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[PATCH] swsusp: fix error handling

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Fix error handling and whitespace in swsusp.c.  swsusp_free() was called when
there was nothing allocating, leading to oops.

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Pavel Machek 2005-07-07 17:56:44 -07:00 committed by Linus Torvalds
parent 3efa147ad7
commit 47b724f3fe
1 changed files with 11 additions and 12 deletions
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23
kernel/power/swsusp.c
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@ -869,13 +869,6 @@ extern asmlinkage int swsusp_arch_resume(void);
asmlinkage int swsusp_save(void)
{
int error = 0;
if ((error = swsusp_swap_check())) {
printk(KERN_ERR "swsusp: FATAL: cannot find swap device, try "
"swapon -a!\n");
return error;
}
return suspend_prepare_image();
}
@ -892,14 +885,20 @@ int swsusp_suspend(void)
* at resume time, and evil weirdness ensues.
*/
if ((error = device_power_down(PMSG_FREEZE))) {
printk(KERN_ERR "Some devices failed to power down, aborting suspend\n");
local_irq_enable();
swsusp_free();
return error;
}
if ((error = swsusp_swap_check())) {
printk(KERN_ERR "swsusp: FATAL: cannot find swap device, try "
"swapon -a!\n");
local_irq_enable();
return error;
}
save_processor_state();
if ((error = swsusp_arch_suspend()))
swsusp_free();
printk("Error %d suspending\n", error);
/* Restore control flow magically appears here */
restore_processor_state();
BUG_ON (nr_copy_pages_check != nr_copy_pages);
@ -1166,9 +1165,9 @@ static int bio_write_page(pgoff_t page_off, void * page)
static const char * sanity_check(void)
{
dump_info();
if(swsusp_info.version_code != LINUX_VERSION_CODE)
if (swsusp_info.version_code != LINUX_VERSION_CODE)
return "kernel version";
if(swsusp_info.num_physpages != num_physpages)
if (swsusp_info.num_physpages != num_physpages)
return "memory size";
if (strcmp(swsusp_info.uts.sysname,system_utsname.sysname))
return "system type";