifdef CONFIG_CYZ_INTR
init_timer(&cyz_rx_full_timer[port]);
cyz_rx_full_timer[port].function = NULL;
#endif
- }
-#ifndef CONFIG_CYZ_INTR
- if (!timer_pending(&cyz_timerlist)) {
- mod_timer(&cyz_timerlist, jiffies + 1);
-#ifdef CY_PCI_DEBUG
- printk(KERN_DEBUG "Cyclades-Z polling initialized\n");
-#endif
- }
-#endif /* CONFIG_CYZ_INTR */
-
- } else { /* Cyclom-Y of some kind */
- index = cinfo->bus_index;
- spin_lock_init(&cinfo->card_lock);
- cinfo->nports = CyPORTS_PER_CHIP * cinfo->num_chips;
- for (port = cinfo->first_line;
- port < cinfo->first_line + cinfo->nports; port++) {
- info = &cy_port[port];
- info->magic = CYCLADES_MAGIC;
+ } else {
info->type = PORT_CIRRUS;
- info->card = board;
- info->line = port;
- info->flags = STD_COM_FLAGS;
- info->tty = NULL;
info->xmit_fifo_size = CyMAX_CHAR_FIFO;
- info->cor1 =
- CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
+ info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
info->cor2 = CyETC;
info->cor3 = 0x08; /* _very_ small rcv threshold */
- info->cor4 = 0;
- info->cor5 = 0;
- info->custom_divisor = 0;
- info->close_delay = 5 * HZ / 10;
- info->closing_wait = CLOSING_WAIT_DELAY;
- info->icount.cts = info->icount.dsr =
- info->icount.rng = info->icount.dcd = 0;
- info->icount.rx = info->icount.tx = 0;
- info->icount.frame = info->icount.parity = 0;
- info->icount.overrun = info->icount.brk = 0;
+
chip_number = (port - cinfo->first_line) / 4;
- if ((info->chip_rev =
- readb(cinfo->base_addr +
+ if ((info->chip_rev = readb(cinfo->base_addr +
(cy_chip_offset[chip_number] <<
index) + (CyGFRCR << index))) >=
CD1400_REV_J) {
@@ -4618,35 +4563,28 @@ static void __devinit cy_init_card(struct cyclades_card *cinfo,
info->tco = baud_co_60[13]; /* Tx CO */
info->rbpr = baud_bpr_60[13]; /* Rx BPR */
info->rco = baud_co_60[13]; /* Rx CO */
- info->rflow = 0;
info->rtsdtr_inv = 1;
} else {
info->tbpr = baud_bpr_25[13]; /* Tx BPR */
info->tco = baud_co_25[13]; /* Tx CO */
info->rbpr = baud_bpr_25[13]; /* Rx BPR */
info->rco = baud_co_25[13]; /* Rx CO */
- info->rflow = 0;
info->rtsdtr_inv = 0;
}
- info->x_char = 0;
- info->event = 0;
- info->count = 0;
- info->blocked_open = 0;
- info->default_threshold = 0;
- info->default_timeout = 0;
- INIT_WORK(&info->tqueue, do_softint);
- init_waitqueue_head(&info->open_wait);
- init_waitqueue_head(&info->close_wait);
- init_waitqueue_head(&info->shutdown_wait);
- init_waitqueue_head(&info->delta_msr_wait);
- /* info->session */
- /* info->pgrp */
- info->read_status_mask =
- CyTIMEOUT | CySPECHAR | CyBREAK
- | CyPARITY | CyFRAME | CyOVERRUN;
- /* info->timeout */
+ info->read_status_mask = CyTIMEOUT | CySPECHAR |
+ CyBREAK | CyPARITY | CyFRAME | CyOVERRUN;
}
+
}
+
+#ifndef CONFIG_CYZ_INTR
+ if (IS_CYC_Z(*cinfo) && !timer_pending(&cyz_timerlist)) {
+ mod_timer(&cyz_timerlist, jiffies + 1);
+#ifdef CY_PCI_DEBUG
+ printk(KERN_DEBUG "Cyclades-Z polling initialized\n");
+#endif
+ }
+#endif
}
/* initialize chips on Cyclom-Y card -- return number of valid
@@ -5369,12 +5307,6 @@ static int __init cy_init(void)
goto err_frtty;
}
- for (i = 0; i < NR_CARDS; i++) {
- /* base_addr=0 indicates board not found */
- cy_card[i].base_addr = NULL;
- }
-
- /* invalidate remaining cy_port structures */
for (i = 0; i < NR_PORTS; i++) {
cy_port[i].line = -1;
cy_port[i].magic = -1;
-
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