#include <linux/export.h>
#include <linux/moduleparam.h>
+#include <linux/vmalloc.h>
#include <linux/seq_file.h>
#include <linux/list.h>
struct ath5k_hw *ah = file->private_data;
char buf[20];
- if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+ count = min_t(size_t, count, sizeof(buf) - 1);
+ if (copy_from_user(buf, userbuf, count))
return -EFAULT;
+ buf[count] = '\0';
if (strncmp(buf, "disable", 7) == 0) {
AR5K_REG_DISABLE_BITS(ah, AR5K_BEACON, AR5K_BEACON_ENABLE);
pr_info("debugfs disable beacons\n");
unsigned int i;
char buf[20];
- if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+ count = min_t(size_t, count, sizeof(buf) - 1);
+ if (copy_from_user(buf, userbuf, count))
return -EFAULT;
+ buf[count] = '\0';
for (i = 0; i < ARRAY_SIZE(dbg_info); i++) {
if (strncmp(buf, dbg_info[i].name,
strlen(dbg_info[i].name)) == 0) {
unsigned int i;
char buf[20];
- if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+ count = min_t(size_t, count, sizeof(buf) - 1);
+ if (copy_from_user(buf, userbuf, count))
return -EFAULT;
+ buf[count] = '\0';
if (strncmp(buf, "diversity", 9) == 0) {
ath5k_hw_set_antenna_mode(ah, AR5K_ANTMODE_DEFAULT);
pr_info("debug: enable diversity\n");
struct ath5k_statistics *st = &ah->stats;
char buf[20];
- if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+ count = min_t(size_t, count, sizeof(buf) - 1);
+ if (copy_from_user(buf, userbuf, count))
return -EFAULT;
+ buf[count] = '\0';
if (strncmp(buf, "clear", 5) == 0) {
st->rxerr_crc = 0;
st->rxerr_phy = 0;
struct ath5k_hw *ah = file->private_data;
char buf[20];
- if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+ count = min_t(size_t, count, sizeof(buf) - 1);
+ if (copy_from_user(buf, userbuf, count))
return -EFAULT;
+ buf[count] = '\0';
if (strncmp(buf, "sens-low", 8) == 0) {
ath5k_ani_init(ah, ATH5K_ANI_MODE_MANUAL_HIGH);
} else if (strncmp(buf, "sens-high", 9) == 0) {
struct ath5k_hw *ah = file->private_data;
char buf[20];
- if (copy_from_user(buf, userbuf, min(count, sizeof(buf))))
+ count = min_t(size_t, count, sizeof(buf) - 1);
+ if (copy_from_user(buf, userbuf, count))
return -EFAULT;
+ buf[count] = '\0';
if (strncmp(buf, "start", 5) == 0)
ieee80211_wake_queues(ah->hw);
else if (strncmp(buf, "stop", 4) == 0)
.llseek = default_llseek,
};
+/* debugfs: eeprom */
+
+struct eeprom_private {
+ u16 *buf;
+ int len;
+};
+
+static int open_file_eeprom(struct inode *inode, struct file *file)
+{
+ struct eeprom_private *ep;
+ struct ath5k_hw *ah = inode->i_private;
+ bool res;
+ int i, ret;
+ u32 eesize;
+ u16 val, *buf;
+
+ /* Get eeprom size */
+
+ res = ath5k_hw_nvram_read(ah, AR5K_EEPROM_SIZE_UPPER, &val);
+ if (!res)
+ return -EACCES;
+
+ if (val == 0) {
+ eesize = AR5K_EEPROM_INFO_MAX + AR5K_EEPROM_INFO_BASE;
+ } else {
+ eesize = (val & AR5K_EEPROM_SIZE_UPPER_MASK) <<
+ AR5K_EEPROM_SIZE_ENDLOC_SHIFT;
+ ath5k_hw_nvram_read(ah, AR5K_EEPROM_SIZE_LOWER, &val);
+ eesize = eesize | val;
+ }
+
+ if (eesize > 4096)
+ return -EINVAL;
+
+ /* Create buffer and read in eeprom */
+
+ buf = vmalloc(eesize);
+ if (!buf) {
+ ret = -ENOMEM;
+ goto err;
+ }
+
+ for (i = 0; i < eesize; ++i) {
+ AR5K_EEPROM_READ(i, val);
+ buf[i] = val;
+ }
+
+ /* Create private struct and assign to file */
+
+ ep = kmalloc(sizeof(*ep), GFP_KERNEL);
+ if (!ep) {
+ ret = -ENOMEM;
+ goto freebuf;
+ }
+
+ ep->buf = buf;
+ ep->len = i;
+
+ file->private_data = (void *)ep;
+
+ return 0;
+
+freebuf:
+ vfree(buf);
+err:
+ return ret;
+
+}
+
+static ssize_t read_file_eeprom(struct file *file, char __user *user_buf,
+ size_t count, loff_t *ppos)
+{
+ struct eeprom_private *ep = file->private_data;
+
+ return simple_read_from_buffer(user_buf, count, ppos, ep->buf, ep->len);
+}
+
+static int release_file_eeprom(struct inode *inode, struct file *file)
+{
+ struct eeprom_private *ep = file->private_data;
+
+ vfree(ep->buf);
+ kfree(ep);
+
+ return 0;
+}
+
+static const struct file_operations fops_eeprom = {
+ .open = open_file_eeprom,
+ .read = read_file_eeprom,
+ .release = release_file_eeprom,
+ .owner = THIS_MODULE,
+};
+
void
ath5k_debug_init_device(struct ath5k_hw *ah)
debugfs_create_file("misc", S_IRUSR, phydir, ah, &fops_misc);
+ debugfs_create_file("eeprom", S_IRUSR, phydir, ah, &fops_eeprom);
+
debugfs_create_file("frameerrors", S_IWUSR | S_IRUSR, phydir, ah,
&fops_frameerrors);