mac80211: brcmfmac: backport PSM watchdog improvements

Signed-off-by: Rafał Miłecki <rafal@milecki.pl>

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 (file)
index 0000000..ef2e80f
--- /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?= <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;
+ }
+ 

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 (file)
index 0000000..54210df
--- /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?= <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)