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iwlwifi: reduce stack size

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Reduce stack memory footprint of iwlwifi.
(From >1000 bytes for each *_table_read
on i386 down to 32)

Signed-off-by: Frank Seidel <frank@f-seidel.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Frank Seidel
2009-03-01 20:25:38 +01:00
committed by John W. Linville
parent 64abd80330
commit a412c8040d
2 changed files with 28 additions and 6 deletions
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11
drivers/net/wireless/iwlwifi/iwl-3945-rs.c
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@@ -846,11 +846,16 @@ static ssize_t iwl3945_sta_dbgfs_stats_table_read(struct file *file,
char __user *user_buf,
size_t count, loff_t *ppos)
{
char buff[1024];
char *buff;
int desc = 0;
int j;
ssize_t ret;
struct iwl3945_rs_sta *lq_sta = file->private_data;
buff = kmalloc(1024, GFP_KERNEL);
if (!buff)
return -ENOMEM;
desc += sprintf(buff + desc, "tx packets=%d last rate index=%d\n"
"rate=0x%X flush time %d\n",
lq_sta->tx_packets,
@@ -863,7 +868,9 @@ static ssize_t iwl3945_sta_dbgfs_stats_table_read(struct file *file,
lq_sta->win[j].success_counter,
lq_sta->win[j].success_ratio);
}
return simple_read_from_buffer(user_buf, count, ppos, buff, desc);
ret = simple_read_from_buffer(user_buf, count, ppos, buff, desc);
kfree(buff);
return ret;
}
static const struct file_operations rs_sta_dbgfs_stats_table_ops = {