diff mbox series

[02/12] iwlwifi: yoyo: Avoid using dram data if allocation failed

Message ID iwlwifi.20220204122220.44835d181528.I3e78ba29c13bbeada017fcb2a620f3552c1dfa30@changeid (mailing list archive)
State Accepted
Commit 7404564374001a51af6ec5e2f1663619d2f91918
Delegated to: Luca Coelho
Headers show
Series iwlwifi: updates intended for v5.18 2022-02-04 | expand

Commit Message

Luca Coelho Feb. 4, 2022, 10:25 a.m. UTC 
From: Mukesh Sisodiya <mukesh.sisodiya@intel.com>

The config set TLV setting depend on dram allocation
and if allocation failed the data used in config set tlv
should not set this.
Adding the check if dram fragment is available or not.

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Fixes: 1a5daead217c ("iwlwifi: yoyo: support for ROM usniffer")
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
---
 drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
index 1e884dc31f46..0cda8ac5024f 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-dbg-tlv.c
@@ -875,11 +875,18 @@  static void iwl_dbg_tlv_apply_config(struct iwl_fw_runtime *fwrt,
 		case IWL_FW_INI_CONFIG_SET_TYPE_DBGC_DRAM_ADDR: {
 			struct iwl_dbgc1_info dram_info = {};
 			struct iwl_dram_data *frags = &fwrt->trans->dbg.fw_mon_ini[1].frags[0];
-			__le64 dram_base_addr = cpu_to_le64(frags->physical);
-			__le32 dram_size = cpu_to_le32(frags->size);
-			u64  dram_addr = le64_to_cpu(dram_base_addr);
+			__le64 dram_base_addr;
+			__le32 dram_size;
+			u64 dram_addr;
 			u32 ret;
 
+			if (!frags)
+				break;
+
+			dram_base_addr = cpu_to_le64(frags->physical);
+			dram_size = cpu_to_le32(frags->size);
+			dram_addr = le64_to_cpu(dram_base_addr);
+
 			IWL_DEBUG_FW(fwrt, "WRT: dram_base_addr 0x%016llx, dram_size 0x%x\n",
 				     dram_base_addr, dram_size);
 			IWL_DEBUG_FW(fwrt, "WRT: config_list->addr_offset: %u\n",