From 9ead725bef42c23ff10958392b219acc0b432505 Mon Sep 17 00:00:00 2001
From: Ashwin <ashwin.bhat@broadcom.com>
Date: Tue, 18 Aug 2015 17:27:51 -0700
Subject: [PATCH] net: wireless: bcmdhd: Fix crash when trying to get FW
memdump
Crash will be seen if we try to get FW memdump when bus is down.
Bug 23190001
Change-Id: I7f77419555e66e7973c7097703d47a2dcf24205f
Signed-off-by: Ashwin <ashwin.bhat@broadcom.com>
---
drivers/net/wireless/bcmdhd/dhd_linux.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/wireless/bcmdhd/dhd_linux.c b/drivers/net/wireless/bcmdhd/dhd_linux.c
index 23978f458775..4b57190af945 100644
--- a/drivers/net/wireless/bcmdhd/dhd_linux.c
+++ b/drivers/net/wireless/bcmdhd/dhd_linux.c
@@ -9882,6 +9882,10 @@ int dhd_os_socram_dump(struct net_device *dev, uint32 *dump_size)
int ret = BCME_OK;
dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);
dhd_pub_t *dhdp = &dhd->pub;
+
+ if (dhdp->busstate == DHD_BUS_DOWN) {
+ return BCME_ERROR;
+ }
ret = dhd_common_socram_dump(dhdp);
if (ret == BCME_OK) {
*dump_size = dhdp->soc_ram_length;
--
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