2005-05-18 04:37:01

by Jeff Dike

[permalink] [raw]
Subject: [PATCH 9/9] 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 <[email protected]>

Index: linux-2.6.12-rc/arch/um/drivers/chan_kern.c
===================================================================
--- linux-2.6.12-rc.orig/arch/um/drivers/chan_kern.c 2005-05-17 18:02:25.000000000 -0400
+++ linux-2.6.12-rc/arch/um/drivers/chan_kern.c 2005-05-17 18:27:15.000000000 -0400
@@ -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 void *not_configged_init(char *st
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_write(int fd, c
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_console_write(i
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);
}