diff mbox series

[3/3] brcmfmac: dump dongle memory when attaching failed

Message ID 20220929031001.9962-4-ian.lin@infineon.com
State New
Headers show
Series brcmfmac: PCIE debug mechanism series | expand

Commit Message

Ian Lin Sept. 29, 2022, 3:10 a.m. UTC 
From: Wright Feng <wright.feng@cypress.com>

To enhance FW debugging, we add dongle memory dump when hitting attaching
failure with PCIE bus. It can help developer to get more information
about dongle trap reason and root cause.

Signed-off-by: Wright Feng <wright.feng@cypress.com>
Signed-off-by: Chi-hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Ian Lin <ian.lin@infineon.com>
---
 .../net/wireless/broadcom/brcm80211/brcmfmac/core.c    |  3 ++-
 .../net/wireless/broadcom/brcm80211/brcmfmac/pcie.c    | 10 +++++++---
 2 files changed, 9 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
index 595ae3ae561e..d354f79fd0ac 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/core.c
@@ -1399,7 +1399,8 @@  void brcmf_fw_crashed(struct device *dev)
 
 	brcmf_dev_coredump(dev);
 
-	schedule_work(&drvr->bus_reset);
+	if (drvr->bus_reset.func)
+		schedule_work(&drvr->bus_reset);
 }
 
 void brcmf_detach(struct device *dev)
diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
index 1becd50038ab..cf564adc612a 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/pcie.c
@@ -2068,13 +2068,14 @@  static void brcmf_pcie_setup(struct device *dev, int ret,
 	struct brcmf_commonring **flowrings;
 	u32 i, nvram_len;
 
+	bus = dev_get_drvdata(dev);
+	pcie_bus_dev = bus->bus_priv.pcie;
+	devinfo = pcie_bus_dev->devinfo;
+
 	/* check firmware loading result */
 	if (ret)
 		goto fail;
 
-	bus = dev_get_drvdata(dev);
-	pcie_bus_dev = bus->bus_priv.pcie;
-	devinfo = pcie_bus_dev->devinfo;
 	brcmf_pcie_attach(devinfo);
 
 	fw = fwreq->items[BRCMF_PCIE_FW_CODE].binary;
@@ -2148,6 +2149,9 @@  static void brcmf_pcie_setup(struct device *dev, int ret,
 	return;
 
 fail:
+	brcmf_err(bus, "Dongle setup failed\n");
+	brcmf_pcie_bus_console_read(devinfo, true);
+	brcmf_fw_crashed(dev);
 	device_release_driver(dev);
 }