From 78d87e68ee3cacd5ba1a9beaf84a5cd55a65c009 Mon Sep 17 00:00:00 2001 From: Chris Healy Date: Mon, 30 Jan 2023 15:14:02 -0800 Subject: [PATCH] net: phy: meson-gxl: Add generic dummy stubs for MMD register access stable inclusion from stable-v5.10.168 commit 98c93a01608f23a28a3c9e6736f74d078fa8400f category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I7URR4 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=98c93a01608f23a28a3c9e6736f74d078fa8400f ---------------------------------------------------- [ Upstream commit afc2336f89dc0fc0ef25b92366814524b0fd90fb ] The Meson G12A Internal PHY does not support standard IEEE MMD extended register access, therefore add generic dummy stubs to fail the read and write MMD calls. This is necessary to prevent the core PHY code from erroneously believing that EEE is supported by this PHY even though this PHY does not support EEE, as MMD register access returns all FFFFs. Fixes: 5c3407abb338 ("net: phy: meson-gxl: add g12a support") Reviewed-by: Heiner Kallweit Signed-off-by: Chris Healy Reviewed-by: Jerome Brunet Link: https://lore.kernel.org/r/20230130231402.471493-1-cphealy@gmail.com Signed-off-by: Jakub Kicinski Signed-off-by: Sasha Levin Signed-off-by: zhaoxiaoqiang11 --- drivers/net/phy/meson-gxl.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/net/phy/meson-gxl.c b/drivers/net/phy/meson-gxl.c index e8f2ca625837..f7a9e6599a64 100644 --- a/drivers/net/phy/meson-gxl.c +++ b/drivers/net/phy/meson-gxl.c @@ -245,6 +245,8 @@ static struct phy_driver meson_gxl_phy[] = { .config_intr = meson_gxl_config_intr, .suspend = genphy_suspend, .resume = genphy_resume, + .read_mmd = genphy_read_mmd_unsupported, + .write_mmd = genphy_write_mmd_unsupported, }, }; -- GitLab