[PATCH 13/19] iwlwifi: mvm: don't send CTDP commands via debugfs if not supported

[Luca Coelho]

From: Matt Chen <matt.c...@intel.com>

Fix this issue if it is not supported by the firmware.

Fixes: 00f481bd895a ("iwlwifi: mvm: add ctdp operations to debugfs")
Signed-off-by: Matt Chen <matt.c...@intel.com>
Signed-off-by: Luca Coelho <luciano.coe...@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c 
b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
index 0b5cae54b86b..ceb486610a56 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs.c
@@ -82,6 +82,9 @@ static ssize_t iwl_dbgfs_ctdp_budget_read(struct file *file,
        char buf[16];
        int pos, budget;
 
+       if (!iwl_mvm_is_ctdp_supported(mvm))
+               return -EOPNOTSUPP;
+
        if (!iwl_mvm_firmware_running(mvm) ||
            mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
                return -EIO;
@@ -103,6 +106,9 @@ static ssize_t iwl_dbgfs_stop_ctdp_write(struct iwl_mvm 
*mvm, char *buf,
 {
        int ret;
 
+       if (!iwl_mvm_is_ctdp_supported(mvm))
+               return -EOPNOTSUPP;
+
        if (!iwl_mvm_firmware_running(mvm) ||
            mvm->fwrt.cur_fw_img != IWL_UCODE_REGULAR)
                return -EIO;
-- 
2.13.2