diff options
Diffstat (limited to 'package/kernel/mac80211/patches/rt2x00/065-rt2x00-add-restart-hw.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/rt2x00/065-rt2x00-add-restart-hw.patch | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/rt2x00/065-rt2x00-add-restart-hw.patch b/package/kernel/mac80211/patches/rt2x00/065-rt2x00-add-restart-hw.patch new file mode 100644 index 0000000000..225aed16c4 --- /dev/null +++ b/package/kernel/mac80211/patches/rt2x00/065-rt2x00-add-restart-hw.patch @@ -0,0 +1,151 @@ +From e403fa31ed71e87de8e5991e23406b8377c9c894 Mon Sep 17 00:00:00 2001 +From: Stanislaw Gruszka <sgruszka@redhat.com> +Date: Sat, 15 Jun 2019 12:00:59 +0200 +Subject: [PATCH 06/15] rt2x00: add restart hw + +Add ieee80211_restart_hw() to watchdog and debugfs file for testing +if restart works as expected. + +Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> +Signed-off-by: Kalle Valo <kvalo@codeaurora.org> +--- + .../net/wireless/ralink/rt2x00/rt2800lib.c | 4 +++ + drivers/net/wireless/ralink/rt2x00/rt2x00.h | 7 ++++ + .../net/wireless/ralink/rt2x00/rt2x00debug.c | 35 +++++++++++++++++++ + .../net/wireless/ralink/rt2x00/rt2x00dev.c | 10 ++++-- + 4 files changed, 54 insertions(+), 2 deletions(-) + +--- a/drivers/net/wireless/ralink/rt2x00/rt2800lib.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2800lib.c +@@ -1274,6 +1274,9 @@ void rt2800_watchdog(struct rt2x00_dev * + + if (hung_rx) + rt2x00_warn(rt2x00dev, "Watchdog RX hung detected\n"); ++ ++ if (hung_tx || hung_rx) ++ ieee80211_restart_hw(rt2x00dev->hw); + } + EXPORT_SYMBOL_GPL(rt2800_watchdog); + +@@ -10294,6 +10297,7 @@ int rt2800_probe_hw(struct rt2x00_dev *r + __set_bit(REQUIRE_TASKLET_CONTEXT, &rt2x00dev->cap_flags); + } + ++ __set_bit(CAPABILITY_RESTART_HW, &rt2x00dev->cap_flags); + rt2x00dev->link.watchdog_interval = msecs_to_jiffies(100); + + /* +--- a/drivers/net/wireless/ralink/rt2x00/rt2x00.h ++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00.h +@@ -723,6 +723,7 @@ enum rt2x00_capability_flags { + CAPABILITY_VCO_RECALIBRATION, + CAPABILITY_EXTERNAL_PA_TX0, + CAPABILITY_EXTERNAL_PA_TX1, ++ CAPABILITY_RESTART_HW, + }; + + /* +@@ -1279,6 +1280,12 @@ rt2x00_has_cap_vco_recalibration(struct + return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_VCO_RECALIBRATION); + } + ++static inline bool ++rt2x00_has_cap_restart_hw(struct rt2x00_dev *rt2x00dev) ++{ ++ return rt2x00_has_cap_flag(rt2x00dev, CAPABILITY_RESTART_HW); ++} ++ + /** + * rt2x00queue_map_txskb - Map a skb into DMA for TX purposes. + * @entry: Pointer to &struct queue_entry +--- a/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00debug.c +@@ -63,6 +63,7 @@ struct rt2x00debug_intf { + * - chipset file + * - device state flags file + * - device capability flags file ++ * - hardware restart file + * - register folder + * - csr offset/value files + * - eeprom offset/value files +@@ -79,6 +80,7 @@ struct rt2x00debug_intf { + struct dentry *chipset_entry; + struct dentry *dev_flags; + struct dentry *cap_flags; ++ struct dentry *restart_hw; + struct dentry *register_folder; + struct dentry *csr_off_entry; + struct dentry *csr_val_entry; +@@ -577,6 +579,34 @@ static const struct file_operations rt2x + .llseek = default_llseek, + }; + ++static ssize_t rt2x00debug_write_restart_hw(struct file *file, ++ const char __user *buf, ++ size_t length, ++ loff_t *offset) ++{ ++ struct rt2x00debug_intf *intf = file->private_data; ++ struct rt2x00_dev *rt2x00dev = intf->rt2x00dev; ++ static unsigned long last_reset; ++ ++ if (!rt2x00_has_cap_restart_hw(rt2x00dev)) ++ return -EOPNOTSUPP; ++ ++ if (time_before(jiffies, last_reset + msecs_to_jiffies(2000))) ++ return -EBUSY; ++ ++ last_reset = jiffies; ++ ++ ieee80211_restart_hw(rt2x00dev->hw); ++ return length; ++} ++ ++static const struct file_operations rt2x00debug_restart_hw = { ++ .owner = THIS_MODULE, ++ .write = rt2x00debug_write_restart_hw, ++ .open = simple_open, ++ .llseek = generic_file_llseek, ++}; ++ + static struct dentry *rt2x00debug_create_file_driver(const char *name, + struct rt2x00debug_intf + *intf, +@@ -672,6 +702,10 @@ void rt2x00debug_register(struct rt2x00_ + intf->driver_folder, intf, + &rt2x00debug_fop_cap_flags); + ++ intf->restart_hw = debugfs_create_file("restart_hw", 0200, ++ intf->driver_folder, intf, ++ &rt2x00debug_restart_hw); ++ + intf->register_folder = + debugfs_create_dir("register", intf->driver_folder); + +@@ -753,6 +787,7 @@ void rt2x00debug_deregister(struct rt2x0 + debugfs_remove(intf->csr_off_entry); + debugfs_remove(intf->register_folder); + debugfs_remove(intf->dev_flags); ++ debugfs_remove(intf->restart_hw); + debugfs_remove(intf->cap_flags); + debugfs_remove(intf->chipset_entry); + debugfs_remove(intf->driver_entry); +--- a/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c ++++ b/drivers/net/wireless/ralink/rt2x00/rt2x00dev.c +@@ -1269,8 +1269,14 @@ int rt2x00lib_start(struct rt2x00_dev *r + { + int retval; + +- if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) +- return 0; ++ if (test_bit(DEVICE_STATE_STARTED, &rt2x00dev->flags)) { ++ /* ++ * This is special case for ieee80211_restart_hw(), otherwise ++ * mac80211 never call start() two times in row without stop(); ++ */ ++ rt2x00dev->ops->lib->pre_reset_hw(rt2x00dev); ++ rt2x00lib_stop(rt2x00dev); ++ } + + /* + * If this is the first interface which is added, |