summaryrefslogtreecommitdiffstats
path: root/drivers/tty
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2013-03-19 14:47:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2013-03-19 14:47:11 -0700
commit5c7c3361d177120a9980971380b52f84c2d9c97d (patch)
tree8ad68649054d666cae56cd222dd5a5e3427207c9 /drivers/tty
parente7489622d3603b7d161b484dcd340d9f678b0c7a (diff)
parentf58b20bd6bad48d6fc5633f003c3651115273fb2 (diff)
downloadop-kernel-dev-5c7c3361d177120a9980971380b52f84c2d9c97d.zip
op-kernel-dev-5c7c3361d177120a9980971380b52f84c2d9c97d.tar.gz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Pull sparc fixes from David Miller: "Just some minor fixups, a sunsu console setup panic cure, and recognition of a Fujitsu sun4v cpu." * git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: sparc: remove unused "config BITS" sparc: delete "if !ULTRA_HAS_POPULATION_COUNT" sparc64: correctly recognize SPARC64-X chips sparc,leon: fix GRPCI2 device0 PCI config space access sunsu: Fix panic in case of nonexistent port at "console=ttySY" cmdline option
Diffstat (limited to 'drivers/tty')
-rw-r--r--drivers/tty/serial/sunsu.c21
1 files changed, 9 insertions, 12 deletions
diff --git a/drivers/tty/serial/sunsu.c b/drivers/tty/serial/sunsu.c
index e343d66..451687c 100644
--- a/drivers/tty/serial/sunsu.c
+++ b/drivers/tty/serial/sunsu.c
@@ -968,6 +968,7 @@ static struct uart_ops sunsu_pops = {
#define UART_NR 4
static struct uart_sunsu_port sunsu_ports[UART_NR];
+static int nr_inst; /* Number of already registered ports */
#ifdef CONFIG_SERIO
@@ -1337,13 +1338,8 @@ static int __init sunsu_console_setup(struct console *co, char *options)
printk("Console: ttyS%d (SU)\n",
(sunsu_reg.minor - 64) + co->index);
- /*
- * Check whether an invalid uart number has been specified, and
- * if so, search for the first available port that does have
- * console support.
- */
- if (co->index >= UART_NR)
- co->index = 0;
+ if (co->index > nr_inst)
+ return -ENODEV;
port = &sunsu_ports[co->index].port;
/*
@@ -1408,7 +1404,6 @@ static enum su_type su_get_type(struct device_node *dp)
static int su_probe(struct platform_device *op)
{
- static int inst;
struct device_node *dp = op->dev.of_node;
struct uart_sunsu_port *up;
struct resource *rp;
@@ -1418,16 +1413,16 @@ static int su_probe(struct platform_device *op)
type = su_get_type(dp);
if (type == SU_PORT_PORT) {
- if (inst >= UART_NR)
+ if (nr_inst >= UART_NR)
return -EINVAL;
- up = &sunsu_ports[inst];
+ up = &sunsu_ports[nr_inst];
} else {
up = kzalloc(sizeof(*up), GFP_KERNEL);
if (!up)
return -ENOMEM;
}
- up->port.line = inst;
+ up->port.line = nr_inst;
spin_lock_init(&up->port.lock);
@@ -1461,6 +1456,8 @@ static int su_probe(struct platform_device *op)
}
dev_set_drvdata(&op->dev, up);
+ nr_inst++;
+
return 0;
}
@@ -1488,7 +1485,7 @@ static int su_probe(struct platform_device *op)
dev_set_drvdata(&op->dev, up);
- inst++;
+ nr_inst++;
return 0;
OpenPOWER on IntegriCloud