From 70018635969987c1224b27f62c851ac70264f272 Mon Sep 17 00:00:00 2001 From: Tim Harvey Date: Fri, 16 Apr 2021 13:25:09 -0700 Subject: [PATCH] net: e1000: do not attempt to set hwaddr for i210 without FLASH commit f1bcad22dd19 ("net: e1000: add support for writing to EEPROM") adds support for storing hwaddr in EEPROM however i210 devices do not support this and thus results in errors such as: Warning: e1000#0 failed to set MAC address' Check if a flash device is present and if not return -ENOSYS indicating this is not supported. Signed-off-by: Tim Harvey Reviewed-by: Ramon Fried --- drivers/net/e1000.c | 4 ++++ drivers/net/e1000.h | 1 + 2 files changed, 5 insertions(+) diff --git a/drivers/net/e1000.c b/drivers/net/e1000.c index 694114eca7..60613b7df0 100644 --- a/drivers/net/e1000.c +++ b/drivers/net/e1000.c @@ -5673,6 +5673,10 @@ static int e1000_write_hwaddr(struct eth_device *dev) DEBUGOUT("%s: mac=%pM\n", __func__, mac); + if ((hw->eeprom.type == e1000_eeprom_invm) && + !(E1000_READ_REG(hw, EECD) & E1000_EECD_FLASH_DETECTED_I210)) + return -ENOSYS; + memset(current_mac, 0, 6); /* Read from EEPROM, not from registers, to make sure diff --git a/drivers/net/e1000.h b/drivers/net/e1000.h index 072851ba31..082154a997 100644 --- a/drivers/net/e1000.h +++ b/drivers/net/e1000.h @@ -1245,6 +1245,7 @@ struct e1000_hw { #define E1000_EECD_FLUPD 0x00080000 /* Update FLASH */ #define E1000_EECD_FLUPD_I210 0x00800000 /* Update FLASH */ #define E1000_EECD_FLUDONE_I210 0x04000000 /* Update FLASH done*/ +#define E1000_EECD_FLASH_DETECTED_I210 0x00080000 /* FLASH detected */ #define E1000_FLUDONE_ATTEMPTS 20000 #define E1000_EECD_AUPDEN 0x00100000 /* Enable Autonomous FLASH update */ #define E1000_EECD_SHADV 0x00200000 /* Shadow RAM Data Valid */ -- 2.39.5