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authorTony Lindgren <tony@atomide.com>2012-09-23 19:31:35 -0700
committerTony Lindgren <tony@atomide.com>2012-09-23 19:31:35 -0700
commit9cd68fa707cf6372f33eb51a5719dd7626efe5f6 (patch)
tree66cde27bd288e011a6e4cff87d342666399a1266 /drivers/tty/mxser.c
parent5698bd757d55b1bb87edd1a9744ab09c142abfc2 (diff)
parent76a5d9bfc42d60e9a672e0cae776157a60970f4e (diff)
Merge tag 'omap-devel-b-c-2-for-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/pjw/omap-pending into devel-late
OMAP patches intended for the 3.7 merge window: - Runtime PM conversions for the GPMC and RNG IP blocks - Preparation patches for the OMAP common clock framework conversion - clkdev alias additions required by other drivers - Performance Monitoring Unit (PMU) support for OMAP2, 3, and non-4430 OMAP4 - OMAP hwmod code and data improvements - Preparation patches for the IOMMU runtime PM conversion - Preparation patches for OMAP4 full-chip retention support Based on a merge of v3.6-rc6, the omap-cleanup-b-for-3.7 tag (7852ec0536ca39cefffc6301dc77f8ae55592926),the cleanup-fixes-for-v3.7 tag (de6ca33a96a6bf61fcb91d3d399703e19ead9d1e), and the omap-devel-am33xx-for-v3.7 tag (11964f53eb4d9ce59a058be9999d9cfcb1ced878), due to dependencies. These patches have been tested for meaningful warnings from checkpatch, sparse, smatch, and cppcheck. Basic build, boot[1], and PM test logs are available here: http://www.pwsan.com/omap/testlogs/hwmod_prcm_clock_a_3.7/20120923173830/ ... 1. Note that the N800 boot fails due to a known issue present in the base commit: http://www.spinics.net/lists/arm-kernel/msg196034.html
Diffstat (limited to 'drivers/tty/mxser.c')
-rw-r--r--drivers/tty/mxser.c63
1 files changed, 46 insertions, 17 deletions
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 90cc680c4f0e..cfda47dabd28 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -643,7 +643,7 @@ static int mxser_change_speed(struct tty_struct *tty,
int ret = 0;
unsigned char status;
- cflag = tty->termios->c_cflag;
+ cflag = tty->termios.c_cflag;
if (!info->ioaddr)
return ret;
@@ -830,7 +830,7 @@ static void mxser_check_modem_status(struct tty_struct *tty,
wake_up_interruptible(&port->port.open_wait);
}
- if (port->port.flags & ASYNC_CTS_FLOW) {
+ if (tty_port_cts_enabled(&port->port)) {
if (tty->hw_stopped) {
if (status & UART_MSR_CTS) {
tty->hw_stopped = 0;
@@ -1520,10 +1520,10 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
tty = tty_port_tty_get(port);
- if (!tty || !tty->termios)
+ if (!tty)
ms.cflag = ip->normal_termios.c_cflag;
else
- ms.cflag = tty->termios->c_cflag;
+ ms.cflag = tty->termios.c_cflag;
tty_kref_put(tty);
spin_lock_irq(&ip->slock);
status = inb(ip->ioaddr + UART_MSR);
@@ -1589,13 +1589,13 @@ static int mxser_ioctl_special(unsigned int cmd, void __user *argp)
tty = tty_port_tty_get(&ip->port);
- if (!tty || !tty->termios) {
+ if (!tty) {
cflag = ip->normal_termios.c_cflag;
iflag = ip->normal_termios.c_iflag;
me->baudrate[p] = tty_termios_baud_rate(&ip->normal_termios);
} else {
- cflag = tty->termios->c_cflag;
- iflag = tty->termios->c_iflag;
+ cflag = tty->termios.c_cflag;
+ iflag = tty->termios.c_iflag;
me->baudrate[p] = tty_get_baud_rate(tty);
}
tty_kref_put(tty);
@@ -1853,7 +1853,7 @@ static void mxser_stoprx(struct tty_struct *tty)
}
}
- if (tty->termios->c_cflag & CRTSCTS) {
+ if (tty->termios.c_cflag & CRTSCTS) {
info->MCR &= ~UART_MCR_RTS;
outb(info->MCR, info->ioaddr + UART_MCR);
}
@@ -1890,7 +1890,7 @@ static void mxser_unthrottle(struct tty_struct *tty)
}
}
- if (tty->termios->c_cflag & CRTSCTS) {
+ if (tty->termios.c_cflag & CRTSCTS) {
info->MCR |= UART_MCR_RTS;
outb(info->MCR, info->ioaddr + UART_MCR);
}
@@ -1939,14 +1939,14 @@ static void mxser_set_termios(struct tty_struct *tty, struct ktermios *old_termi
spin_unlock_irqrestore(&info->slock, flags);
if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios->c_cflag & CRTSCTS)) {
+ !(tty->termios.c_cflag & CRTSCTS)) {
tty->hw_stopped = 0;
mxser_start(tty);
}
/* Handle sw stopped */
if ((old_termios->c_iflag & IXON) &&
- !(tty->termios->c_iflag & IXON)) {
+ !(tty->termios.c_iflag & IXON)) {
tty->stopped = 0;
if (info->board->chip_flag) {
@@ -2337,11 +2337,36 @@ static struct tty_port_operations mxser_port_ops = {
* The MOXA Smartio/Industio serial driver boot-time initialization code!
*/
+static bool allow_overlapping_vector;
+module_param(allow_overlapping_vector, bool, S_IRUGO);
+MODULE_PARM_DESC(allow_overlapping_vector, "whether we allow ISA cards to be configured such that vector overlabs IO ports (default=no)");
+
+static bool mxser_overlapping_vector(struct mxser_board *brd)
+{
+ return allow_overlapping_vector &&
+ brd->vector >= brd->ports[0].ioaddr &&
+ brd->vector < brd->ports[0].ioaddr + 8 * brd->info->nports;
+}
+
+static int mxser_request_vector(struct mxser_board *brd)
+{
+ if (mxser_overlapping_vector(brd))
+ return 0;
+ return request_region(brd->vector, 1, "mxser(vector)") ? 0 : -EIO;
+}
+
+static void mxser_release_vector(struct mxser_board *brd)
+{
+ if (mxser_overlapping_vector(brd))
+ return;
+ release_region(brd->vector, 1);
+}
+
static void mxser_release_ISA_res(struct mxser_board *brd)
{
free_irq(brd->irq, brd);
release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
- release_region(brd->vector, 1);
+ mxser_release_vector(brd);
}
static int __devinit mxser_initbrd(struct mxser_board *brd,
@@ -2396,7 +2421,7 @@ static int __devinit mxser_initbrd(struct mxser_board *brd,
static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
{
- int id, i, bits;
+ int id, i, bits, ret;
unsigned short regs[16], irq;
unsigned char scratch, scratch2;
@@ -2492,13 +2517,15 @@ static int __init mxser_get_ISA_conf(int cap, struct mxser_board *brd)
8 * brd->info->nports - 1);
return -EIO;
}
- if (!request_region(brd->vector, 1, "mxser(vector)")) {
+
+ ret = mxser_request_vector(brd);
+ if (ret) {
release_region(brd->ports[0].ioaddr, 8 * brd->info->nports);
printk(KERN_ERR "mxser: can't request interrupt vector region: "
"0x%.8lx-0x%.8lx\n",
brd->ports[0].ioaddr, brd->ports[0].ioaddr +
8 * brd->info->nports - 1);
- return -EIO;
+ return ret;
}
return brd->info->nports;
@@ -2598,7 +2625,8 @@ static int __devinit mxser_probe(struct pci_dev *pdev,
goto err_rel3;
for (i = 0; i < brd->info->nports; i++)
- tty_register_device(mxvar_sdriver, brd->idx + i, &pdev->dev);
+ tty_port_register_device(&brd->ports[i].port, mxvar_sdriver,
+ brd->idx + i, &pdev->dev);
pci_set_drvdata(pdev, brd);
@@ -2695,7 +2723,8 @@ static int __init mxser_module_init(void)
brd->idx = m * MXSER_PORTS_PER_BOARD;
for (i = 0; i < brd->info->nports; i++)
- tty_register_device(mxvar_sdriver, brd->idx + i, NULL);
+ tty_port_register_device(&brd->ports[i].port,
+ mxvar_sdriver, brd->idx + i, NULL);
m++;
}