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| author | David S. Miller <davem@davemloft.net> | 2019-06-07 20:00:14 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-06-07 20:00:14 +0200 |
| commit | a6cdeeb16bff89c8486324f53577db058cbe81ba (patch) | |
| tree | de2d38e10f5768bdf1d2902112a4803d0ae767f3 /drivers/net/phy/sfp.c | |
| parent | Merge branch 'Xilinx-axienet-driver-updates' (diff) | |
| parent | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net (diff) | |
| download | linux-a6cdeeb16bff89c8486324f53577db058cbe81ba.tar.xz linux-a6cdeeb16bff89c8486324f53577db058cbe81ba.zip | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Some ISDN files that got removed in net-next had some changes
done in mainline, take the removals.
Signed-off-by: David S. Miller <davem@davemloft.net>
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 554acc869c25..a991c80e6567 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -282,6 +282,7 @@ static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf, { struct i2c_msg msgs[2]; u8 bus_addr = a2 ? 0x51 : 0x50; + size_t this_len; int ret; msgs[0].addr = bus_addr; @@ -293,11 +294,26 @@ static int sfp_i2c_read(struct sfp *sfp, bool a2, u8 dev_addr, void *buf, msgs[1].len = len; msgs[1].buf = buf; - ret = i2c_transfer(sfp->i2c, msgs, ARRAY_SIZE(msgs)); - if (ret < 0) - return ret; + while (len) { + this_len = len; + if (this_len > 16) + this_len = 16; - return ret == ARRAY_SIZE(msgs) ? len : 0; + msgs[1].len = this_len; + + ret = i2c_transfer(sfp->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 msgs[1].buf - (u8 *)buf; } static int sfp_i2c_write(struct sfp *sfp, bool a2, u8 dev_addr, void *buf, |