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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , linux-kernel@vger.kernel.org Subject: [PATCH net-next v2] net: dsa: motorcomm: Remove the redundant MIB clear Date: Thu, 15 Oct 2026 08:44:19 +0800 Message-ID: <20261015004422.1554104-1-mmyangfl@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The MIB clear in yt921x_chip_setup() is redundant. yt921x_dsa_setup() issues a hardware reset first, and the reset itself zeroes all the MIB counters. It does not follow the correct procedure either: CLEAN only takes effect while ALL_PORT is low, so a single-step CLEAN | ALL_PORT write does nothing once ALL_PORT is latched - and this write is what latches it for any CLEAN requested later. Signed-off-by: David Yang Reviewed-by: Andrew Lunn --- v2: - reword v1: https://lore.kernel.org/r/20261010231015.2600207-1-mmyangfl@gmail.com drivers/net/dsa/motorcomm/chip.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/net/dsa/motorcomm/chip.c b/drivers/net/dsa/motorcomm/chip.c index 91cc5647f2b6..5218beb77ec7 100644 --- a/drivers/net/dsa/motorcomm/chip.c +++ b/drivers/net/dsa/motorcomm/chip.c @@ -3902,12 +3902,6 @@ static int yt921x_chip_setup(struct yt921x_priv *priv) return res; #endif - /* Clear MIB */ - ctrl = YT921X_MIB_CTRL_CLEAN | YT921X_MIB_CTRL_ALL_PORT; - res = yt921x_reg_write(priv, YT921X_MIB_CTRL, ctrl); - if (res) - return res; - /* Miscellaneous */ res = yt921x_reg_set_bits(priv, YT921X_SENSOR, YT921X_SENSOR_TEMP); if (res) -- 2.53.0