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| author | Tejun Heo <tj@kernel.org> | 2009-04-19 00:00:41 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2009-04-19 00:00:41 +0200 |
| commit | 1873b90cdea038715ec7140fccc2116fb930ffb5 (patch) | |
| tree | 3431a3c61937ca8db8d535394bec57bb846c4de5 /drivers/ide | |
| parent | ide kill unused ide_cmd->special (diff) | |
| download | linux-1873b90cdea038715ec7140fccc2116fb930ffb5.tar.xz linux-1873b90cdea038715ec7140fccc2116fb930ffb5.zip | |
ide-cd: clear sense buffer before issuing request sense
Impact: code simplification
ide_cd_request_sense_fixup() clears the tail of the sense buffer if
the device didn't completely fill it. This patch makes
cdrom_queue_request_sense() clear the sense buffer before issuing the
command instead of clearing it afterwards. This simplifies code and
eases future changes.
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/ide')
| -rw-r--r-- | drivers/ide/ide-cd.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 3aec19d1fdfc..509f1293cae2 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -217,6 +217,8 @@ static void cdrom_queue_request_sense(ide_drive_t *drive, void *sense, if (sense == NULL) sense = &info->sense_data; + memset(sense, 0, 18); + /* stuff the sense request in front of our current request */ blk_rq_init(NULL, rq); rq->cmd_type = REQ_TYPE_ATA_PC; @@ -504,14 +506,8 @@ static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd) * and some drives don't send them. Sigh. */ if (rq->cmd[0] == GPCMD_REQUEST_SENSE && - cmd->nleft > 0 && cmd->nleft <= 5) { - unsigned int ofs = cmd->nbytes - cmd->nleft; - - while (cmd->nleft > 0) { - *((u8 *)rq->data + ofs++) = 0; - cmd->nleft--; - } - } + cmd->nleft > 0 && cmd->nleft <= 5) + cmd->nleft = 0; } int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd, |