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| author | Otavio Salvador <otavio@ossystems.com.br> | 2019-07-15 11:15:02 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-07-15 11:15:02 -0300 |
| commit | 6b774eec1f9d3064e9b33634dfa99d5666d0a73a (patch) | |
| tree | 64fa879c312d6a52f90e6dbf3f7be2d66de3ddd4 /drivers/net/phy/sfp.c | |
| parent | 774f42075a4800fe4106dffca804e3207bc3c2e7 (diff) | |
| parent | 286d8c46ed06d5fc1b8c212356a11a19b2c94bc4 (diff) | |
Merge pull request #50 from MaxKrummenacher/4.14-2.0.x-imx
4.14 2.0.x imx
Diffstat (limited to 'drivers/net/phy/sfp.c')
| -rw-r--r-- | drivers/net/phy/sfp.c | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c index 5ab725a571a8..2dcb25aa0452 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -168,6 +168,7 @@ static int sfp__i2c_read(struct i2c_adapter *i2c, u8 bus_addr, u8 dev_addr, void *buf, size_t len) { struct i2c_msg msgs[2]; + size_t this_len; int ret; msgs[0].addr = bus_addr; @@ -179,11 +180,26 @@ static int sfp__i2c_read(struct i2c_adapter *i2c, u8 bus_addr, u8 dev_addr, msgs[1].len = len; msgs[1].buf = buf; - ret = i2c_transfer(i2c, msgs, ARRAY_SIZE(msgs)); - if (ret < 0) - return ret; + while (len) { + this_len = len; + if (this_len > 16) + this_len = 16; + + msgs[1].len = this_len; + + ret = i2c_transfer(i2c, msgs, ARRAY_SIZE(msgs)); + if (ret < 0) + return ret; + + if (ret != ARRAY_SIZE(msgs)) + break; + + msgs[1].buf += this_len; + dev_addr += this_len; + len -= this_len; + } - return ret == ARRAY_SIZE(msgs) ? len : 0; + return msgs[1].buf - (u8 *)buf; } static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 addr, void *buf, |