On Monday 14 August 2006 22:06, Laurent Riffard wrote:

Le 14.08.2006 19:47, Laurent Riffard a écrit :

quoted

Le 14.08.2006 18:50, Andrew Morton a écrit :

quoted

On Mon, 14 Aug 2006 16:38:47 +0200
Laurent Riffard [off-list ref] wrote:

quoted

Le 13.08.2006 10:24, Andrew Morton a __crit :

quoted

ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.18-rc4/2.6.18-rc4-mm1/

Hello,

This morning, while trying to suspend to disk, my box started to loop 
displaying the following message:
eth0: trigger_send() called with the transmitter busy.

Here is the scenario. I booted 2.6.18-rc4-mm1 with this command line:
root=/dev/vglinux1/lvroot video=vesafb:ywrap,mtrr splash=silent resume=/dev/hdb7 netconsole=@192.163.0.3/,@192.168.0.1/00:0E:9B:91:ED:72 init 1

Then I issued:
# echo 6 > /proc/sys/kernel/printk
# echo disk > /sys/power/state

ne2k isn't <ahem> the most actively-maintained driver.

But most (I think all) net drivers have problems during suspend when
netconsole is active.  Does disabling netconsole help?

Yes it does. 
 

quoted

Did this operation work OK in earlier kernels, with netconsole enabled?

It's the first time I see such a message. I can't speak for 2.6.18-rc3-mm2 
because it could not suspend at all (did hang right after 
"echo disk > /sys/power/state"), but it worked in earlier kernels.

I'll try with plain 2.6.18-rc4.

Same problem with 2.6.18-rc4.

I think something like this will help (untested):

 kernel/power/disk.c |    7 +++++++
 1 files changed, 7 insertions(+)

Index: linux-2.6.18-rc4-mm1/kernel/power/disk.c
===================================================================

--- linux-2.6.18-rc4-mm1.orig/kernel/power/disk.c
+++ linux-2.6.18-rc4-mm1/kernel/power/disk.c

@@ -119,8 +119,10 @@ int pm_suspend_disk(void)
 	if (error)
 		return error;
 
+	suspend_console();
 	error = device_suspend(PMSG_FREEZE);
 	if (error) {
+		resume_console();
 		printk("Some devices failed to suspend\n");
 		unprepare_processes();
 		return error;

@@ -133,6 +135,7 @@ int pm_suspend_disk(void)
 
 	if (in_suspend) {
 		device_resume();
+		resume_console();
 		pr_debug("PM: writing image.\n");
 		error = swsusp_write();
 		if (!error)

@@ -148,6 +151,7 @@ int pm_suspend_disk(void)
 	swsusp_free();
  Done:
 	device_resume();
+	resume_console();
 	unprepare_processes();
 	return error;
 }

@@ -212,7 +216,9 @@ static int software_resume(void)
 
 	pr_debug("PM: Preparing devices for restore.\n");
 
+	suspend_console();
 	if ((error = device_suspend(PMSG_PRETHAW))) {
+		resume_console();
 		printk("Some devices failed to suspend\n");
 		swsusp_free();
 		goto Thaw;

@@ -224,6 +230,7 @@ static int software_resume(void)
 	swsusp_resume();
 	pr_debug("PM: Restore failed, recovering.n");
 	device_resume();
+	resume_console();
  Thaw:
 	unprepare_processes();
  Done: