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firewire: cdev: use kzalloc_flex() to allocate structure with quadlet array

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Some event structures have a trailing flexible array member of quadlets
to store event-specific data. Use kzalloc_flex() to allocate the
structure together with storage for the flexible array member.

Link: https://lore.kernel.org/r/20260928125718.50974-3-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
This commit is contained in:
Takashi Sakamoto 2026-09-28 21:57:16 +09:00
parent 8fa3077dff
commit b1790574d3
1 changed files with 5 additions and 4 deletions
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9
drivers/firewire/core-cdev.c
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@ -683,8 +683,8 @@ static int init_request(struct client *client,
request->length < 4)
return -EINVAL;
e = kmalloc(sizeof(*e) + request->length, GFP_KERNEL);
if (e == NULL)
e = kzalloc_flex(*e, rsp.with_tstamp.data, DIV_ROUND_UP(request->length, sizeof(u32)));
if (!e)
return -ENOMEM;
e->client = client;
@ -1696,7 +1696,7 @@ static int ioctl_send_phy_packet(struct client *client, union ioctl_arg *arg)
if (!client->device->is_local)
return -ENOSYS;
e = kzalloc(sizeof(*e) + sizeof(a->data), GFP_KERNEL);
e = kzalloc_flex(*e, phy_packet.with_tstamp.data, ARRAY_SIZE(a->data));
if (e == NULL)
return -ENOMEM;
@ -1762,7 +1762,8 @@ void fw_cdev_handle_phy_packet(struct fw_card *card, struct fw_packet *p)
if (client->device->card != card)
continue;
struct inbound_phy_packet_event *e = kmalloc(sizeof(*e) + 8, GFP_KERNEL);
struct inbound_phy_packet_event *e =
kzalloc_flex(*e, phy_packet.with_tstamp.data, 2);
if (!e)
break;