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Commit 6b01d30e authored by Mart Gerrits's avatar Mart Gerrits Committed by Wim Van Sebroeck
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watchdog: Fix POST failure on ASUS P5N32-E SLI and similar boards 



At present the module does not unset the NO_REBOOT bit upon shutdown, this
causes the BIOS to fail the POST once and reset. During the next boot it
displays the following error message:

***** Warning: System BOOT Fail *****
Your system last boot fail or POST interrupted.
Please enter setup to load default and reboot again.
Press F1 to continue, DEL to enter SETUP

With this patch the NO_REBOOT flag will be unset on shutdown and thus stop
this failure from occurring.

Tested on 'ASUS P5N32-E SLI with BIOS revision 1801' and
          'ASUS P5N32-E SLI PLUS with BIOS revision 1502'.

Signed-off-by: default avatarMart Gerrits <mart1987@gmail.com>
Signed-off-by: default avatarWim Van Sebroeck <wim@iguana.be>
parent bea19066

drivers/watchdog/nv_tco.c

+8 −0
Original line number Diff line number Diff line
@@ -458,7 +458,15 @@ static int __devexit nv_tco_remove(struct platform_device *dev) 


static void nv_tco_shutdown(struct platform_device *dev)

{

	u32 val;



	tco_timer_stop();



	/* Some BIOSes fail the POST (once) if the NO_REBOOT flag is not

	 * unset during shutdown. */

	pci_read_config_dword(tco_pci, MCP51_SMBUS_SETUP_B, &val);

	val &= ~MCP51_SMBUS_SETUP_B_TCO_REBOOT;

	pci_write_config_dword(tco_pci, MCP51_SMBUS_SETUP_B, val);

}



static struct platform_driver nv_tco_driver = {