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Date: Thu, 23 Jan 2014 23:43:43 +0100 From: Nikolay Aleksandrov <nikolay@...hat.com> To: netdev@...r.kernel.org Cc: davem@...emloft.net, zoltan.kiss@...rix.com, andy@...yhouse.net, vfalico@...hat.com, fubar@...ibm.com, nikolay@...hat.com Subject: [PATCH net-next] bonding: fix u64 division After the option conversion downdelay and updelay divide a u64 and on a 32 bit this causes the following errors: ERROR: "__udivdi3" [drivers/net/bonding/bonding.ko] undefined! ERROR: "__umoddi3" [drivers/net/bonding/bonding.ko] undefined! Fix it by using a normal int instead because newval->value is capped at INT_MAX by the way the option is defined. Signed-off-by: Nikolay Aleksandrov <nikolay@...hat.com> --- This is what I meant, but it's only compile-tested, I can't test it until tomorrow. drivers/net/bonding/bond_options.c | 24 ++++++++++++++---------- 1 file changed, 14 insertions(+), 10 deletions(-) diff --git a/drivers/net/bonding/bond_options.c b/drivers/net/bonding/bond_options.c index 4cee04a..11cb943 100644 --- a/drivers/net/bonding/bond_options.c +++ b/drivers/net/bonding/bond_options.c @@ -727,19 +727,21 @@ int bond_option_miimon_set(struct bonding *bond, struct bond_opt_value *newval) int bond_option_updelay_set(struct bonding *bond, struct bond_opt_value *newval) { + int value = newval->value; + if (!bond->params.miimon) { pr_err("%s: Unable to set up delay as MII monitoring is disabled\n", bond->dev->name); return -EPERM; } - if ((newval->value % bond->params.miimon) != 0) { - pr_warn("%s: Warning: up delay (%llu) is not a multiple of miimon (%d), updelay rounded to %llu ms\n", - bond->dev->name, newval->value, + if ((value % bond->params.miimon) != 0) { + pr_warn("%s: Warning: up delay (%d) is not a multiple of miimon (%d), updelay rounded to %d ms\n", + bond->dev->name, value, bond->params.miimon, - (newval->value / bond->params.miimon) * + (value / bond->params.miimon) * bond->params.miimon); } - bond->params.updelay = newval->value / bond->params.miimon; + bond->params.updelay = value / bond->params.miimon; pr_info("%s: Setting up delay to %d.\n", bond->dev->name, bond->params.updelay * bond->params.miimon); @@ -750,19 +752,21 @@ int bond_option_updelay_set(struct bonding *bond, struct bond_opt_value *newval) int bond_option_downdelay_set(struct bonding *bond, struct bond_opt_value *newval) { + int value = newval->value; + if (!bond->params.miimon) { pr_err("%s: Unable to set down delay as MII monitoring is disabled\n", bond->dev->name); return -EPERM; } - if ((newval->value % bond->params.miimon) != 0) { - pr_warn("%s: Warning: down delay (%llu) is not a multiple of miimon (%d), delay rounded to %llu ms\n", - bond->dev->name, newval->value, + if ((value % bond->params.miimon) != 0) { + pr_warn("%s: Warning: down delay (%d) is not a multiple of miimon (%d), delay rounded to %d ms\n", + bond->dev->name, value, bond->params.miimon, - (newval->value / bond->params.miimon) * + (value / bond->params.miimon) * bond->params.miimon); } - bond->params.downdelay = newval->value / bond->params.miimon; + bond->params.downdelay = value / bond->params.miimon; pr_info("%s: Setting down delay to %d.\n", bond->dev->name, bond->params.downdelay * bond->params.miimon); -- 1.8.4.2 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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