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| author | Ben Hutchings <bhutchings@solarflare.com> | 2012-09-11 21:46:41 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-03-28 12:11:54 -0700 |
| commit | 4d64cdba19f7c0d4c7fa15671b2817cfc5ebc643 (patch) | |
| tree | 710d63c4996e9df3fd95f95544ce90b3707e697b /drivers | |
| parent | 9a17de12d2b4c4c9cb5b1414fade61f8e9561625 (diff) | |
| download | lwn-4d64cdba19f7c0d4c7fa15671b2817cfc5ebc643.tar.gz lwn-4d64cdba19f7c0d4c7fa15671b2817cfc5ebc643.zip | |
sfc: Fix MCDI structure field lookup
[ Upstream commit 0a6e5008a9df678b48f8d4e57601aa4270df6c14 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/sfc/mcdi.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/net/ethernet/sfc/mcdi.h b/drivers/net/ethernet/sfc/mcdi.h index 0bdf3e331832..96f43d2179cd 100644 --- a/drivers/net/ethernet/sfc/mcdi.h +++ b/drivers/net/ethernet/sfc/mcdi.h @@ -107,11 +107,13 @@ extern void efx_mcdi_sensor_event(struct efx_nic *efx, efx_qword_t *ev); #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, |