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| author | Peter Korsgaard <jacmet@sunsite.dk> | 2010-05-03 10:01:26 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-05-12 15:02:43 -0700 |
| commit | 523bdd72c535f23103b6cc5d410ffa057af2c7f7 (patch) | |
| tree | 487847495d158f5404c2d5b3c1364884f5736a38 /drivers/net | |
| parent | 4bb6362e180555652885d52000fc156936b6ffe9 (diff) | |
| download | lwn-523bdd72c535f23103b6cc5d410ffa057af2c7f7.tar.gz lwn-523bdd72c535f23103b6cc5d410ffa057af2c7f7.zip | |
dm9601: fix phy/eeprom write routine
commit e9162ab1610531d6ea6c1833daeb2613e44275e8 upstream.
Use correct bit positions in DM_SHARED_CTRL register for writes.
Michael Planes recently encountered a 'KY-RS9600 USB-LAN converter', which
came with a driver CD containing a Linux driver. This driver turns out to
be a copy of dm9601.c with symbols renamed and my copyright stripped.
That aside, it did contain 1 functional change in dm_write_shared_word(),
and after checking the datasheet the original value was indeed wrong
(read versus write bits).
On Michaels HW, this change bumps receive speed from ~30KB/s to ~900KB/s.
On other devices the difference is less spectacular, but still significant
(~30%).
Reported-by: Michael Planes <michael.planes@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/usb/dm9601.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/usb/dm9601.c b/drivers/net/usb/dm9601.c index 3d406f9b2f29..c60625bb6801 100644 --- a/drivers/net/usb/dm9601.c +++ b/drivers/net/usb/dm9601.c @@ -238,7 +238,7 @@ static int dm_write_shared_word(struct usbnet *dev, int phy, u8 reg, __le16 valu goto out; dm_write_reg(dev, DM_SHARED_ADDR, phy ? (reg | 0x40) : reg); - dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1c : 0x14); + dm_write_reg(dev, DM_SHARED_CTRL, phy ? 0x1a : 0x12); for (i = 0; i < DM_TIMEOUT; i++) { u8 tmp; |