torvalds/linux
3
0
Fork 0
mirror of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-03-21 23:16:50 +08:00
Code Issues Packages Projects Releases Wiki Activity

ata: libata-scsi: Refactor ata_scsiop_maint_in()

Browse Source 
Move the check for MI_REPORT_SUPPORTED_OPERATION_CODES from
ata_scsi_simulate() into ata_scsiop_maint_in() to simplify
ata_scsi_simulate() code.

Furthermore, since an rbuff fill actor function returning a non-zero
value causes no data to be returned for the command, directly return
an error (return 1) for invalid command formt after setting the invalid
field in cdb error.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Link: https://lore.kernel.org/r/20241022024537.251905-4-dlemoal@kernel.org
Signed-off-by: Niklas Cassel <cassel@kernel.org>
This commit is contained in:
Damien Le Moal
2024-10-22 11:45:34 +09:00
committed by Niklas Cassel
parent 44bdde151a
commit 4ab7bb9763
1 changed files with 11 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
drivers/ata/libata-scsi.c
View File

@@ -3388,12 +3388,16 @@ static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf)
struct ata_device *dev = args->dev;
u8 *cdb = args->cmd->cmnd;
u8 supported = 0, cdlp = 0, rwcdlp = 0;
unsigned int err = 0;
if ((cdb[1] & 0x1f) != MI_REPORT_SUPPORTED_OPERATION_CODES) {
ata_scsi_set_invalid_field(dev, args->cmd, 1, 0xff);
return 1;
}
if (cdb[2] != 1 && cdb[2] != 3) {
ata_dev_warn(dev, "invalid command format %d\n", cdb[2]);
err = 2;
goto out;
ata_scsi_set_invalid_field(dev, args->cmd, 1, 0xff);
return 1;
}
switch (cdb[3]) {
@@ -3461,11 +3465,12 @@ static unsigned int ata_scsiop_maint_in(struct ata_scsi_args *args, u8 *rbuf)
default:
break;
}
out:
/* One command format */
rbuf[0] = rwcdlp;
rbuf[1] = cdlp | supported;
return err;
return 0;
}
/**
@@ -4377,10 +4382,7 @@ void ata_scsi_simulate(struct ata_device *dev, struct scsi_cmnd *cmd)
break;
case MAINTENANCE_IN:
if ((scsicmd[1] & 0x1f) == MI_REPORT_SUPPORTED_OPERATION_CODES)
ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in);
else
ata_scsi_set_invalid_field(dev, cmd, 1, 0xff);
ata_scsi_rbuf_fill(&args, ata_scsiop_maint_in);
break;
/* all other commands */