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Staging driver fix for 4.15-rc8

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Here is a single android ashmem bugfix that resolves a reported issue in
 that interface.  It's been in linux-next this week with no reported
 issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

Pull staging driver fix from Greg KH:
 "Here is a single android ashmem bugfix that resolves a reported issue
  in that interface. It's been in linux-next this week with no reported
  issues"

* tag 'staging-4.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
  staging: android: ashmem: fix a race condition in ASHMEM_SET_SIZE ioctl
This commit is contained in:
Linus Torvalds 2018-01-13 14:04:06 -08:00
commit d5a047fd92
1 changed files with 2 additions and 0 deletions
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2
drivers/staging/android/ashmem.c
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@ -765,10 +765,12 @@ static long ashmem_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
break;
case ASHMEM_SET_SIZE:
ret = -EINVAL;
mutex_lock(&ashmem_mutex);
if (!asma->file) {
ret = 0;
asma->size = (size_t)arg;
}
mutex_unlock(&ashmem_mutex);
break;
case ASHMEM_GET_SIZE:
ret = asma->size;