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| author |   Arnd Bergmann <arnd@arndb.de> | 2019-06-28 12:31:44 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-06-28 09:30:05 -0700 |
| commit | f7110b753b77b0639d831ad822aad557b2cf000e (patch) | |
| tree | beae441aae49f686ad9b70d6a584ec679e1668bc /drivers/net/ethernet | |
| parent | Merge branch 'stmmac-10GbE-using-XGMAC' (diff) | |
| download | linux-dev-f7110b753b77b0639d831ad822aad557b2cf000e.tar.xz linux-dev-f7110b753b77b0639d831ad822aad557b2cf000e.zip | |
hinic: reduce rss_init stack usage
On 32-bit architectures, putting an array of 256 u32 values on the
stack uses more space than the warning limit:
drivers/net/ethernet/huawei/hinic/hinic_main.c: In function 'hinic_rss_init':
drivers/net/ethernet/huawei/hinic/hinic_main.c:286:1: error: the frame size of 1068 bytes is larger than 1024 bytes [-Werror=frame-larger-than=]
I considered changing the code to use u8 values here, since that's
all the hardware supports, but dynamically allocating the array is
a more isolated fix here.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/huawei/hinic/hinic_main.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/drivers/net/ethernet/huawei/hinic/hinic_main.c b/drivers/net/ethernet/huawei/hinic/hinic_main.c index 1b917543feac..ceb0e247f52d 100644 --- a/drivers/net/ethernet/huawei/hinic/hinic_main.c +++ b/drivers/net/ethernet/huawei/hinic/hinic_main.c @@ -256,37 +256,43 @@ static int hinic_configure_max_qnum(struct hinic_dev *nic_dev) static int hinic_rss_init(struct hinic_dev *nic_dev) { - u32 indir_tbl[HINIC_RSS_INDIR_SIZE] = { 0 }; u8 default_rss_key[HINIC_RSS_KEY_SIZE]; u8 tmpl_idx = nic_dev->rss_tmpl_idx; + u32 *indir_tbl; int err, i; + indir_tbl = kcalloc(HINIC_RSS_INDIR_SIZE, sizeof(u32), GFP_KERNEL); + if (!indir_tbl) + return -ENOMEM; + netdev_rss_key_fill(default_rss_key, sizeof(default_rss_key)); for (i = 0; i < HINIC_RSS_INDIR_SIZE; i++) indir_tbl[i] = ethtool_rxfh_indir_default(i, nic_dev->num_rss); err = hinic_rss_set_template_tbl(nic_dev, tmpl_idx, default_rss_key); if (err) - return err; + goto out; err = hinic_rss_set_indir_tbl(nic_dev, tmpl_idx, indir_tbl); if (err) - return err; + goto out; err = hinic_set_rss_type(nic_dev, tmpl_idx, nic_dev->rss_type); if (err) - return err; + goto out; err = hinic_rss_set_hash_engine(nic_dev, tmpl_idx, nic_dev->rss_hash_engine); if (err) - return err; + goto out; err = hinic_rss_cfg(nic_dev, 1, tmpl_idx); if (err) - return err; + goto out; - return 0; +out: + kfree(indir_tbl); + return err; } static void hinic_rss_deinit(struct hinic_dev *nic_dev) |