[PATCH] make SMP power off work when APM is a module

From: Stephen Rothwell (sfr@linuxcare.com.au)
Date: Mon Nov 13 2000 - 22:13:03 EST


Hi Linus,

This patch corrects the return codes from apm's init routine
and in particular should allow SMP power off to work when APM
is compiled as a module.

Cheers,
Stephen

-- 
Stephen Rothwell, Open Source Researcher, Linuxcare, Inc.
+61-2-62628990 tel, +61-2-62628991 fax 
sfr@linuxcare.com, http://www.linuxcare.com/ 
Linuxcare. Support for the revolution.

diff -ruN 2.4.0-test11pre4/arch/i386/kernel/apm.c 2.4.0-test11pre4-APM.1/arch/i386/kernel/apm.c --- 2.4.0-test11pre4/arch/i386/kernel/apm.c Mon Nov 13 17:46:42 2000 +++ 2.4.0-test11pre4-APM.1/arch/i386/kernel/apm.c Tue Nov 14 00:30:28 2000 @@ -1571,8 +1571,6 @@ &apm_bios_fops }; -#define APM_INIT_ERROR_RETURN return -1 - /* * Just start the APM thread. We do NOT want to do APM BIOS * calls from anything but the APM thread, if for no other reason @@ -1587,7 +1585,7 @@ { if (apm_bios_info.version == 0) { printk(KERN_INFO "apm: BIOS not found.\n"); - APM_INIT_ERROR_RETURN; + return -ENODEV; } printk(KERN_INFO "apm: BIOS version %d.%d Flags 0x%02x (Driver version %s)\n", @@ -1597,7 +1595,7 @@ driver_version); if ((apm_bios_info.flags & APM_32_BIT_SUPPORT) == 0) { printk(KERN_INFO "apm: no 32 bit BIOS support\n"); - APM_INIT_ERROR_RETURN; + return -ENODEV; } /* @@ -1626,15 +1624,15 @@ if (apm_disabled) { printk(KERN_NOTICE "apm: disabled on user request.\n"); - APM_INIT_ERROR_RETURN; + return -ENODEV; } if ((smp_num_cpus > 1) && !power_off) { printk(KERN_NOTICE "apm: disabled - APM is not SMP safe.\n"); - APM_INIT_ERROR_RETURN; + return -ENODEV; } if (PM_IS_ACTIVE()) { printk(KERN_NOTICE "apm: overridden by ACPI.\n"); - APM_INIT_ERROR_RETURN; + return -ENODEV; } pm_active = 1; @@ -1683,7 +1681,7 @@ if (smp_num_cpus > 1) { printk(KERN_NOTICE "apm: disabled - APM is not SMP safe (power off active).\n"); - APM_INIT_ERROR_RETURN; + return 0; } misc_register(&apm_device); - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/



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