60 lines
1.7 KiB
Diff
60 lines
1.7 KiB
Diff
From 2f8c8e62cd50d72ac68de884a09c6f5a969a269c Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
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Date: Sun, 1 Sep 2019 13:34:36 +0200
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Subject: [PATCH] brcmfmac: add "reset" debugfs entry for testing reset
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This is a trivial debugfs entry for triggering reset just like in case
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of firmware crash. It works by writing 1 to it:
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echo 1 > reset
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Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
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Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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---
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.../broadcom/brcm80211/brcmfmac/core.c | 25 +++++++++++++++++++
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1 file changed, 25 insertions(+)
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--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
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@@ -1065,6 +1065,29 @@ static void brcmf_core_bus_reset(struct
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brcmf_bus_reset(drvr->bus_if);
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}
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+static ssize_t bus_reset_write(struct file *file, const char __user *user_buf,
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+ size_t count, loff_t *ppos)
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+{
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+ struct brcmf_pub *drvr = file->private_data;
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+ u8 value;
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+
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+ if (kstrtou8_from_user(user_buf, count, 0, &value))
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+ return -EINVAL;
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+
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+ if (value != 1)
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+ return -EINVAL;
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+
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+ schedule_work(&drvr->bus_reset);
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+
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+ return count;
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+}
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+
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+static const struct file_operations bus_reset_fops = {
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+ .open = simple_open,
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+ .llseek = no_llseek,
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+ .write = bus_reset_write,
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+};
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+
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int brcmf_bus_started(struct device *dev)
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{
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int ret = -1;
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@@ -1096,6 +1119,8 @@ int brcmf_bus_started(struct device *dev
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goto fail;
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brcmf_debugfs_add_entry(drvr, "revinfo", brcmf_revinfo_read);
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+ debugfs_create_file("reset", 0600, brcmf_debugfs_get_devdir(drvr), drvr,
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+ &bus_reset_fops);
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/* assure we have chipid before feature attach */
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if (!bus_if->chip) {
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