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| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2019-06-11 21:04:09 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-06-13 22:43:10 -0700 |
| commit | 9b994b4a074c5d1daea0e9d4eb83e0372a3337e5 (patch) | |
| tree | 9126a1698f41abb1748253371bf8af9277649e78 /drivers/net/ethernet/realtek | |
| parent | net: dsa: tag_sja1105: Select CONFIG_PACKING (diff) | |
| download | linux-dev-9b994b4a074c5d1daea0e9d4eb83e0372a3337e5.tar.xz linux-dev-9b994b4a074c5d1daea0e9d4eb83e0372a3337e5.zip | |
r8169: let mdio read functions return -ETIMEDOUT
In case of a timeout currently ~0 is returned. Callers often just check
whether a certain bit is set and therefore may behave incorrectly.
So let's return -ETIMEDOUT in case of a timeout.
r8168_phy_ocp_read is used in r8168g_mdio_read only, therefore we can
apply the same change.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/realtek')
| -rw-r--r-- | drivers/net/ethernet/realtek/r8169_main.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c index ca26cd659ed3..3d44a0769ad1 100644 --- a/drivers/net/ethernet/realtek/r8169_main.c +++ b/drivers/net/ethernet/realtek/r8169_main.c @@ -814,7 +814,7 @@ static void r8168_phy_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data) rtl_udelay_loop_wait_low(tp, &rtl_ocp_gphy_cond, 25, 10); } -static u16 r8168_phy_ocp_read(struct rtl8169_private *tp, u32 reg) +static int r8168_phy_ocp_read(struct rtl8169_private *tp, u32 reg) { if (rtl_ocp_reg_failure(tp, reg)) return 0; @@ -822,7 +822,7 @@ static u16 r8168_phy_ocp_read(struct rtl8169_private *tp, u32 reg) RTL_W32(tp, GPHY_OCP, reg << 15); return rtl_udelay_loop_wait_high(tp, &rtl_ocp_gphy_cond, 25, 10) ? - (RTL_R32(tp, GPHY_OCP) & 0xffff) : ~0; + (RTL_R32(tp, GPHY_OCP) & 0xffff) : -ETIMEDOUT; } static void r8168_mac_ocp_write(struct rtl8169_private *tp, u32 reg, u32 data) @@ -905,7 +905,7 @@ static int r8169_mdio_read(struct rtl8169_private *tp, int reg) RTL_W32(tp, PHYAR, 0x0 | (reg & 0x1f) << 16); value = rtl_udelay_loop_wait_high(tp, &rtl_phyar_cond, 25, 20) ? - RTL_R32(tp, PHYAR) & 0xffff : ~0; + RTL_R32(tp, PHYAR) & 0xffff : -ETIMEDOUT; /* * According to hardware specs a 20us delay is required after read @@ -945,7 +945,7 @@ static int r8168dp_1_mdio_read(struct rtl8169_private *tp, int reg) RTL_W32(tp, EPHY_RXER_NUM, 0); return rtl_udelay_loop_wait_high(tp, &rtl_ocpar_cond, 1000, 100) ? - RTL_R32(tp, OCPDR) & OCPDR_DATA_MASK : ~0; + RTL_R32(tp, OCPDR) & OCPDR_DATA_MASK : -ETIMEDOUT; } #define R8168DP_1_MDIO_ACCESS_BIT 0x00020000 |