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Message-ID: <20120816131656.GB23279@elgon.mountain>
Date: Thu, 16 Aug 2012 16:16:56 +0300
From: Dan Carpenter <dan.carpenter@...cle.com>
To: Jiri Slaby <jslaby@...e.cz>
Cc: Arnd Bergmann <arnd@...db.de>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [patch] TTY: tty_alloc_driver() returns error pointers
We changed these from alloc_tty_driver() to tty_alloc_driver() so the
error handling needs to modified to check for IS_ERR() instead of NULL.
Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
---
Only needed on linux-next.
diff --git a/drivers/tty/pty.c b/drivers/tty/pty.c
index f5a27c6..2bace84 100644
--- a/drivers/tty/pty.c
+++ b/drivers/tty/pty.c
@@ -448,14 +448,14 @@ static void __init legacy_pty_init(void)
TTY_DRIVER_RESET_TERMIOS |
TTY_DRIVER_REAL_RAW |
TTY_DRIVER_DYNAMIC_ALLOC);
- if (!pty_driver)
+ if (IS_ERR(pty_driver))
panic("Couldn't allocate pty driver");
pty_slave_driver = tty_alloc_driver(legacy_count,
TTY_DRIVER_RESET_TERMIOS |
TTY_DRIVER_REAL_RAW |
TTY_DRIVER_DYNAMIC_ALLOC);
- if (!pty_slave_driver)
+ if (IS_ERR(pty_slave_driver))
panic("Couldn't allocate pty slave driver");
pty_driver->driver_name = "pty_master";
@@ -682,7 +682,7 @@ static void __init unix98_pty_init(void)
TTY_DRIVER_DYNAMIC_DEV |
TTY_DRIVER_DEVPTS_MEM |
TTY_DRIVER_DYNAMIC_ALLOC);
- if (!ptm_driver)
+ if (IS_ERR(ptm_driver))
panic("Couldn't allocate Unix98 ptm driver");
pts_driver = tty_alloc_driver(NR_UNIX98_PTY_MAX,
TTY_DRIVER_RESET_TERMIOS |
@@ -690,7 +690,7 @@ static void __init unix98_pty_init(void)
TTY_DRIVER_DYNAMIC_DEV |
TTY_DRIVER_DEVPTS_MEM |
TTY_DRIVER_DYNAMIC_ALLOC);
- if (!pts_driver)
+ if (IS_ERR(pts_driver))
panic("Couldn't allocate Unix98 pts driver");
ptm_driver->driver_name = "pty_master";
diff --git a/drivers/tty/moxa.c b/drivers/tty/moxa.c
index 3b17a04..56e616b 100644
--- a/drivers/tty/moxa.c
+++ b/drivers/tty/moxa.c
@@ -1048,8 +1048,8 @@ static int __init moxa_init(void)
moxaDriver = tty_alloc_driver(MAX_PORTS + 1,
TTY_DRIVER_REAL_RAW |
TTY_DRIVER_DYNAMIC_DEV);
- if (!moxaDriver)
- return -ENOMEM;
+ if (IS_ERR(moxaDriver))
+ return PTR_ERR(moxaDriver);
moxaDriver->name = "ttyMX";
moxaDriver->major = ttymajor;
diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index d9335ae..5db08c7 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -2813,8 +2813,8 @@ static int __init synclink_cs_init(void)
serial_driver = tty_alloc_driver(MAX_DEVICE_COUNT,
TTY_DRIVER_REAL_RAW |
TTY_DRIVER_DYNAMIC_DEV);
- if (!serial_driver) {
- rc = -ENOMEM;
+ if (IS_ERR(serial_driver)) {
+ rc = PTR_ERR(serial_driver);
goto err;
}
diff --git a/drivers/char/ttyprintk.c b/drivers/char/ttyprintk.c
index 561f8aa..af98f6d 100644
--- a/drivers/char/ttyprintk.c
+++ b/drivers/char/ttyprintk.c
@@ -187,8 +187,8 @@ static int __init ttyprintk_init(void)
TTY_DRIVER_RESET_TERMIOS |
TTY_DRIVER_REAL_RAW |
TTY_DRIVER_UNNUMBERED_NODE);
- if (!ttyprintk_driver)
- return ret;
+ if (IS_ERR(ttyprintk_driver))
+ return PTR_ERR(ttyprintk_driver);
ttyprintk_driver->driver_name = "ttyprintk";
ttyprintk_driver->name = "ttyprintk";
--
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