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mac80211: brcmfmac: backport PSM watchdog improvements 

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
owl
Rafał Miłecki 2017-02-02 10:04:57 +01:00
parent 4491979dc9
commit 99d3774a3c
2 changed files with 96 additions and 0 deletions
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55
package/kernel/mac80211/patches/365-0001-brcmfmac-check-brcmf_bus_get_memdump-result-for-erro.patch Normal file
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@ -0,0 +1,55 @@
From f4737a62033d7f3e0db740c449fc62119da7ab8a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Mon, 30 Jan 2017 16:09:51 +0100
Subject: [PATCH] brcmfmac: check brcmf_bus_get_memdump result for error
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
This method may be unsupported (see: USB bus) or may just fail (see:
SDIO bus).
While at it rework logic in brcmf_sdio_bus_get_memdump function to avoid
too many conditional code nesting levels.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
.../wireless/broadcom/brcm80211/brcmfmac/debug.c | 23 +++++++++++++++-------
1 file changed, 16 insertions(+), 7 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
@@ -32,16 +32,25 @@ static int brcmf_debug_create_memdump(st
{
void *dump;
size_t ramsize;
+ int err;
ramsize = brcmf_bus_get_ramsize(bus);
- if (ramsize) {
- dump = vzalloc(len + ramsize);
- if (!dump)
- return -ENOMEM;
- memcpy(dump, data, len);
- brcmf_bus_get_memdump(bus, dump + len, ramsize);
- dev_coredumpv(bus->dev, dump, len + ramsize, GFP_KERNEL);
+ if (!ramsize)
+ return -ENOTSUPP;
+
+ dump = vzalloc(len + ramsize);
+ if (!dump)
+ return -ENOMEM;
+
+ memcpy(dump, data, len);
+ err = brcmf_bus_get_memdump(bus, dump + len, ramsize);
+ if (err) {
+ vfree(dump);
+ return err;
}
+
+ dev_coredumpv(bus->dev, dump, len + ramsize, GFP_KERNEL);
+
return 0;
}

41
package/kernel/mac80211/patches/365-0002-brcmfmac-be-more-verbose-when-PSM-s-watchdog-fires.patch Normal file
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@ -0,0 +1,41 @@
From 36401cb7ffae731295a6dd1ce2b40d7ad74245f4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl>
Date: Mon, 30 Jan 2017 16:09:52 +0100
Subject: [PATCH] brcmfmac: be more verbose when PSM's watchdog fires
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
It's important to inform user so he knows things went wrong. He may also
want to get memory dump for further debugging purposes.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/debug.c
@@ -58,10 +58,18 @@ static int brcmf_debug_psm_watchdog_noti
const struct brcmf_event_msg *evtmsg,
void *data)
{
+ int err;
+
brcmf_dbg(TRACE, "enter: bsscfgidx=%d\n", ifp->bsscfgidx);
- return brcmf_debug_create_memdump(ifp->drvr->bus_if, data,
- evtmsg->datalen);
+ brcmf_err("PSM's watchdog has fired!\n");
+
+ err = brcmf_debug_create_memdump(ifp->drvr->bus_if, data,
+ evtmsg->datalen);
+ if (err)
+ brcmf_err("Failed to get memory dump, %d\n", err);
+
+ return err;
}
void brcmf_debugfs_init(void)