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TTY: call tty_port_destroy in the rest of drivers

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After commit "TTY: move tty buffers to tty_port", the tty buffers are
not freed in some drivers. This is because tty_port_destructor is not
called whenever a tty_port is freed. This was an assumption I counted
with but was unfortunately untrue. So fix the drivers to fulfil this
assumption.

To be sure, the TTY buffers (and later some stuff) are gone along with
the tty_port, we have to call tty_port_destroy at tear-down places.
This is mostly where the structure containing a tty_port is freed.
This patch does exactly that -- put tty_port_destroy at those places.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby
2012-11-15 09:49:56 +01:00
committed by Greg Kroah-Hartman
parent d0f59141ca
commit 191c5f1027
41 changed files with 139 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/isdn/gigaset/common.c
+6 -4
View File
@@ -518,6 +518,7 @@ f_bcs: gig_dbg(DEBUG_INIT, "freeing bcs[]");
kfree(cs->bcs);
f_cs: gig_dbg(DEBUG_INIT, "freeing cs");
mutex_unlock(&cs->mutex);
tty_port_destroy(&cs->port);
free_cs(cs);
}
EXPORT_SYMBOL_GPL(gigaset_freecs);
@@ -751,14 +752,14 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
gig_dbg(DEBUG_INIT, "setting up iif");
if (gigaset_isdn_regdev(cs, modulename) < 0) {
pr_err("error registering ISDN device\n");
goto error;
goto error_port;
}
make_valid(cs, VALID_ID);
++cs->cs_init;
gig_dbg(DEBUG_INIT, "setting up hw");
if (cs->ops->initcshw(cs) < 0)
goto error;
goto error_port;
++cs->cs_init;
@@ -773,7 +774,7 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
gig_dbg(DEBUG_INIT, "setting up bcs[%d]", i);
if (gigaset_initbcs(cs->bcs + i, cs, i) < 0) {
pr_err("could not allocate channel %d data\n", i);
goto error;
goto error_port;
}
}
@@ -786,7 +787,8 @@ struct cardstate *gigaset_initcs(struct gigaset_driver *drv, int channels,
gig_dbg(DEBUG_INIT, "cs initialized");
return cs;
error_port:
tty_port_destroy(&cs->port);
error:
gig_dbg(DEBUG_INIT, "failed");
gigaset_freecs(cs);
drivers/isdn/i4l/isdn_tty.c
+4
View File
@@ -1849,6 +1849,8 @@ err_unregister:
kfree(info->fax);
#endif
kfree(info->port.xmit_buf - 4);
info->port.xmit_buf = NULL;
tty_port_destroy(&info->port);
}
tty_unregister_driver(m->tty_modem);
err:
@@ -1870,6 +1872,8 @@ isdn_tty_exit(void)
kfree(info->fax);
#endif
kfree(info->port.xmit_buf - 4);
info->port.xmit_buf = NULL;
tty_port_destroy(&info->port);
}
tty_unregister_driver(dev->mdm.tty_modem);
put_tty_driver(dev->mdm.tty_modem);