| Message ID | 96e52b03-be8d-4050-ae71-bfdb478ff42f@gmail.com (mailing list archive) |
|---|---|
| State | New |
| Delegated to: | Ping-Ke Shih |
| Headers | show |
| Series | [v2,1/3] wifi: rtw88: usb: Copy instead of cloning the RX skb | expand |
Bitterblue Smith <rtl8821cerfe2@gmail.com> wrote: > The firmware message C2H_ADAPTIVITY is currently handled in > rtw_fw_c2h_cmd_rx_irqsafe(), which runs in the RX workqueue, but it's > not "irqsafe" with USB because it sleeps (reads hardware registers). > This becomes a problem after the next patch, which will create the RX > workqueue with the flag WQ_BH. > > To avoid sleeping when it's not allowed, handle C2H_ADAPTIVITY in > rtw_fw_c2h_cmd_handle(), which runs in the c2h workqueue. > > Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com> Acked-by: Ping-Ke Shih <pkshih@realtek.com>
diff --git a/drivers/net/wireless/realtek/rtw88/fw.c b/drivers/net/wireless/realtek/rtw88/fw.c index e6e9946fbf44..02389b7c6876 100644 --- a/drivers/net/wireless/realtek/rtw88/fw.c +++ b/drivers/net/wireless/realtek/rtw88/fw.c @@ -332,6 +332,9 @@ void rtw_fw_c2h_cmd_handle(struct rtw_dev *rtwdev, struct sk_buff *skb) case C2H_RA_RPT: rtw_fw_ra_report_handle(rtwdev, c2h->payload, len); break; + case C2H_ADAPTIVITY: + rtw_fw_adaptivity_result(rtwdev, c2h->payload, len); + break; default: rtw_dbg(rtwdev, RTW_DBG_FW, "C2H 0x%x isn't handled\n", c2h->id); break; @@ -367,10 +370,6 @@ void rtw_fw_c2h_cmd_rx_irqsafe(struct rtw_dev *rtwdev, u32 pkt_offset, rtw_fw_scan_result(rtwdev, c2h->payload, len); dev_kfree_skb_any(skb); break; - case C2H_ADAPTIVITY: - rtw_fw_adaptivity_result(rtwdev, c2h->payload, len); - dev_kfree_skb_any(skb); - break; default: /* pass offset for further operation */ *((u32 *)skb->cb) = pkt_offset;
The firmware message C2H_ADAPTIVITY is currently handled in rtw_fw_c2h_cmd_rx_irqsafe(), which runs in the RX workqueue, but it's not "irqsafe" with USB because it sleeps (reads hardware registers). This becomes a problem after the next patch, which will create the RX workqueue with the flag WQ_BH. To avoid sleeping when it's not allowed, handle C2H_ADAPTIVITY in rtw_fw_c2h_cmd_handle(), which runs in the c2h workqueue. Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com> --- v2: - Patch is new in v2. --- drivers/net/wireless/realtek/rtw88/fw.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-)