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iwlwifi: mvm: dump Rx FIFO when the firmware asserts

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The Rx FIFO includes valuable data - dump it when the FW
asserts. Also - free the SRAM and Rx FIFO when we create
the file, and don't collect new SRAM / Rx FIFO if the
previous file hasn't been collected through debugfs yet.

Also - add a comment to saying that the ASSERT output should
not be modified since we have automatic scripts that monitor
this output.

Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
This commit is contained in:
Emmanuel Grumbach
2014-03-20 11:08:19 +02:00
parent fa1a91fd76
commit 7b445f3501
6 changed files with 78 additions and 8 deletions
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3
drivers/net/wireless/iwlwifi/mvm/debugfs.c
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@@ -136,9 +136,6 @@ static int iwl_dbgfs_fw_error_dump_open(struct inode *inode, struct file *file)
file->private_data = mvm->fw_error_dump;
mvm->fw_error_dump = NULL;
kfree(mvm->fw_error_sram);
mvm->fw_error_sram = NULL;
mvm->fw_error_sram_len = 0;
ret = 0;
out: