| Message ID | 1631464489-8046-2-git-send-email-michael.chan@broadcom.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | eca4cf12acda306f851f6d2a05b1c9ef62cf0e81 |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | bnxt_en: Bug fixes. | expand |
| Context | Check | Description |
|---|---|---|
| netdev/cover_letter | success | Link |
| netdev/fixes_present | success | Link |
| netdev/patch_count | success | Link |
| netdev/tree_selection | success | Clearly marked for net |
| netdev/subject_prefix | success | Link |
| netdev/cc_maintainers | success | CCed 3 of 3 maintainers |
| netdev/source_inline | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Link |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/build_32bit | success | Errors and warnings before: 2 this patch: 0 |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/verify_fixes | success | Link |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 26 lines checked |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 2 this patch: 0 |
| netdev/header_inline | success | Link |
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c index 9b86516e59a1..8b0a2ae1367c 100644 --- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c +++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c @@ -2213,12 +2213,11 @@ static int bnxt_async_event_process(struct bnxt *bp, DIV_ROUND_UP(fw_health->polling_dsecs * HZ, bp->current_interval * 10); fw_health->tmr_counter = fw_health->tmr_multiplier; - if (!fw_health->enabled) { + if (!fw_health->enabled) fw_health->last_fw_heartbeat = bnxt_fw_health_readl(bp, BNXT_FW_HEARTBEAT_REG); - fw_health->last_fw_reset_cnt = - bnxt_fw_health_readl(bp, BNXT_FW_RESET_CNT_REG); - } + fw_health->last_fw_reset_cnt = + bnxt_fw_health_readl(bp, BNXT_FW_RESET_CNT_REG); netif_info(bp, drv, bp->dev, "Error recovery info: error recovery[1], master[%d], reset count[%u], health status: 0x%x\n", fw_health->master, fw_health->last_fw_reset_cnt, @@ -12207,6 +12206,11 @@ static void bnxt_fw_reset_task(struct work_struct *work) return; } + if ((bp->fw_cap & BNXT_FW_CAP_ERROR_RECOVERY) && + bp->fw_health->enabled) { + bp->fw_health->last_fw_reset_cnt = + bnxt_fw_health_readl(bp, BNXT_FW_RESET_CNT_REG); + } bp->fw_reset_state = 0; /* Make sure fw_reset_state is 0 before clearing the flag */ smp_mb__before_atomic();
The recent patch has introduced a regression by not reading the reset count in the ERROR_RECOVERY async event handler. We may have just gone through a reset and the reset count has just incremented. If we don't update the reset count in the ERROR_RECOVERY event handler, the health check timer will see that the reset count has changed and will initiate an unintended reset. Restore the unconditional update of the reset count in bnxt_async_event_process() if error recovery watchdog is enabled. Also, update the reset count at the end of the reset sequence to make it even more robust. Fixes: 1b2b91831983 ("bnxt_en: Fix possible unintended driver initiated error recovery") Reviewed-by: Edwin Peer <edwin.peer@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> --- drivers/net/ethernet/broadcom/bnxt/bnxt.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)