diff options
| author | Hendrik Brueckner <brueckner@linux.vnet.ibm.com> | 2009-08-27 03:45:39 +0200 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2009-09-24 07:12:47 +0200 |
| commit | 254be490f257fc3f76ca5f869ac8d107b3827025 (patch) | |
| tree | 8ef8b4540f54600e3f5cb0f82b7922b53b467278 /drivers/char/hvc_iucv.c | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus (diff) | |
| download | linux-254be490f257fc3f76ca5f869ac8d107b3827025.tar.xz linux-254be490f257fc3f76ca5f869ac8d107b3827025.zip | |
hvc_console: Provide (un)locked version for hvc_resize()
Rename the locking free hvc_resize() function to __hvc_resize() and
provide an inline function that locks the hvc_struct and calls
__hvc_resize().
The rationale for this patch is that virtio_console calls the hvc_resize()
function without locking the hvc_struct. So it needs to call the lock
itself.
According to naming rules, the unlocked version is renamed and
prefixed with "__".
References to unlocked function calls in hvc back-ends has been updated.
Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/char/hvc_iucv.c')
| -rw-r--r-- | drivers/char/hvc_iucv.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c index 0ecac7e532f6..b8a5d654d3d0 100644 --- a/drivers/char/hvc_iucv.c +++ b/drivers/char/hvc_iucv.c @@ -273,7 +273,9 @@ static int hvc_iucv_write(struct hvc_iucv_private *priv, case MSG_TYPE_WINSIZE: if (rb->mbuf->datalen != sizeof(struct winsize)) break; - hvc_resize(priv->hvc, *((struct winsize *) rb->mbuf->data)); + /* The caller must ensure that the hvc is locked, which + * is the case when called from hvc_iucv_get_chars() */ + __hvc_resize(priv->hvc, *((struct winsize *) rb->mbuf->data)); break; case MSG_TYPE_ERROR: /* ignored ... */ |