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| author | Haojie Li <lihaojie@kylinos.cn> | 2026-08-25 18:08:45 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2026-09-28 23:20:55 +0000 |
| commit | bce7698e2e6565bb765bd0522337f29f5f312624 (patch) | |
| tree | 0b735b7b4a27369cb4d75d9431b3ee59ce7e5bcc /samples/bpf/hbm.h | |
| download | linux-stable-bce7698e2e6565bb765bd0522337f29f5f312624.tar.gz linux-stable-bce7698e2e6565bb765bd0522337f29f5f312624.zip | |
drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform devicegrafted
platform_device_register_data() can fail and return an ERR_PTR, but the
return value is used without checking, leading to an invalid pointer
being stored in ddp_comp[].dev and passed to component_match_add() and
mtk_ddp_comp_init(), which could result in a kernel crash.
Add an IS_ERR() check to jump to the error handling path on failure.
Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195")
Cc: stable@vger.kernel.org
Signed-off-by: Haojie Li <lihaojie@kylinos.cn>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'samples/bpf/hbm.h')
| -rw-r--r-- | samples/bpf/hbm.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/samples/bpf/hbm.h b/samples/bpf/hbm.h new file mode 100644 index 000000000..f0963ed6a --- /dev/null +++ b/samples/bpf/hbm.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 + * + * Copyright (c) 2019 Facebook + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of version 2 of the GNU General Public + * License as published by the Free Software Foundation. + * + * Include file for Host Bandwidth Management (HBM) programs + */ +struct hbm_vqueue { + struct bpf_spin_lock lock; + /* 4 byte hole */ + unsigned long long lasttime; /* In ns */ + int credit; /* In bytes */ + unsigned int rate; /* In bytes per NS << 20 */ +}; + +struct hbm_queue_stats { + unsigned long rate; /* in Mbps*/ + unsigned long stats:1, /* get HBM stats (marked, dropped,..) */ + loopback:1, /* also limit flows using loopback */ + no_cn:1; /* do not use cn flags */ + unsigned long long pkts_marked; + unsigned long long bytes_marked; + unsigned long long pkts_dropped; + unsigned long long bytes_dropped; + unsigned long long pkts_total; + unsigned long long bytes_total; + unsigned long long firstPacketTime; + unsigned long long lastPacketTime; + unsigned long long pkts_ecn_ce; + unsigned long long returnValCount[4]; + unsigned long long sum_cwnd; + unsigned long long sum_rtt; + unsigned long long sum_cwnd_cnt; + long long sum_credit; +}; |