On Thu, Oct 18, 2018 at 2:55 PM Nathan Chancellor <natechancellor@xxxxxxxxx> wrote: > > Clang warns a few times: > > drivers/scsi/3w-sas.c:386:11: warning: implicit conversion from 'int' to > 'char' changes value from 128 to -128 [-Wconstant-conversion] > cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ > ~ ^~~~~~~~~~~~~~~~~~~~ > > Update cdb's type to unsigned char, which matches the type of the cdb > member in struct TW_Command_Apache. > > Link: https://github.com/ClangBuiltLinux/linux/issues/158 > Signed-off-by: Nathan Chancellor <natechancellor@xxxxxxxxx> > --- > drivers/scsi/3w-9xxx.c | 12 ++++++++---- > drivers/scsi/3w-sas.c | 8 +++++--- > 2 files changed, 13 insertions(+), 7 deletions(-) > > diff --git a/drivers/scsi/3w-9xxx.c b/drivers/scsi/3w-9xxx.c > index 05293babb031..2d655a97b959 100644 > --- a/drivers/scsi/3w-9xxx.c > +++ b/drivers/scsi/3w-9xxx.c > @@ -143,7 +143,9 @@ static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int secon > static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal); > static int twa_reset_device_extension(TW_Device_Extension *tw_dev); > static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); > -static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg); > +static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, > + unsigned char *cdb, int use_sg, > + TW_SG_Entry *sglistarg); > static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); > static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); > > @@ -278,7 +280,7 @@ static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id) > static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) > { > int request_id = 0; > - char cdb[TW_MAX_CDB_LEN]; > + unsigned char cdb[TW_MAX_CDB_LEN]; > TW_SG_Entry sglist[1]; > int finished = 0, count = 0; > TW_Command_Full *full_command_packet; > @@ -423,7 +425,7 @@ static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_H > /* This function will read the aen queue from the isr */ > static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) > { > - char cdb[TW_MAX_CDB_LEN]; > + unsigned char cdb[TW_MAX_CDB_LEN]; > TW_SG_Entry sglist[1]; > TW_Command_Full *full_command_packet; > int retval = 1; > @@ -1798,7 +1800,9 @@ static int twa_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_ > static DEF_SCSI_QCMD(twa_scsi_queue) > > /* This function hands scsi cdb's to the firmware */ > -static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg) > +static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, > + unsigned char *cdb, int use_sg, > + TW_SG_Entry *sglistarg) > { > TW_Command_Full *full_command_packet; > TW_Command_Apache *command_packet; > diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c > index 266bdac75304..480cf82700e9 100644 > --- a/drivers/scsi/3w-sas.c > +++ b/drivers/scsi/3w-sas.c > @@ -287,7 +287,9 @@ static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id) > } /* End twl_post_command_packet() */ > > /* This function hands scsi cdb's to the firmware */ > -static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry_ISO *sglistarg) > +static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, > + unsigned char *cdb, int use_sg, > + TW_SG_Entry_ISO *sglistarg) > { > TW_Command_Full *full_command_packet; > TW_Command_Apache *command_packet; > @@ -372,7 +374,7 @@ static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, > /* This function will read the aen queue from the isr */ > static int twl_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) > { > - char cdb[TW_MAX_CDB_LEN]; > + unsigned char cdb[TW_MAX_CDB_LEN]; > TW_SG_Entry_ISO sglist[1]; > TW_Command_Full *full_command_packet; > int retval = 1; > @@ -554,7 +556,7 @@ static int twl_poll_response(TW_Device_Extension *tw_dev, int request_id, int se > static int twl_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) > { > int request_id = 0; > - char cdb[TW_MAX_CDB_LEN]; > + unsigned char cdb[TW_MAX_CDB_LEN]; > TW_SG_Entry_ISO sglist[1]; > int finished = 0, count = 0; > TW_Command_Full *full_command_packet; > -- > 2.19.1 > Looks ok. Acked-by: Adam Radford <aradford@xxxxxxxxx> -Adam
