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path: root/drivers/net/e1000/e1000_hw.c
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Diffstat (limited to 'drivers/net/e1000/e1000_hw.c')
-rw-r--r--drivers/net/e1000/e1000_hw.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/net/e1000/e1000_hw.c b/drivers/net/e1000/e1000_hw.c
index 9d6edf3e73f..d04eef53571 100644
--- a/drivers/net/e1000/e1000_hw.c
+++ b/drivers/net/e1000/e1000_hw.c
@@ -144,6 +144,8 @@ static s32 e1000_host_if_read_cookie(struct e1000_hw *hw, u8 *buffer);
static u8 e1000_calculate_mng_checksum(char *buffer, u32 length);
static s32 e1000_configure_kmrn_for_10_100(struct e1000_hw *hw, u16 duplex);
static s32 e1000_configure_kmrn_for_1000(struct e1000_hw *hw);
+static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data);
+static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data);
/* IGP cable length table */
static const
@@ -168,6 +170,8 @@ u16 e1000_igp_2_cable_length_table[IGP02E1000_AGC_LENGTH_TABLE_SIZE] =
83, 89, 95, 100, 105, 109, 113, 116, 119, 122, 124,
104, 109, 114, 118, 121, 124};
+static DEFINE_SPINLOCK(e1000_eeprom_lock);
+
/******************************************************************************
* Set the phy type member in the hw struct.
*
@@ -4904,6 +4908,15 @@ static s32 e1000_spi_eeprom_ready(struct e1000_hw *hw)
*****************************************************************************/
s32 e1000_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
{
+ s32 ret;
+ spin_lock(&e1000_eeprom_lock);
+ ret = e1000_do_read_eeprom(hw, offset, words, data);
+ spin_unlock(&e1000_eeprom_lock);
+ return ret;
+}
+
+static s32 e1000_do_read_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
+{
struct e1000_eeprom_info *eeprom = &hw->eeprom;
u32 i = 0;
@@ -5236,6 +5249,16 @@ s32 e1000_update_eeprom_checksum(struct e1000_hw *hw)
*****************************************************************************/
s32 e1000_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
{
+ s32 ret;
+ spin_lock(&e1000_eeprom_lock);
+ ret = e1000_do_write_eeprom(hw, offset, words, data);
+ spin_unlock(&e1000_eeprom_lock);
+ return ret;
+}
+
+
+static s32 e1000_do_write_eeprom(struct e1000_hw *hw, u16 offset, u16 words, u16 *data)
+{
struct e1000_eeprom_info *eeprom = &hw->eeprom;
s32 status = 0;