diff options
| author | Pradeep Kumar Chitrapu <pradeepc@codeaurora.org> | 2021-02-18 21:27:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-05-19 11:12:51 +0300 |
| commit | bd6017a942b9343c1e6a99eef9c64fa264a1a53b (patch) | |
| tree | 9b2e2688e2ca264f7350e39d50a66109b6ef7554 /drivers | |
| parent | 21756f878e827784213df136e678fed0ce9f0e30 (diff) | |
| download | linux-bd6017a942b9343c1e6a99eef9c64fa264a1a53b.tar.xz | |
ath11k: fix thermal temperature read
[ Upstream commit e3de5bb7ac1a4cb262f8768924fd3ef6182b10bb ]
Fix dangling pointer in thermal temperature event which causes
incorrect temperature read.
Tested-on: IPQ8074 AHB WLAN.HK.2.4.0.1-00041-QCAHKSWPL_SILICONZ-1
Signed-off-by: Pradeep Kumar Chitrapu <pradeepc@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210218182708.8844-1-pradeepc@codeaurora.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/wireless/ath/ath11k/wmi.c | 53 |
1 files changed, 21 insertions, 32 deletions
diff --git a/drivers/net/wireless/ath/ath11k/wmi.c b/drivers/net/wireless/ath/ath11k/wmi.c index 173ab6ceed1f..eca86225a341 100644 --- a/drivers/net/wireless/ath/ath11k/wmi.c +++ b/drivers/net/wireless/ath/ath11k/wmi.c @@ -4986,31 +4986,6 @@ int ath11k_wmi_pull_fw_stats(struct ath11k_base *ab, struct sk_buff *skb, return 0; } -static int -ath11k_pull_pdev_temp_ev(struct ath11k_base *ab, u8 *evt_buf, - u32 len, const struct wmi_pdev_temperature_event *ev) -{ - const void **tb; - int ret; - - tb = ath11k_wmi_tlv_parse_alloc(ab, evt_buf, len, GFP_ATOMIC); - if (IS_ERR(tb)) { - ret = PTR_ERR(tb); - ath11k_warn(ab, "failed to parse tlv: %d\n", ret); - return ret; - } - - ev = tb[WMI_TAG_PDEV_TEMPERATURE_EVENT]; - if (!ev) { - ath11k_warn(ab, "failed to fetch pdev temp ev"); - kfree(tb); - return -EPROTO; - } - - kfree(tb); - return 0; -} - size_t ath11k_wmi_fw_stats_num_vdevs(struct list_head *head) { struct ath11k_fw_stats_vdev *i; @@ -6390,23 +6365,37 @@ ath11k_wmi_pdev_temperature_event(struct ath11k_base *ab, struct sk_buff *skb) { struct ath11k *ar; - struct wmi_pdev_temperature_event ev = {0}; + const void **tb; + const struct wmi_pdev_temperature_event *ev; + int ret; + + tb = ath11k_wmi_tlv_parse_alloc(ab, skb->data, skb->len, GFP_ATOMIC); + if (IS_ERR(tb)) { + ret = PTR_ERR(tb); + ath11k_warn(ab, "failed to parse tlv: %d\n", ret); + return; + } - if (ath11k_pull_pdev_temp_ev(ab, skb->data, skb->len, &ev) != 0) { - ath11k_warn(ab, "failed to extract pdev temperature event"); + ev = tb[WMI_TAG_PDEV_TEMPERATURE_EVENT]; + if (!ev) { + ath11k_warn(ab, "failed to fetch pdev temp ev"); + kfree(tb); return; } ath11k_dbg(ab, ATH11K_DBG_WMI, - "pdev temperature ev temp %d pdev_id %d\n", ev.temp, ev.pdev_id); + "pdev temperature ev temp %d pdev_id %d\n", ev->temp, ev->pdev_id); - ar = ath11k_mac_get_ar_by_pdev_id(ab, ev.pdev_id); + ar = ath11k_mac_get_ar_by_pdev_id(ab, ev->pdev_id); if (!ar) { - ath11k_warn(ab, "invalid pdev id in pdev temperature ev %d", ev.pdev_id); + ath11k_warn(ab, "invalid pdev id in pdev temperature ev %d", ev->pdev_id); + kfree(tb); return; } - ath11k_thermal_event_temperature(ar, ev.temp); + ath11k_thermal_event_temperature(ar, ev->temp); + + kfree(tb); } static void ath11k_wmi_tlv_op_rx(struct ath11k_base *ab, struct sk_buff *skb) |