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authorBorislav Petkov <petkovbb@gmail.com>2009-04-26 10:39:07 +0200
committerBorislav Petkov <petkovbb@gmail.com>2009-05-15 06:44:45 +0200
commit103f7033bd0f7b65ff3e0a5ea72449d08010b031 (patch)
treebf1e416a235ffde137c94ad1d5da8542b0e5ab4e /drivers/ide/ide-cd.c
parent239f7e25346e22c4a94bde004d845e7397947c01 (diff)
ide: unify interrupt reason checking
Add ide_check_ireason() function that handles all ATAPI devices. Reorganize all unlikely cases in ireason checking further down in the code path. In addition, add PFX for printks originating from ide-atapi. Finally, remove ide_cd_check_ireason. Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Diffstat (limited to 'drivers/ide/ide-cd.c')
-rw-r--r--drivers/ide/ide-cd.c47
1 files changed, 1 insertions, 46 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index dca41ae0d048..d299713bfdc1 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -410,50 +410,6 @@ end_request:
return 2;
}
-/*
- * Check the contents of the interrupt reason register from the cdrom
- * and attempt to recover if there are problems. Returns 0 if everything's
- * ok; nonzero if the request has been terminated.
- */
-static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
- int len, int ireason, int rw)
-{
- ide_hwif_t *hwif = drive->hwif;
-
- ide_debug_log(IDE_DBG_FUNC, "ireason: 0x%x, rw: 0x%x", ireason, rw);
-
- /*
- * ireason == 0: the drive wants to receive data from us
- * ireason == 2: the drive is expecting to transfer data to us
- */
- if (ireason == (!rw << 1))
- return 0;
- else if (ireason == (rw << 1)) {
-
- /* whoops... */
- printk(KERN_ERR PFX "%s: %s: wrong transfer direction!\n",
- drive->name, __func__);
-
- ide_pad_transfer(drive, rw, len);
- } else if (rw == 0 && ireason == 1) {
- /*
- * Some drives (ASUS) seem to tell us that status info is
- * available. Just get it and ignore.
- */
- (void)hwif->tp_ops->read_status(hwif);
- return 0;
- } else {
- /* drive wants a command packet, or invalid ireason... */
- printk(KERN_ERR PFX "%s: %s: bad interrupt reason 0x%02x\n",
- drive->name, __func__, ireason);
- }
-
- if (rq->cmd_type == REQ_TYPE_ATA_PC)
- rq->cmd_flags |= REQ_FAILED;
-
- return -1;
-}
-
static void ide_cd_request_sense_fixup(ide_drive_t *drive, struct ide_cmd *cmd)
{
struct request *rq = cmd->rq;
@@ -645,8 +601,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
goto out_end;
}
- /* check which way to transfer data */
- rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
+ rc = ide_check_ireason(drive, rq, len, ireason, write);
if (rc)
goto out_end;

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