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Subject[PATCH net-next] wireless: test sscanf return values
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At some point, it'd be good to make sscanf use __must_check
so make sure the net/ uses of sscanf use the return value.

Signed-off-by: Joe Perches <joe@perches.com>
---

Compiled, untested.

net/mac80211/debugfs.c | 4 ++--
net/wireless/core.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/mac80211/debugfs.c b/net/mac80211/debugfs.c
index eeb0bbd..0e44be7 100644
--- a/net/mac80211/debugfs.c
+++ b/net/mac80211/debugfs.c
@@ -160,9 +160,9 @@ static ssize_t sta_tx_latency_stat_write(struct file *file,
tx_latency->n_ranges = n_ranges;
for (i = 0; i < n_ranges; i++) { /* setting bin ranges */
token = strsep(&bins, TX_LATENCY_BIN_DELIMTER_S);
- sscanf(token, "%d", &tx_latency->ranges[i]);
/* bins values should be in ascending order */
- if (prev_bin >= tx_latency->ranges[i]) {
+ if (sscanf(token, "%d", &tx_latency->ranges[i]) != 1 ||
+ prev_bin >= tx_latency->ranges[i]) {
ret = -EINVAL;
kfree(tx_latency);
goto unlock;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 3af0ecf..69a350e 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -95,8 +95,8 @@ static int cfg80211_dev_check_name(struct cfg80211_registered_device *rdev,
ASSERT_RTNL();

/* prohibit calling the thing phy%d when %d is not its number */
- sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken);
- if (taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) {
+ if (sscanf(newname, PHY_NAME "%d%n", &wiphy_idx, &taken) == 1 &&
+ taken == strlen(newname) && wiphy_idx != rdev->wiphy_idx) {
/* count number of places needed to print wiphy_idx */
digits = 1;
while (wiphy_idx /= 10)



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