From f62cdab7f5db4552067996f888d3874e2171c604 Mon Sep 17 00:00:00 2001 From: Chris Chiu Date: Fri, 2 Jul 2021 00:33:54 +0800 Subject: [PATCH] rtl8xxxu: disable interrupt_in transfer for 8188cu and 8192cu There will be crazy numbers of interrupts triggered by 8188cu and 8192cu module, around 8000~10000 interrupts per second, on the usb host controller. Compare with the vendor driver source code, it's mapping to the configuration CONFIG_USB_INTERRUPT_IN_PIPE and it is disabled by default. Since the interrupt transfer is neither used for TX/RX nor H2C commands. Disable it to avoid the excessive amount of interrupts for the 8188cu and 8192cu module which I only have for verification. Signed-off-by: Chris Chiu Tested-by: reto.schneider@husqvarnagroup.com Acked-by: Jes Sorensen Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20210701163354.118403-1-chris.chiu@canonical.com --- drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c index ac1061caacd65..0827be68d073c 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c @@ -1670,7 +1670,7 @@ static int rtl8xxxu_identify_chip(struct rtl8xxxu_priv *priv) priv->rf_paths = 2; priv->rx_paths = 2; priv->tx_paths = 2; - priv->usb_interrupts = 1; + priv->usb_interrupts = 0; priv->rtl_chip = RTL8192C; } priv->has_wifi = 1; @@ -1680,7 +1680,7 @@ static int rtl8xxxu_identify_chip(struct rtl8xxxu_priv *priv) priv->rx_paths = 1; priv->tx_paths = 1; priv->rtl_chip = RTL8188C; - priv->usb_interrupts = 1; + priv->usb_interrupts = 0; priv->has_wifi = 1; } -- 2.30.2