From: Xinming Hu Date: Tue, 23 Dec 2014 13:44:10 +0000 (+0530) Subject: mwifiex: save driver information to file when firmware dump X-Git-Tag: fixes-v4.0-rc1~150^2~130^2~115 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=11cd07a9694cbd4d06361d6f46b735a47daa9a77;p=pandora-kernel.git mwifiex: save driver information to file when firmware dump This patch adds support to dump driver information to a file when firmware dump happens. This information can be used to root casue FW crash. Signed-off-by: Xinming Hu Signed-off-by: Cathy Luo Signed-off-by: Avinash Patil Signed-off-by: Kalle Valo --- diff --git a/drivers/net/wireless/mwifiex/ethtool.c b/drivers/net/wireless/mwifiex/ethtool.c index 04e56b5fc535..65d8d6d4b6ba 100644 --- a/drivers/net/wireless/mwifiex/ethtool.c +++ b/drivers/net/wireless/mwifiex/ethtool.c @@ -76,7 +76,9 @@ mwifiex_get_dump_flag(struct net_device *dev, struct ethtool_dump *dump) dump->flag = adapter->curr_mem_idx; dump->version = 1; - if (adapter->curr_mem_idx != MWIFIEX_FW_DUMP_IDX) { + if (adapter->curr_mem_idx == MWIFIEX_DRV_INFO_IDX) { + dump->len = adapter->drv_info_size; + } else if (adapter->curr_mem_idx != MWIFIEX_FW_DUMP_IDX) { entry = &adapter->mem_type_mapping_tbl[adapter->curr_mem_idx]; dump->len = entry->mem_size; } else { @@ -98,6 +100,13 @@ mwifiex_get_dump_data(struct net_device *dev, struct ethtool_dump *dump, if (!adapter->if_ops.fw_dump) return -ENOTSUPP; + if (adapter->curr_mem_idx == MWIFIEX_DRV_INFO_IDX) { + if (!adapter->drv_info_dump) + return -EFAULT; + memcpy(p, adapter->drv_info_dump, adapter->drv_info_size); + return 0; + } + if (adapter->curr_mem_idx == MWIFIEX_FW_DUMP_IDX) { dev_err(adapter->dev, "firmware dump in progress!!\n"); return -EBUSY; @@ -125,6 +134,11 @@ static int mwifiex_set_dump(struct net_device *dev, struct ethtool_dump *val) if (!adapter->if_ops.fw_dump) return -ENOTSUPP; + if (val->flag == MWIFIEX_DRV_INFO_IDX) { + adapter->curr_mem_idx = MWIFIEX_DRV_INFO_IDX; + return 0; + } + if (adapter->curr_mem_idx == MWIFIEX_FW_DUMP_IDX) { dev_err(adapter->dev, "firmware dump in progress!!\n"); return -EBUSY; Reading git-diff-tree failed