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Date: Tue, 25 Jan 2022 12:48:15 +0100 From: Horatiu Vultur <horatiu.vultur@...rochip.com> To: <netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: <UNGLinuxDriver@...rochip.com>, <davem@...emloft.net>, <kuba@...nel.org>, <f.fainelli@...il.com>, <vivien.didelot@...il.com>, <vladimir.oltean@....com>, <andrew@...n.ch>, Horatiu Vultur <horatiu.vultur@...rochip.com> Subject: [PATCH net v2 1/2] net: lan966x: Fix sleep in atomic context when injecting frames On lan966x, when injecting a frame it was polling the register QS_INJ_STATUS to see if it can continue with the injection of the frame. The problem was that it was using readx_poll_timeout which could sleep in atomic context. This patch fixes this issue by using readx_poll_timeout_atomic. Fixes: d28d6d2e37d10d ("net: lan966x: add port module support") Signed-off-by: Horatiu Vultur <horatiu.vultur@...rochip.com> --- drivers/net/ethernet/microchip/lan966x/lan966x_main.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c index 4e31239316e8..e62758bcb998 100644 --- a/drivers/net/ethernet/microchip/lan966x/lan966x_main.c +++ b/drivers/net/ethernet/microchip/lan966x/lan966x_main.c @@ -183,9 +183,9 @@ static int lan966x_port_inj_ready(struct lan966x *lan966x, u8 grp) { u32 val; - return readx_poll_timeout(lan966x_port_inj_status, lan966x, val, - QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp), - READL_SLEEP_US, READL_TIMEOUT_US); + return readx_poll_timeout_atomic(lan966x_port_inj_status, lan966x, val, + QS_INJ_STATUS_FIFO_RDY_GET(val) & BIT(grp), + READL_SLEEP_US, READL_TIMEOUT_US); } static int lan966x_port_ifh_xmit(struct sk_buff *skb, -- 2.33.0
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