diff options
Diffstat (limited to 'package/kernel/mac80211/patches/357-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch')
| -rw-r--r-- | package/kernel/mac80211/patches/357-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/357-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch b/package/kernel/mac80211/patches/357-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch new file mode 100644 index 0000000000..b5a957b9b1 --- /dev/null +++ b/package/kernel/mac80211/patches/357-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 +@@ -1065,6 +1065,29 @@ 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, ++}; ++ + int brcmf_bus_started(struct device *dev) + { + int ret = -1; +@@ -1096,6 +1119,8 @@ int brcmf_bus_started(struct device *dev + goto fail; + + brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read); ++ debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr, ++ &bus_reset_fops); + + /* assure we have chipid before feature attach */ + if (!bus_if->chip) { |