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[2003:ea:8f06:5500:6dbb:aa76:4e1a:5cc4]) by smtp.googlemail.com with ESMTPSA id s12sm11847874wmh.29.2021.01.08.04.00.24 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 08 Jan 2021 04:00:24 -0800 (PST) Subject: [PATCH net-next v2 2/3] r8169: improve rtl_ocp_reg_failure From: Heiner Kallweit To: Jakub Kicinski , David Miller , Realtek linux nic maintainers Cc: "netdev@vger.kernel.org" References: <938caef4-8a0b-bbbd-66aa-76f758ff877a@gmail.com> Message-ID: <502d3af4-bef0-c6c3-0858-5156124df7ac@gmail.com> Date: Fri, 8 Jan 2021 12:58:54 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: <938caef4-8a0b-bbbd-66aa-76f758ff877a@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Use WARN_ONCE here to get a call trace in case of a problem. This facilitates finding the offending code part. Signed-off-by: Heiner Kallweit --- drivers/net/ethernet/realtek/r8169_main.c | 17 ++++++----------- 1 file changed, 6 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index 9af048ad0..6005d37b6 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -810,14 +810,9 @@ static void rtl_eri_clear_bits(struct rtl8169_private *tp, int addr, u32 m) rtl_w0w1_eri(tp, addr, 0, m); } -static bool rtl_ocp_reg_failure(struct rtl8169_private *tp, u32 reg) +static bool rtl_ocp_reg_failure(u32 reg) { - if (reg & 0xffff0001) { - if (net_ratelimit()) - netdev_err(tp->dev, "Invalid ocp reg %x!\n", reg); - return true; - } - return false; + return WARN_ONCE(reg & 0xffff0001, "Invalid ocp reg %x!\n", reg); } DECLARE_RTL_COND(rtl_ocp_gphy_cond) @@ -827,7 +822,7 @@ DECLARE_RTL_COND(rtl_ocp_gphy_cond) static void r8168_phy_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data) { - if (rtl_ocp_reg_failure(tp, reg)) + if (rtl_ocp_reg_failure(reg)) return; RTL_W32(tp, GPHY_OCP, OCPAR_FLAG | (reg << 15) | data); @@ -837,7 +832,7 @@ static void r8168_phy_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data) static int r8168_phy_ocp_read(struct rtl8169_private *tp, u32 reg) { - if (rtl_ocp_reg_failure(tp, reg)) + if (rtl_ocp_reg_failure(reg)) return 0; RTL_W32(tp, GPHY_OCP, reg << 15); @@ -848,7 +843,7 @@ static int r8168_phy_ocp_read(struct rtl8169_private *tp, u32 reg) static void r8168_mac_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data) { - if (rtl_ocp_reg_failure(tp, reg)) + if (rtl_ocp_reg_failure(reg)) return; RTL_W32(tp, OCPDR, OCPAR_FLAG | (reg << 15) | data); @@ -856,7 +851,7 @@ static void r8168_mac_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data) static u16 r8168_mac_ocp_read(struct rtl8169_private *tp, u32 reg) { - if (rtl_ocp_reg_failure(tp, reg)) + if (rtl_ocp_reg_failure(reg)) return 0; RTL_W32(tp, OCPDR, reg << 15); -- 2.30.0