[PATCH] uml: Change printf to printk in console driver
From: Al Viro - we have error messages with KERN_ERR in them, so they
should be printk-ed rather than printf-ed.
Signed-off-by: Jeff Dike <jdike@addtoit.com>
Cc: <viro@parcelfarce.linux.theplanet.co.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index 0150038..14a12d6 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -20,9 +20,17 @@
#include "os.h"
#ifdef CONFIG_NOCONFIG_CHAN
+
+/* The printk's here are wrong because we are complaining that there is no
+ * output device, but printk is printing to that output device. The user will
+ * never see the error. printf would be better, except it can't run on a
+ * kernel stack because it will overflow it.
+ * Use printk for now since that will avoid crashing.
+ */
+
static void *not_configged_init(char *str, int device, struct chan_opts *opts)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(NULL);
}
@@ -30,27 +38,27 @@
static int not_configged_open(int input, int output, int primary, void *data,
char **dev_out)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-ENODEV);
}
static void not_configged_close(int fd, void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
}
static int not_configged_read(int fd, char *c_out, void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
static int not_configged_write(int fd, const char *buf, int len, void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
@@ -58,7 +66,7 @@
static int not_configged_console_write(int fd, const char *buf, int len,
void *data)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-EIO);
}
@@ -66,7 +74,7 @@
static int not_configged_window_size(int fd, void *data, unsigned short *rows,
unsigned short *cols)
{
- printf(KERN_ERR "Using a channel type which is configured out of "
+ printk(KERN_ERR "Using a channel type which is configured out of "
"UML\n");
return(-ENODEV);
}