From 52add1988c63425637ebc8316e1387140cc029fb Mon Sep 17 00:00:00 2001 From: =?utf8?q?Rafa=C5=82=20Mi=C5=82ecki?= Date: Thu, 2 Feb 2017 10:04:57 +0100 Subject: [PATCH] mac80211: brcmfmac: backport PSM watchdog improvements MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Signed-off-by: Rafał Miłecki --- ...rcmf_bus_get_memdump-result-for-erro.patch | 55 +++++++++++++++++++ ...re-verbose-when-PSM-s-watchdog-fires.patch | 41 ++++++++++++++ 2 files changed, 96 insertions(+) create mode 100644 package/kernel/mac80211/patches/365-0001-brcmfmac-check-brcmf_bus_get_memdump-result-for-erro.patch create mode 100644 package/kernel/mac80211/patches/365-0002-brcmfmac-be-more-verbose-when-PSM-s-watchdog-fires.patch diff --git a/package/kernel/mac80211/patches/365-0001-brcmfmac-check-brcmf_bus_get_memdump-result-for-erro.patch b/package/kernel/mac80211/patches/365-0001-brcmfmac-check-brcmf_bus_get_memdump-result-for-erro.patch new file mode 100644 index 0000000000..ef2e80f8a7 --- /dev/null +++ b/package/kernel/mac80211/patches/365-0001-brcmfmac-check-brcmf_bus_get_memdump-result-for-erro.patch @@ -0,0 +1,55 @@ +From f4737a62033d7f3e0db740c449fc62119da7ab8a Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +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 +Acked-by: Arend van Spriel +Signed-off-by: Kalle Valo +--- + .../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; + } + diff --git a/package/kernel/mac80211/patches/365-0002-brcmfmac-be-more-verbose-when-PSM-s-watchdog-fires.patch b/package/kernel/mac80211/patches/365-0002-brcmfmac-be-more-verbose-when-PSM-s-watchdog-fires.patch new file mode 100644 index 0000000000..54210dfe97 --- /dev/null +++ b/package/kernel/mac80211/patches/365-0002-brcmfmac-be-more-verbose-when-PSM-s-watchdog-fires.patch @@ -0,0 +1,41 @@ +From 36401cb7ffae731295a6dd1ce2b40d7ad74245f4 Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= +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 +Acked-by: Arend van Spriel +Signed-off-by: Kalle Valo +--- + 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) -- 2.25.1