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iwlwifi: pcie: make FH debugfs file code easier to understand 

The code seems fine, as buf won't be assigned when an error
is returned, but checking for the error first is easier to
understand.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Johannes Berg 2014-01-21 21:19:18 +01:00 committed by Emmanuel Grumbach
parent 189fa2faac
commit 56c2477f23
1 changed files with 8 additions and 9 deletions
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15
drivers/net/wireless/iwlwifi/pcie/trans.c
View File

@ -1434,16 +1434,15 @@ static ssize_t iwl_dbgfs_fh_reg_read(struct file *file,
{
struct iwl_trans *trans = file->private_data;
char *buf = NULL;
int pos = 0;
ssize_t ret = -EFAULT;
ssize_t ret;
ret = pos = iwl_dump_fh(trans, &buf);
if (buf) {
ret = simple_read_from_buffer(user_buf,
count, ppos, buf, pos);
ret = iwl_dump_fh(trans, &buf);
if (ret < 0)
return ret;
if (!buf)
return -EINVAL;
ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
kfree(buf);
}
return ret;
}