diff mbox

[net-2.6,4/9] sfc: Consistently report short MCDI responses as EIO

Message ID 1272061557.5520.17.camel@achroite.uk.solarflarecom.com
State Changes Requested, archived
Delegated to: David Miller
Headers show

Commit Message

Ben Hutchings April 23, 2010, 10:25 p.m. UTC 
EMSGSIZE means 'Message too large' whereas these are too short.
EINVAL means 'Invalid argument' whereas this is a response.
In some cases failing functions were returning 0 which is obviously wrong.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
---
 drivers/net/sfc/mcdi.c     |   22 ++++++++++++++--------
 drivers/net/sfc/mcdi_phy.c |    6 +++---
 2 files changed, 17 insertions(+), 11 deletions(-)
diff mbox

Patch

diff --git a/drivers/net/sfc/mcdi.c b/drivers/net/sfc/mcdi.c
index c48669c..1344afa 100644
--- a/drivers/net/sfc/mcdi.c
+++ b/drivers/net/sfc/mcdi.c
@@ -613,7 +613,7 @@  int efx_mcdi_fwver(struct efx_nic *efx, u64 *version, u32 *build)
 	}
 
 	if (outlength < MC_CMD_GET_VERSION_V1_OUT_LEN) {
-		rc = -EMSGSIZE;
+		rc = -EIO;
 		goto fail;
 	}
 
@@ -647,8 +647,10 @@  int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,
 			  outbuf, sizeof(outbuf), &outlen);
 	if (rc)
 		goto fail;
-	if (outlen < MC_CMD_DRV_ATTACH_OUT_LEN)
+	if (outlen < MC_CMD_DRV_ATTACH_OUT_LEN) {
+		rc = -EIO;
 		goto fail;
+	}
 
 	if (was_attached != NULL)
 		*was_attached = MCDI_DWORD(outbuf, DRV_ATTACH_OUT_OLD_STATE);
@@ -676,7 +678,7 @@  int efx_mcdi_get_board_cfg(struct efx_nic *efx, u8 *mac_address,
 		goto fail;
 
 	if (outlen < MC_CMD_GET_BOARD_CFG_OUT_LEN) {
-		rc = -EMSGSIZE;
+		rc = -EIO;
 		goto fail;
 	}
 
@@ -738,8 +740,10 @@  int efx_mcdi_nvram_types(struct efx_nic *efx, u32 *nvram_types_out)
 			  outbuf, sizeof(outbuf), &outlen);
 	if (rc)
 		goto fail;
-	if (outlen < MC_CMD_NVRAM_TYPES_OUT_LEN)
+	if (outlen < MC_CMD_NVRAM_TYPES_OUT_LEN) {
+		rc = -EIO;
 		goto fail;
+	}
 
 	*nvram_types_out = MCDI_DWORD(outbuf, NVRAM_TYPES_OUT_TYPES);
 	return 0;
@@ -765,8 +769,10 @@  int efx_mcdi_nvram_info(struct efx_nic *efx, unsigned int type,
 			  outbuf, sizeof(outbuf), &outlen);
 	if (rc)
 		goto fail;
-	if (outlen < MC_CMD_NVRAM_INFO_OUT_LEN)
+	if (outlen < MC_CMD_NVRAM_INFO_OUT_LEN) {
+		rc = -EIO;
 		goto fail;
+	}
 
 	*size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_SIZE);
 	*erase_size_out = MCDI_DWORD(outbuf, NVRAM_INFO_OUT_ERASESIZE);
@@ -968,7 +974,7 @@  static int efx_mcdi_read_assertion(struct efx_nic *efx)
 	if (rc)
 		return rc;
 	if (outlen < MC_CMD_GET_ASSERTS_OUT_LEN)
-		return -EINVAL;
+		return -EIO;
 
 	/* Print out any recorded assertion state */
 	flags = MCDI_DWORD(outbuf, GET_ASSERTS_OUT_GLOBAL_FLAGS);
@@ -1086,7 +1092,7 @@  int efx_mcdi_wol_filter_set(struct efx_nic *efx, u32 type,
 		goto fail;
 
 	if (outlen < MC_CMD_WOL_FILTER_SET_OUT_LEN) {
-		rc = -EMSGSIZE;
+		rc = -EIO;
 		goto fail;
 	}
 
@@ -1121,7 +1127,7 @@  int efx_mcdi_wol_filter_get_magic(struct efx_nic *efx, int *id_out)
 		goto fail;
 
 	if (outlen < MC_CMD_WOL_FILTER_GET_OUT_LEN) {
-		rc = -EMSGSIZE;
+		rc = -EIO;
 		goto fail;
 	}
 
diff --git a/drivers/net/sfc/mcdi_phy.c b/drivers/net/sfc/mcdi_phy.c
index 2f23546..5d34487 100644
--- a/drivers/net/sfc/mcdi_phy.c
+++ b/drivers/net/sfc/mcdi_phy.c
@@ -48,7 +48,7 @@  efx_mcdi_get_phy_cfg(struct efx_nic *efx, struct efx_mcdi_phy_cfg *cfg)
 		goto fail;
 
 	if (outlen < MC_CMD_GET_PHY_CFG_OUT_LEN) {
-		rc = -EMSGSIZE;
+		rc = -EIO;
 		goto fail;
 	}
 
@@ -111,7 +111,7 @@  static int efx_mcdi_loopback_modes(struct efx_nic *efx, u64 *loopback_modes)
 		goto fail;
 
 	if (outlen < MC_CMD_GET_LOOPBACK_MODES_OUT_LEN) {
-		rc = -EMSGSIZE;
+		rc = -EIO;
 		goto fail;
 	}
 
@@ -587,7 +587,7 @@  static int efx_mcdi_phy_test_alive(struct efx_nic *efx)
 		return rc;
 
 	if (outlen < MC_CMD_GET_PHY_STATE_OUT_LEN)
-		return -EMSGSIZE;
+		return -EIO;
 	if (MCDI_DWORD(outbuf, GET_PHY_STATE_STATE) != MC_CMD_PHY_STATE_OK)
 		return -EINVAL;