From 8232736dabd2a0310f76944fa7af0542fe3ded4f Mon Sep 17 00:00:00 2001 From: Sujith Manoharan Date: Tue, 10 Jan 2012 09:54:10 +0530 Subject: ath6kl: Fix listen interval handling This patch addresses a few problems with the commit: "ath6kl: Implement support for listen interval from userspace" * The debugfs file required for reading/writing the listen interval wasn't created. Fix this. * The interface index was being hardcoded to zero. Fix this. * Two separate parameters, "listen_interval_time and listen_interval_beacons" were being used. This fails to work as expected because the FW assigns higher precedence to "listen_interval_beacons" and "listen_interval_time" ends up being never used at all. To handle this, fix the host driver to exclusively use listen interval based on units of beacon intervals. To set the listen interval, a user would now do something like this: echo "10" > /sys/kernel/debug/ieee80211/*/ath6kl/listen_interval kvalo: fix two checkpatch warnings Signed-off-by: Sujith Manoharan Signed-off-by: Kalle Valo --- drivers/net/wireless/ath/ath6kl/debug.c | 44 ++++++++++++++------------------- 1 file changed, 18 insertions(+), 26 deletions(-) (limited to 'drivers/net/wireless/ath/ath6kl/debug.c') diff --git a/drivers/net/wireless/ath/ath6kl/debug.c b/drivers/net/wireless/ath/ath6kl/debug.c index eb808b46f94c..fa7243b41442 100644 --- a/drivers/net/wireless/ath/ath6kl/debug.c +++ b/drivers/net/wireless/ath/ath6kl/debug.c @@ -1505,57 +1505,46 @@ static const struct file_operations fops_bgscan_int = { }; static ssize_t ath6kl_listen_int_write(struct file *file, - const char __user *user_buf, - size_t count, loff_t *ppos) + const char __user *user_buf, + size_t count, loff_t *ppos) { struct ath6kl *ar = file->private_data; - u16 listen_int_t, listen_int_b; + struct ath6kl_vif *vif; + u16 listen_interval; char buf[32]; - char *sptr, *token; ssize_t len; + vif = ath6kl_vif_first(ar); + if (!vif) + return -EIO; + len = min(count, sizeof(buf) - 1); if (copy_from_user(buf, user_buf, len)) return -EFAULT; buf[len] = '\0'; - sptr = buf; - - token = strsep(&sptr, " "); - if (!token) - return -EINVAL; - - if (kstrtou16(token, 0, &listen_int_t)) - return -EINVAL; - - if (kstrtou16(sptr, 0, &listen_int_b)) - return -EINVAL; - - if ((listen_int_t < 15) || (listen_int_t > 5000)) + if (kstrtou16(buf, 0, &listen_interval)) return -EINVAL; - if ((listen_int_b < 1) || (listen_int_b > 50)) + if ((listen_interval < 1) || (listen_interval > 50)) return -EINVAL; - ar->listen_intvl_t = listen_int_t; - ar->listen_intvl_b = listen_int_b; - - ath6kl_wmi_listeninterval_cmd(ar->wmi, 0, ar->listen_intvl_t, + ar->listen_intvl_b = listen_interval; + ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx, 0, ar->listen_intvl_b); return count; } static ssize_t ath6kl_listen_int_read(struct file *file, - char __user *user_buf, - size_t count, loff_t *ppos) + char __user *user_buf, + size_t count, loff_t *ppos) { struct ath6kl *ar = file->private_data; char buf[32]; int len; - len = scnprintf(buf, sizeof(buf), "%u %u\n", ar->listen_intvl_t, - ar->listen_intvl_b); + len = scnprintf(buf, sizeof(buf), "%u\n", ar->listen_intvl_b); return simple_read_from_buffer(user_buf, count, ppos, buf, len); } @@ -1710,6 +1699,9 @@ int ath6kl_debug_init(struct ath6kl *ar) debugfs_create_file("bgscan_interval", S_IWUSR, ar->debugfs_phy, ar, &fops_bgscan_int); + debugfs_create_file("listen_interval", S_IRUSR | S_IWUSR, + ar->debugfs_phy, ar, &fops_listen_int); + debugfs_create_file("power_params", S_IWUSR, ar->debugfs_phy, ar, &fops_power_params); -- cgit v1.2.3