iwmc3200wifi: Add a last_fw_err debugfs entry

In order to check what was the last fw error we got accross resets, we add
this debugfs entry. It displays the complete ASSERT information.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/drivers/net/wireless/iwmc3200wifi/rx.c b/drivers/net/wireless/iwmc3200wifi/rx.c
index 14950b147f91..40dbcbc16593 100644
--- a/drivers/net/wireless/iwmc3200wifi/rx.c
+++ b/drivers/net/wireless/iwmc3200wifi/rx.c
@@ -102,6 +102,8 @@ static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
         error = (struct iwm_umac_notif_error *)buf;
         fw_err = &error->err;
 
+        memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
+
         IWM_ERR(iwm, "%cMAC FW ERROR:\n",
          (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
         IWM_ERR(iwm, "\tCategory:    %d\n", le32_to_cpu(fw_err->category));