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| author | Andrew F. Davis <afd@ti.com> | 2016-02-07 20:47:19 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-02-11 19:52:02 +0300 |
| commit | cf13be5afd30363e5e6e1232e004bae99ee3c623 (patch) | |
| tree | 55f6c4278ea207c5dd0e456c4f5c262a8775f7c1 | |
| parent | 68336293462c92ba420528dd293d54ee879b6e15 (diff) | |
| download | linux-cf13be5afd30363e5e6e1232e004bae99ee3c623.tar.xz | |
net: phy: dp83848: Reorganize code for readability and safety
Reorganize code by moving the desired interrupt mask definition
out of function. Also rearrange the enable/disable interrupt function
to prevent accidental over-writing of values in registers.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/phy/dp83848.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/net/phy/dp83848.c b/drivers/net/phy/dp83848.c index d4686d5f6e03..20d3b9dae444 100644 --- a/drivers/net/phy/dp83848.c +++ b/drivers/net/phy/dp83848.c @@ -37,6 +37,12 @@ #define DP83848_MISR_ED_INT_EN BIT(6) /* Energy detect */ #define DP83848_MISR_LQM_INT_EN BIT(7) /* Link Quality Monitor */ +#define DP83848_INT_EN_MASK \ + (DP83848_MISR_ANC_INT_EN | \ + DP83848_MISR_DUP_INT_EN | \ + DP83848_MISR_SPD_INT_EN | \ + DP83848_MISR_LINK_INT_EN) + static int dp83848_ack_interrupt(struct phy_device *phydev) { int err = phy_read(phydev, DP83848_MISR); @@ -46,23 +52,24 @@ static int dp83848_ack_interrupt(struct phy_device *phydev) static int dp83848_config_intr(struct phy_device *phydev) { - int err; + int control, ret; + + control = phy_read(phydev, DP83848_MICR); + if (control < 0) + return control; if (phydev->interrupts == PHY_INTERRUPT_ENABLED) { - err = phy_write(phydev, DP83848_MICR, - DP83848_MICR_INT_OE | - DP83848_MICR_INTEN); - if (err < 0) - return err; - - return phy_write(phydev, DP83848_MISR, - DP83848_MISR_ANC_INT_EN | - DP83848_MISR_DUP_INT_EN | - DP83848_MISR_SPD_INT_EN | - DP83848_MISR_LINK_INT_EN); + control |= DP83848_MICR_INT_OE; + control |= DP83848_MICR_INTEN; + + ret = phy_write(phydev, DP83848_MISR, DP83848_INT_EN_MASK); + if (ret < 0) + return ret; + } else { + control &= ~DP83848_MICR_INTEN; } - return phy_write(phydev, DP83848_MICR, 0x0); + return phy_write(phydev, DP83848_MICR, control); } static struct mdio_device_id __maybe_unused dp83848_tbl[] = { |