5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Shahar S Matityahu <shahar.s.matityahu@xxxxxxxxx> [ Upstream commit 37733bffda3285d18bd1d72c14b3a1cf39c56a5e ] fw_running assumes that memory can be retrieved only after alive. This assumption is no longer true as we support dump before alive. To avoid invalid access to the NIC, check that STATUS_DEVICE_ENABLED bit in trans status is set before dumping instead of the prior check. Signed-off-by: Shahar S Matityahu <shahar.s.matityahu@xxxxxxxxx> Reviewed-by: Luciano Coelho <luciano.coelho@xxxxxxxxx> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@xxxxxxxxx> Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@xxxxxxxxx> Link: https://msgid.link/20240510170500.ca07138cedeb.I090e31d3eaeb4ba19f5f84aba997ccd36927e9ac@changeid Signed-off-by: Johannes Berg <johannes.berg@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/net/wireless/intel/iwlwifi/fw/debugfs.c | 3 +-- drivers/net/wireless/intel/iwlwifi/fw/runtime.h | 1 - drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 6 ------ 3 files changed, 1 insertion(+), 9 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c index 6419fbfec5ac..6da3934b8e9a 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/fw/debugfs.c @@ -252,8 +252,7 @@ static ssize_t iwl_dbgfs_send_hcmd_write(struct iwl_fw_runtime *fwrt, char *buf, .data = { NULL, }, }; - if (fwrt->ops && fwrt->ops->fw_running && - !fwrt->ops->fw_running(fwrt->ops_ctx)) + if (!iwl_trans_fw_running(fwrt->trans)) return -EIO; if (count < header_size + 1 || count > 1024 * 4) diff --git a/drivers/net/wireless/intel/iwlwifi/fw/runtime.h b/drivers/net/wireless/intel/iwlwifi/fw/runtime.h index 35af85a5430b..297ff92de928 100644 --- a/drivers/net/wireless/intel/iwlwifi/fw/runtime.h +++ b/drivers/net/wireless/intel/iwlwifi/fw/runtime.h @@ -18,7 +18,6 @@ struct iwl_fw_runtime_ops { int (*dump_start)(void *ctx); void (*dump_end)(void *ctx); - bool (*fw_running)(void *ctx); int (*send_hcmd)(void *ctx, struct iwl_host_cmd *host_cmd); bool (*d3_debug_enable)(void *ctx); }; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 01f65c9789e7..0b0022dabc7b 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -653,11 +653,6 @@ static void iwl_mvm_fwrt_dump_end(void *ctx) mutex_unlock(&mvm->mutex); } -static bool iwl_mvm_fwrt_fw_running(void *ctx) -{ - return iwl_mvm_firmware_running(ctx); -} - static int iwl_mvm_fwrt_send_hcmd(void *ctx, struct iwl_host_cmd *host_cmd) { struct iwl_mvm *mvm = (struct iwl_mvm *)ctx; @@ -678,7 +673,6 @@ static bool iwl_mvm_d3_debug_enable(void *ctx) static const struct iwl_fw_runtime_ops iwl_mvm_fwrt_ops = { .dump_start = iwl_mvm_fwrt_dump_start, .dump_end = iwl_mvm_fwrt_dump_end, - .fw_running = iwl_mvm_fwrt_fw_running, .send_hcmd = iwl_mvm_fwrt_send_hcmd, .d3_debug_enable = iwl_mvm_d3_debug_enable, }; -- 2.43.0
