/*
* Include section
*/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/signal.h>
static int cy_next_channel; /* next minor available */
-/*
- * tmp_buf is used as a temporary buffer by serial_write. We need to
- * lock it in case the copy_from_user blocks while swapping in a page,
- * and some other program tries to do a serial write at the same time.
- * Since the lock will only come under contention when the system is
- * swapping and available memory is low, it makes sense to share one
- * buffer across all the serial ports, since it significantly saves
- * memory if large numbers of serial ports are open. This buffer is
- * allocated when the first cy_open occurs.
- */
-static unsigned char *tmp_buf;
-
/*
* This is used to look up the divisor speeds and the timeouts
* We're normally limited to 15 distinct baud rates. The extra
received, out buffer empty, modem change, etc.
*/
static irqreturn_t
-cyy_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+cyy_interrupt(int irq, void *dev_id)
{
struct tty_struct *tty;
int status;
#ifdef CONFIG_CYZ_INTR
static irqreturn_t
-cyz_interrupt(int irq, void *dev_id, struct pt_regs *regs)
+cyz_interrupt(int irq, void *dev_id)
{
struct cyclades_card *cinfo;
{
struct cyclades_port *info;
int retval, line;
- unsigned long page;
line = tty->index;
if ((line < 0) || (NR_PORTS <= line)){
printk("cyc:cy_open (%d): incrementing count to %d\n",
current->pid, info->count);
#endif
- if (!tmp_buf) {
- page = get_zeroed_page(GFP_KERNEL);
- if (!page)
- return -ENOMEM;
- if (tmp_buf)
- free_page(page);
- else
- tmp_buf = (unsigned char *) page;
- }
/*
* If the port is the middle of closing, bail out now
return 0;
}
- if (!tty || !info->xmit_buf || !tmp_buf){
- return 0;
- }
+ if (!info->xmit_buf)
+ return 0;
CY_LOCK(info, flags);
while (1) {
if (serial_paranoia_check(info, tty->name, "cy_put_char"))
return;
- if (!tty || !info->xmit_buf)
+ if (!info->xmit_buf)
return;
CY_LOCK(info, flags);
/* allocate IRQ */
if(request_irq(cy_isa_irq, cyy_interrupt,
- SA_INTERRUPT, "Cyclom-Y", &cy_card[j]))
+ IRQF_DISABLED, "Cyclom-Y", &cy_card[j]))
{
printk("Cyclom-Y/ISA found at 0x%lx ",
(unsigned long) cy_isa_address);
/* allocate IRQ */
if(request_irq(cy_pci_irq, cyy_interrupt,
- SA_SHIRQ, "Cyclom-Y", &cy_card[j]))
+ IRQF_SHARED, "Cyclom-Y", &cy_card[j]))
{
printk("Cyclom-Y/PCI found at 0x%lx ",
(ulong) cy_pci_phys2);
/* allocate IRQ only if board has an IRQ */
if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
if(request_irq(cy_pci_irq, cyz_interrupt,
- SA_SHIRQ, "Cyclades-Z", &cy_card[j]))
+ IRQF_SHARED, "Cyclades-Z", &cy_card[j]))
{
printk("Cyclom-8Zo/PCI found at 0x%lx ",
(ulong) cy_pci_phys2);
/* allocate IRQ only if board has an IRQ */
if( (cy_pci_irq != 0) && (cy_pci_irq != 255) ) {
if(request_irq(cy_pci_irq, cyz_interrupt,
- SA_SHIRQ, "Cyclades-Z", &cy_card[j]))
+ IRQF_SHARED, "Cyclades-Z", &cy_card[j]))
{
printk("Cyclom-Ze/PCI found at 0x%lx ",
(ulong) cy_pci_phys2);
extra ports are ignored.
*/
-static struct tty_operations cy_ops = {
+static const struct tty_operations cy_ops = {
.open = cy_open,
.close = cy_close,
.write = cy_write,
cy_serial_driver->owner = THIS_MODULE;
cy_serial_driver->driver_name = "cyclades";
cy_serial_driver->name = "ttyC";
- cy_serial_driver->devfs_name = "tts/C";
cy_serial_driver->major = CYCLADES_MAJOR;
cy_serial_driver->minor_start = 0;
cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
#endif
}
}
- if (tmp_buf) {
- free_page((unsigned long) tmp_buf);
- tmp_buf = NULL;
- }
} /* cy_cleanup_module */
module_init(cy_init);