diff options
| author | David S. Miller <davem@davemloft.net> | 2019-01-27 10:43:17 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-01-27 10:43:17 -0800 |
| commit | 1d68101367a92336e633d0c3681bf8c86644e124 (patch) | |
| tree | 8fdacef561481c25c71641b8fa91a5dfa0ba7f96 /drivers/net/ethernet/sfc | |
| parent | 085c4c7dd2b6558fb079fad07d6e9064f5e0b4c2 (diff) | |
| parent | 1fc7f56db7a7c467e46a5d2e2a009d2f337e0338 (diff) | |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Diffstat (limited to 'drivers/net/ethernet/sfc')
| -rw-r--r-- | drivers/net/ethernet/sfc/ef10.c | 29 |
1 files changed, 21 insertions, 8 deletions
diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c index ee42d4a887d7..6062e99fa69b 100644 --- a/drivers/net/ethernet/sfc/ef10.c +++ b/drivers/net/ethernet/sfc/ef10.c @@ -6047,22 +6047,25 @@ static const struct efx_ef10_nvram_type_info efx_ef10_nvram_types[] = { { NVRAM_PARTITION_TYPE_ROMCONFIG_DEFAULTS, 0, 0, "sfc_exp_rom_cfg_dflt" }, { NVRAM_PARTITION_TYPE_STATUS, 0, 0, "sfc_status" }, }; +#define EF10_NVRAM_PARTITION_COUNT ARRAY_SIZE(efx_ef10_nvram_types) static int efx_ef10_mtd_probe_partition(struct efx_nic *efx, struct efx_mcdi_mtd_partition *part, - unsigned int type) + unsigned int type, + unsigned long *found) { MCDI_DECLARE_BUF(inbuf, MC_CMD_NVRAM_METADATA_IN_LEN); MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_METADATA_OUT_LENMAX); const struct efx_ef10_nvram_type_info *info; size_t size, erase_size, outlen; + int type_idx = 0; bool protected; int rc; - for (info = efx_ef10_nvram_types; ; info++) { - if (info == - efx_ef10_nvram_types + ARRAY_SIZE(efx_ef10_nvram_types)) + for (type_idx = 0; ; type_idx++) { + if (type_idx == EF10_NVRAM_PARTITION_COUNT) return -ENODEV; + info = efx_ef10_nvram_types + type_idx; if ((type & ~info->type_mask) == info->type) break; } @@ -6082,6 +6085,13 @@ static int efx_ef10_mtd_probe_partition(struct efx_nic *efx, /* Protected partitions are read only. */ erase_size = 0; + /* If we've already exposed a partition of this type, hide this + * duplicate. All operations on MTDs are keyed by the type anyway, + * so we can't act on the duplicate. + */ + if (__test_and_set_bit(type_idx, found)) + return -EEXIST; + part->nvram_type = type; MCDI_SET_DWORD(inbuf, NVRAM_METADATA_IN_TYPE, type); @@ -6113,6 +6123,7 @@ static int efx_ef10_mtd_probe_partition(struct efx_nic *efx, static int efx_ef10_mtd_probe(struct efx_nic *efx) { MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX); + DECLARE_BITMAP(found, EF10_NVRAM_PARTITION_COUNT); struct efx_mcdi_mtd_partition *parts; size_t outlen, n_parts_total, i, n_parts; unsigned int type; @@ -6141,11 +6152,13 @@ static int efx_ef10_mtd_probe(struct efx_nic *efx) for (i = 0; i < n_parts_total; i++) { type = MCDI_ARRAY_DWORD(outbuf, NVRAM_PARTITIONS_OUT_TYPE_ID, i); - rc = efx_ef10_mtd_probe_partition(efx, &parts[n_parts], type); - if (rc == 0) - n_parts++; - else if (rc != -ENODEV) + rc = efx_ef10_mtd_probe_partition(efx, &parts[n_parts], type, + found); + if (rc == -EEXIST || rc == -ENODEV) + continue; + if (rc) goto fail; + n_parts++; } rc = efx_mtd_add(efx, &parts[0].common, n_parts, sizeof(*parts)); |