| Message ID | 20220815145740.12075-3-olek2@wp.pl (mailing list archive) |
|---|---|
| State | Superseded |
| Delegated to: | Netdev Maintainers |
| Headers | show |
| Series | net: lantiq_xrx200: fix errors under memory pressure | expand |
| Context | Check | Description |
|---|---|---|
| netdev/tree_selection | success | Clearly marked for net |
| netdev/fixes_present | success | Fixes tag present in non-next series |
| netdev/subject_prefix | success | Link |
| netdev/cover_letter | success | Series has a cover letter |
| netdev/patch_count | success | Link |
| netdev/header_inline | success | No static functions without inline keyword in header files |
| netdev/build_32bit | success | Errors and warnings before: 0 this patch: 0 |
| netdev/cc_maintainers | success | CCed 6 of 6 maintainers |
| netdev/build_clang | success | Errors and warnings before: 0 this patch: 0 |
| netdev/module_param | success | Was 0 now: 0 |
| netdev/verify_signedoff | success | Signed-off-by tag matches author and committer |
| netdev/check_selftest | success | No net selftest shell script |
| netdev/verify_fixes | success | Fixes tag looks correct |
| netdev/build_allmodconfig_warn | success | Errors and warnings before: 0 this patch: 0 |
| netdev/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 8 lines checked |
| netdev/kdoc | success | Errors and warnings before: 0 this patch: 0 |
| netdev/source_inline | success | Was 0 now: 0 |
diff --git a/drivers/net/ethernet/lantiq_xrx200.c b/drivers/net/ethernet/lantiq_xrx200.c index 6a83a6c19484..8f9155eacdb3 100644 --- a/drivers/net/ethernet/lantiq_xrx200.c +++ b/drivers/net/ethernet/lantiq_xrx200.c @@ -295,7 +295,7 @@ static int xrx200_poll_rx(struct napi_struct *napi, int budget) if (ret == XRX200_DMA_PACKET_IN_PROGRESS) continue; if (ret != XRX200_DMA_PACKET_COMPLETE) - return ret; + break; rx++; } else { break;
When the xrx200_hw_receive() function returns -ENOMEM, the NAPI poll function immediately returns an error. This is incorrect for two reasons: * the function terminates without enabling interrupts or scheduling NAPI, * the error code (-ENOMEM) is returned instead of the number of received packets. After the first memory allocation failure occurs, packet reception is locked due to disabled interrupts from DMA.. Fixes: fe1a56420cf2 ("net: lantiq: Add Lantiq / Intel VRX200 Ethernet driver") Signed-off-by: Aleksander Jan Bajkowski <olek2@wp.pl> --- drivers/net/ethernet/lantiq_xrx200.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)