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Diffstat (limited to 'package/kernel/mac80211/patches/brcm/390-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch')
-rw-r--r--package/kernel/mac80211/patches/brcm/390-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch59
1 files changed, 59 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/brcm/390-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch b/package/kernel/mac80211/patches/brcm/390-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch
new file mode 100644
index 0000000000..b3d01477a6
--- /dev/null
+++ b/package/kernel/mac80211/patches/brcm/390-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch
@@ -0,0 +1,59 @@
+From 2f8c8e62cd50d72ac68de884a09c6f5a969a269c Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
+Date: Sun, 1 Sep 2019 13:34:36 +0200
+Subject: [PATCH] brcmfmac: add "reset" debugfs entry for testing reset
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+This is a trivial debugfs entry for triggering reset just like in case
+of firmware crash. It works by writing 1 to it:
+echo 1 > reset
+
+Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
+Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
+---
+ .../broadcom/brcm80211/brcmfmac/core.c | 25 +++++++++++++++++++
+ 1 file changed, 25 insertions(+)
+
+--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
++++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+@@ -1107,6 +1107,29 @@ static void brcmf_core_bus_reset(struct
+ brcmf_bus_reset(drvr->bus_if);
+ }
+
++static ssize_t bus_reset_write(struct file *file, const char __user *user_buf,
++ size_t count, loff_t *ppos)
++{
++ struct brcmf_pub *drvr = file->private_data;
++ u8 value;
++
++ if (kstrtou8_from_user(user_buf, count, 0, &value))
++ return -EINVAL;
++
++ if (value != 1)
++ return -EINVAL;
++
++ schedule_work(&drvr->bus_reset);
++
++ return count;
++}
++
++static const struct file_operations bus_reset_fops = {
++ .open = simple_open,
++ .llseek = no_llseek,
++ .write = bus_reset_write,
++};
++
+ static int brcmf_bus_started(struct brcmf_pub *drvr, struct cfg80211_ops *ops)
+ {
+ int ret = -1;
+@@ -1182,6 +1205,8 @@ static int brcmf_bus_started(struct brcm
+
+ /* populate debugfs */
+ brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
++ debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr,
++ &bus_reset_fops);
+ brcmf_feat_debugfs_create(drvr);
+ brcmf_proto_debugfs_create(drvr);
+ brcmf_bus_debugfs_create(bus_if);