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thunderbolt: xdomain: Fix to check return value of kmemdup

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kmemdup can fail and return a NULL pointer. The patch modifies the
signature of tb_xdp_schedule_request and passes the failure error upstream.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
This commit is contained in:
Aditya Pakki 2019-03-20 11:47:20 -05:00 committed by Mika Westerberg
parent 9aabb68568
commit 48f40b96de
1 changed files with 9 additions and 6 deletions
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15
drivers/thunderbolt/xdomain.c
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@ -526,7 +526,7 @@ out:
kfree(xw);
}
static void
static bool
tb_xdp_schedule_request(struct tb *tb, const struct tb_xdp_header *hdr,
size_t size)
{
@ -534,13 +534,18 @@ tb_xdp_schedule_request(struct tb *tb, const struct tb_xdp_header *hdr,
xw = kmalloc(sizeof(*xw), GFP_KERNEL);
if (!xw)
return;
return false;
INIT_WORK(&xw->work, tb_xdp_handle_request);
xw->pkg = kmemdup(hdr, size, GFP_KERNEL);
if (!xw->pkg) {
kfree(xw);
return false;
}
xw->tb = tb;
queue_work(tb->wq, &xw->work);
return true;
}
/**
@ -1422,10 +1427,8 @@ bool tb_xdomain_handle_request(struct tb *tb, enum tb_cfg_pkg_type type,
* handlers in turn.
*/
if (uuid_equal(&hdr->uuid, &tb_xdp_uuid)) {
if (type == TB_CFG_PKG_XDOMAIN_REQ) {
tb_xdp_schedule_request(tb, hdr, size);
return true;
}
if (type == TB_CFG_PKG_XDOMAIN_REQ)
return tb_xdp_schedule_request(tb, hdr, size);
return false;
}