From 7393ce8d87d2a06deb231dc1e0ddb46330f9897b Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Mon, 9 Sep 2019 09:37:53 +0200 Subject: mac80211: brcmfmac: backport more kernel 5.4 changes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Patch getting RAM info got upstreamed. A debugging fs entry for testing reset feature was added. Signed-off-by: Rafał Miłecki (cherry picked from commit 681acdcc54d2e59135bb706c38bed942f74ccf74) --- ...add-reset-debugfs-entry-for-testing-reset.patch | 59 ++++++++++++++++++++++ 1 file changed, 59 insertions(+) create mode 100644 package/kernel/mac80211/patches/475-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch (limited to 'package/kernel/mac80211/patches/475-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch') diff --git a/package/kernel/mac80211/patches/475-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch b/package/kernel/mac80211/patches/475-v5.4-0002-brcmfmac-add-reset-debugfs-entry-for-testing-reset.patch new file mode 100644 index 0000000000..30df6766fa --- /dev/null +++ b/package/kernel/mac80211/patches/475-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?= +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 +Signed-off-by: Kalle Valo +--- + .../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 +@@ -1117,6 +1117,29 @@ 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; +@@ -1192,6 +1215,8 @@ 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); + -- cgit v1.2.3