sfc: Fix MCDI structure field lookup
The least significant bit number (LBN) of a field within an MCDI
structure is counted from the start of the structure, not the
containing dword. In MCDI_ARRAY_FIELD() we need to mask it rather
than using the usual EFX_DWORD_FIELD() macro.
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h
index dc25caa..3ba2e5b 100644
--- a/drivers/net/ethernet/sfc/mcdi.h
+++ b/drivers/net/ethernet/sfc/mcdi.h
@@ -113,11 +113,13 @@
#define MCDI_EVENT_FIELD(_ev, _field) \
EFX_QWORD_FIELD(_ev, MCDI_EVENT_ ## _field)
#define MCDI_ARRAY_FIELD(_buf, _field1, _type, _index, _field2) \
- EFX_DWORD_FIELD( \
+ EFX_EXTRACT_DWORD( \
*((efx_dword_t *) \
(MCDI_ARRAY_PTR(_buf, _field1, _type, _index) + \
(MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _OFST & ~3))), \
- MC_CMD_ ## _type ## _TYPEDEF_ ## _field2)
+ MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _LBN & 0x1f, \
+ (MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _LBN & 0x1f) + \
+ MC_CMD_ ## _type ## _TYPEDEF_ ## _field2 ## _WIDTH - 1)
extern void efx_mcdi_print_fwver(struct efx_nic *efx, char *buf, size_t len);
extern int efx_mcdi_drv_attach(struct efx_nic *efx, bool driver_operating,