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-rw-r--r--drivers/net/wireless/ath/ath5k/debug.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath5k/debug.c b/drivers/net/wireless/ath/ath5k/debug.c
index ebb9c237a0d5..4cccc29964f6 100644
--- a/drivers/net/wireless/ath/ath5k/debug.c
+++ b/drivers/net/wireless/ath/ath5k/debug.c
@@ -239,6 +239,9 @@ static ssize_t read_file_beacon(struct file *file, char __user *user_buf,
"TSF\t\t0x%016llx\tTU: %08x\n",
(unsigned long long)tsf, TSF_TO_TU(tsf));
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
@@ -334,6 +337,9 @@ static ssize_t read_file_debug(struct file *file, char __user *user_buf,
sc->debug.level == dbg_info[i].level ? '+' : ' ',
dbg_info[i].level, dbg_info[i].desc);
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
@@ -433,6 +439,9 @@ static ssize_t read_file_antenna(struct file *file, char __user *user_buf,
len += snprintf(buf+len, sizeof(buf)-len,
"AR5K_PHY_ANT_SWITCH_TABLE_1\t0x%08x\n", v);
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
@@ -542,6 +551,9 @@ static ssize_t read_file_frameerrors(struct file *file, char __user *user_buf,
len += snprintf(buf+len, sizeof(buf)-len, "[TX all\t%d]\n",
st->tx_all_count);
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
@@ -681,6 +693,9 @@ static ssize_t read_file_ani(struct file *file, char __user *user_buf,
ATH5K_ANI_CCK_TRIG_HIGH - (ATH5K_PHYERR_CNT_MAX -
ath5k_hw_reg_read(sc->ah, AR5K_PHYERR_CNT2)));
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}
@@ -766,6 +781,9 @@ static ssize_t read_file_queue(struct file *file, char __user *user_buf,
len += snprintf(buf+len, sizeof(buf)-len, " len: %d\n", n);
}
+ if (len > sizeof(buf))
+ len = sizeof(buf);
+
return simple_read_from_buffer(user_buf, count, ppos, buf, len);
}