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| author | Jiri Kosina <jkosina@suse.cz> | 2012-02-06 16:11:09 +0100 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2012-02-06 16:12:16 +0100 |
| commit | d4730ace0c7dbb64513e35b6fc5fd7e7f381e490 (patch) | |
| tree | 18890c096cdd869a593c56de3257faa40af8e050 /kernel/power/user.c | |
| parent | HID: hyperv: Properly disconnect the input device (diff) | |
| parent | Merge tag 'pm-fixes-for-3.3-rc3' of git://git.kernel.org/pub/scm/linux/kernel... (diff) | |
| download | linux-d4730ace0c7dbb64513e35b6fc5fd7e7f381e490.tar.xz linux-d4730ace0c7dbb64513e35b6fc5fd7e7f381e490.zip | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux into upstream-fixes
Sync with Linus' tree. This is necessary to have a base for
patch that fixes commit 35b4c01e29b ("power_supply: add "powers"
links to self-powered HID devices") which went in through Anton's
tree.
Diffstat (limited to 'kernel/power/user.c')
| -rw-r--r-- | kernel/power/user.c | 15 |
1 files changed, 13 insertions, 2 deletions
diff --git a/kernel/power/user.c b/kernel/power/user.c index 6b1ab7a88522..3e100075b13c 100644 --- a/kernel/power/user.c +++ b/kernel/power/user.c @@ -249,13 +249,15 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, } pm_restore_gfp_mask(); error = hibernation_snapshot(data->platform_support); - if (!error) { + if (error) { + thaw_kernel_threads(); + } else { error = put_user(in_suspend, (int __user *)arg); if (!error && !freezer_test_done) data->ready = 1; if (freezer_test_done) { freezer_test_done = false; - thaw_processes(); + thaw_kernel_threads(); } } break; @@ -274,6 +276,15 @@ static long snapshot_ioctl(struct file *filp, unsigned int cmd, swsusp_free(); memset(&data->handle, 0, sizeof(struct snapshot_handle)); data->ready = 0; + /* + * It is necessary to thaw kernel threads here, because + * SNAPSHOT_CREATE_IMAGE may be invoked directly after + * SNAPSHOT_FREE. In that case, if kernel threads were not + * thawed, the preallocation of memory carried out by + * hibernation_snapshot() might run into problems (i.e. it + * might fail or even deadlock). + */ + thaw_kernel_threads(); break; case SNAPSHOT_PREF_IMAGE_SIZE: |