Convert to the much saner new idr interface. The existing code looks buggy to me - ID 0 is treated as no-ID but allocation specifies 0 as lower limit and there's no error handling after partial success. This conversion keeps the bugs unchanged.
Only compile tested. v2: id1 and id2 are now directly used for -errno return and thus should be signed. Make them int instead of u32. This was spotted by kbuild test robot. v3: Further simplify as suggested by Chas Williams. Signed-off-by: Tejun Heo <t...@kernel.org> Acked-by: Chas Williams <c...@cmf.nrl.navy.mil> Reported-by: kbuild test robot <fengguang...@intel.com> Cc: net...@vger.kernel.org --- drivers/atm/nicstar.c | 24 ++++++------------------ 1 file changed, 6 insertions(+), 18 deletions(-) --- a/drivers/atm/nicstar.c +++ b/drivers/atm/nicstar.c @@ -949,11 +949,10 @@ static void free_scq(ns_dev *card, scq_i static void push_rxbufs(ns_dev * card, struct sk_buff *skb) { struct sk_buff *handle1, *handle2; - u32 id1 = 0, id2 = 0; + int id1, id2; u32 addr1, addr2; u32 stat; unsigned long flags; - int err; /* *BARF* */ handle2 = NULL; @@ -1026,23 +1025,12 @@ static void push_rxbufs(ns_dev * card, s card->lbfqc += 2; } - do { - if (!idr_pre_get(&card->idr, GFP_ATOMIC)) { - printk(KERN_ERR - "nicstar%d: no free memory for idr\n", - card->index); - goto out; - } - - if (!id1) - err = idr_get_new_above(&card->idr, handle1, 0, &id1); - - if (!id2 && err == 0) - err = idr_get_new_above(&card->idr, handle2, 0, &id2); - - } while (err == -EAGAIN); + id1 = idr_alloc(&card->idr, handle1, 0, 0, GFP_ATOMIC); + if (id1 < 0) + goto out; - if (err) + id2 = idr_alloc(&card->idr, handle2, 0, 0, GFP_ATOMIC); + if (id2 < 0) goto out; spin_lock_irqsave(&card->res_lock, flags); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/