diff options
Diffstat (limited to 'package/kernel/mac80211/patches/mwl/941-mwl8k-Fix-rate_idx-underflow.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/mwl/941-mwl8k-Fix-rate_idx-underflow.patch | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/package/kernel/mac80211/patches/mwl/941-mwl8k-Fix-rate_idx-underflow.patch b/package/kernel/mac80211/patches/mwl/941-mwl8k-Fix-rate_idx-underflow.patch deleted file mode 100644 index d034dcf51f..0000000000 --- a/package/kernel/mac80211/patches/mwl/941-mwl8k-Fix-rate_idx-underflow.patch +++ /dev/null @@ -1,75 +0,0 @@ -From b897577af85bb5e5638efa780bc3716fae5212d3 Mon Sep 17 00:00:00 2001 -From: =?UTF-8?q?Petr=20=C5=A0tetiar?= <ynezz@true.cz> -Date: Mon, 8 Apr 2019 09:45:56 +0200 -Subject: [PATCH] mwl8k: Fix rate_idx underflow -MIME-Version: 1.0 -Content-Type: text/plain; charset=UTF-8 -Content-Transfer-Encoding: 8bit - -It was reported on OpenWrt bug tracking system[1], that several users -are affected by the endless reboot of their routers if they configure -5GHz interface with channel 44 or 48. - -The reboot loop is caused by the following excessive number of WARN_ON -messages: - - WARNING: CPU: 0 PID: 0 at backports-4.19.23-1/net/mac80211/rx.c:4516 - ieee80211_rx_napi+0x1fc/0xa54 [mac80211] - -as the messages are being correctly emitted by the following guard: - - case RX_ENC_LEGACY: - if (WARN_ON(status->rate_idx >= sband->n_bitrates)) - -as the rate_idx is in this case erroneously set to 251 (0xfb). This fix -simply converts previously used magic number to proper constant and -guards against substraction which is leading to the currently observed -underflow. - -1. https://bugs.openwrt.org/index.php?do=details&task_id=2218 - -Fixes: 854783444bab ("mwl8k: properly set receive status rate index on 5 GHz receive") -Cc: <stable@vger.kernel.org> -Tested-by: Eubert Bao <bunnier@gmail.com> -Reported-by: Eubert Bao <bunnier@gmail.com> -Signed-off-by: Petr Štetiar <ynezz@true.cz> ---- - drivers/net/wireless/marvell/mwl8k.c | 13 +++++++++---- - 1 file changed, 9 insertions(+), 4 deletions(-) - ---- a/drivers/net/wireless/marvell/mwl8k.c -+++ b/drivers/net/wireless/marvell/mwl8k.c -@@ -441,6 +441,9 @@ static const struct ieee80211_rate mwl8k - #define MWL8K_CMD_UPDATE_STADB 0x1123 - #define MWL8K_CMD_BASTREAM 0x1125 - -+#define MWL8K_LEGACY_5G_RATE_OFFSET \ -+ (ARRAY_SIZE(mwl8k_rates_24) - ARRAY_SIZE(mwl8k_rates_50)) -+ - static const char *mwl8k_cmd_name(__le16 cmd, char *buf, int bufsize) - { - u16 command = le16_to_cpu(cmd); -@@ -1016,8 +1019,9 @@ mwl8k_rxd_ap_process(void *_rxd, struct - - if (rxd->channel > 14) { - status->band = NL80211_BAND_5GHZ; -- if (!(status->encoding == RX_ENC_HT)) -- status->rate_idx -= 5; -+ if (!(status->encoding == RX_ENC_HT) && -+ status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) -+ status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; - } else { - status->band = NL80211_BAND_2GHZ; - } -@@ -1124,8 +1128,9 @@ mwl8k_rxd_sta_process(void *_rxd, struct - - if (rxd->channel > 14) { - status->band = NL80211_BAND_5GHZ; -- if (!(status->encoding == RX_ENC_HT)) -- status->rate_idx -= 5; -+ if (!(status->encoding == RX_ENC_HT) && -+ status->rate_idx >= MWL8K_LEGACY_5G_RATE_OFFSET) -+ status->rate_idx -= MWL8K_LEGACY_5G_RATE_OFFSET; - } else { - status->band = NL80211_BAND_2GHZ; - } |