@@ -2249,12 +2249,9 @@ typedef struct _MPI2_SAS_IO_UNIT1_PHY_DATA {
*pMpi2SasIOUnit1PhyData_t;
/*
- *Host code (drivers, BIOS, utilities, etc.) should leave this define set to
- *one and check the value returned for NumPhys at runtime.
+ *Host code (drivers, BIOS, utilities, etc.) should check the value returned
+ *for NumPhys at runtime before using PhyData[].
*/
-#ifndef MPI2_SAS_IOUNIT1_PHY_MAX
-#define MPI2_SAS_IOUNIT1_PHY_MAX (1)
-#endif
typedef struct _MPI2_CONFIG_PAGE_SASIOUNIT_1 {
MPI2_CONFIG_EXTENDED_PAGE_HEADER Header; /*0x00 */
@@ -2275,7 +2272,7 @@ typedef struct _MPI2_CONFIG_PAGE_SASIOUNIT_1 {
U8
IODeviceMissingDelay; /*0x13 */
MPI2_SAS_IO_UNIT1_PHY_DATA
- PhyData[MPI2_SAS_IOUNIT1_PHY_MAX]; /*0x14 */
+ PhyData[]; /*0x14 */
} MPI2_CONFIG_PAGE_SASIOUNIT_1,
*PTR_MPI2_CONFIG_PAGE_SASIOUNIT_1,
Mpi2SasIOUnitPage1_t, *pMpi2SasIOUnitPage1_t;
This terminal 1-length variable array can be directly converted into a C99 flexible array member. As all users of MPI2_CONFIG_PAGE_SASIOUNIT_1 (Mpi2SasIOUnitPage1_t) either calculate its size without depending on its sizeof() or do not use PhyData[], no further source changes are required: - mpt3sas_config.c:mpt3sas_config_get_sas_iounit_pg1() fetches a Mpi2SasIOUnitPage1_t into a caller-provided buffer, and may fetch and write PhyData[] into that buffer depending on its sz argument. Its callers: - mpt3sas_base.c:_base_assign_fw_reported_qd() passes sizeof(Mpi2SasIOUnitPage1_t) as sz, but does not use PhyData[]. - mpt3sas_base.c:mpt3sas_base_update_missing_delay(), mpt3sas_scsih.c:_scsih_sas_host_add(), mpt3sas_transport.c:_transport_phy_enable(), and mpt3sas_transport.c:_transport_phy_speed() all calculate sz independently of sizeof(Mpi2SasIOUnitPage1_t) and allocate a suitable buffer before calling mpt3sas_config_get_sas_iounit_pg1() and using PhyData[]. - mpt3sas_config.c:mpt3sas_config_set_sas_iounit_pg1() writes the contents of a caller-provided buffer to the adapter, with the size of the write depending on its sz argument. Its callers: - mpt3sas_base.c:mpt3sas_base_update_missing_delay(), mpt3sas_transport.c:_transport_phy_enable(), and mpt3sas_transport.c:_transport_phy_speed() have all previously called mpt3sas_config_get_sas_iounit_pg1() to obtain a Mpi2SasIOUnitPage1_t, and are merely writing back this same struct with the same previously calculated sz. Signed-off-by: James Seo <james@equiv.tech> --- drivers/scsi/mpt3sas/mpi/mpi2_cnfg.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-)