From fe79e683ccdb29c13b3e0d18507474b4e2d9aab6 Mon Sep 17 00:00:00 2001 From: Albert Lee Date: Tue, 6 Dec 2005 11:34:59 +0800 Subject: [PATCH] libata: err_mask misc fix 1. ata_pio_complete(): It seems unnecessary to wait for the clearing of the DRQ bit. (Waiting for BSY=0 should be enough. ata_ok() also checks the correctness of the status bits later.) 2. ata_pio_block(): - added error checking, before transfering data. - minor comments fix Signed-off-by: Albert Lee ============ Signed-off-by: Jeff Garzik --- drivers/scsi/libata-core.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) (limited to 'drivers/scsi') diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c index b3aedb033465..e4c400756b23 100644 --- a/drivers/scsi/libata-core.c +++ b/drivers/scsi/libata-core.c @@ -2865,11 +2865,11 @@ static int ata_pio_complete (struct ata_port *ap) * msecs, then chk-status again. If still busy, fall back to * HSM_ST_POLL state. */ - drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10); - if (drv_stat & (ATA_BUSY | ATA_DRQ)) { + drv_stat = ata_busy_wait(ap, ATA_BUSY, 10); + if (drv_stat & ATA_BUSY) { msleep(2); - drv_stat = ata_busy_wait(ap, ATA_BUSY | ATA_DRQ, 10); - if (drv_stat & (ATA_BUSY | ATA_DRQ)) { + drv_stat = ata_busy_wait(ap, ATA_BUSY, 10); + if (drv_stat & ATA_BUSY) { ap->hsm_task_state = HSM_ST_LAST_POLL; ap->pio_task_timeout = jiffies + ATA_TMOUT_PIO; return 0; @@ -3236,8 +3236,16 @@ static void ata_pio_block(struct ata_port *ap) qc = ata_qc_from_tag(ap, ap->active_tag); assert(qc != NULL); + /* check error */ + if (status & (ATA_ERR | ATA_DF)) { + qc->err_mask |= AC_ERR_DEV; + ap->hsm_task_state = HSM_ST_ERR; + return; + } + + /* transfer data if any */ if (is_atapi_taskfile(&qc->tf)) { - /* no more data to transfer or unsupported ATAPI command */ + /* DRQ=0 means no more data to transfer */ if ((status & ATA_DRQ) == 0) { ap->hsm_task_state = HSM_ST_LAST; return; -- cgit v1.2.2