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libertas: don't blindly try mesh

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The CF card only has a very old firmware (5.0.16p0). This firmware doesn't
know anything about mesh config. However, current code blindly calls
mesh_config when the card is inserted. So check the firmware version before
issuing this command.

Signed-off-by: Holger Schurig <hs4233@mail.mn-solutions.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Holger Schurig 2008-01-16 15:57:44 +01:00 committed by David S. Miller
parent dac10a9f28
commit c9d1be3619
1 changed files with 27 additions and 23 deletions
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50
drivers/net/wireless/libertas/main.c
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@ -1192,31 +1192,35 @@ int lbs_start_card(struct lbs_private *priv)
if (device_create_file(&dev->dev, &dev_attr_lbs_rtap))
lbs_pr_err("cannot register lbs_rtap attribute\n");
/* Enable mesh, if supported, and work out which TLV it uses.
0x100 + 291 is an unofficial value used in 5.110.20.pXX
0x100 + 37 is the official value used in 5.110.21.pXX
but we check them in that order because 20.pXX doesn't
give an error -- it just silently fails. */
/* 5.110.20.pXX firmware will fail the command if the channel
doesn't match the existing channel. But only if the TLV
is correct. If the channel is wrong, _BOTH_ versions will
give an error to 0x100+291, and allow 0x100+37 to succeed.
It's just that 5.110.20.pXX will not have done anything
useful */
lbs_update_channel(priv);
priv->mesh_tlv = 0x100 + 291;
if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
priv->mesh_tlv = 0x100 + 37;
if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
priv->mesh_tlv = 0;
}
if (priv->mesh_tlv) {
lbs_add_mesh(priv);
if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
lbs_pr_err("cannot register lbs_mesh attribute\n");
/* 5.0.16p0 is known to NOT support any mesh */
if (priv->fwrelease > 0x05001000) {
/* Enable mesh, if supported, and work out which TLV it uses.
0x100 + 291 is an unofficial value used in 5.110.20.pXX
0x100 + 37 is the official value used in 5.110.21.pXX
but we check them in that order because 20.pXX doesn't
give an error -- it just silently fails. */
/* 5.110.20.pXX firmware will fail the command if the channel
doesn't match the existing channel. But only if the TLV
is correct. If the channel is wrong, _BOTH_ versions will
give an error to 0x100+291, and allow 0x100+37 to succeed.
It's just that 5.110.20.pXX will not have done anything
useful */
priv->mesh_tlv = 0x100 + 291;
if (lbs_mesh_config(priv, 1, priv->curbssparams.channel)) {
priv->mesh_tlv = 0x100 + 37;
if (lbs_mesh_config(priv, 1, priv->curbssparams.channel))
priv->mesh_tlv = 0;
}
if (priv->mesh_tlv) {
lbs_add_mesh(priv);
if (device_create_file(&dev->dev, &dev_attr_lbs_mesh))
lbs_pr_err("cannot register lbs_mesh attribute\n");
}
}
lbs_debugfs_init_one(priv, dev);