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ide-cd: fix 'ireason' handling for REQ_TYPE_ATA_PC requests 

Pass 'struct request *rq' to ide_cd_check_ireason() from cdrom_newpc_intr()
and use ide_cd_check_ireason() also for REQ_TYPE_ATA_PC requests.

This fixes some hangs caused by not finishing the transfer before ending
the request and also makes use of 'ireason == 1' quirk for spurious IRQs.

Tested-by: Brad Rosser <brad.rosser@gmail.com>
Cc: Borislav Petkov <petkovbb@googlemail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-02-26 21:50:35 +01:00
parent 788d669736
commit 9f10d9ee0a
1 changed files with 10 additions and 14 deletions
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22
drivers/ide/ide-cd.c
View File

@ -670,8 +670,8 @@ static void cdrom_buffer_sectors (ide_drive_t *drive, unsigned long sector,
* 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, int len, int ireason, int rw)
static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
int len, int ireason, int rw)
{
/*
* ireason == 0: the drive wants to receive data from us
@ -701,6 +701,9 @@ int ide_cd_check_ireason(ide_drive_t *drive, int len, int ireason, int rw)
drive->name, __FUNCTION__, ireason);
}
if (rq->cmd_type == REQ_TYPE_ATA_PC)
rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
return -1;
}
@ -1071,11 +1074,11 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
/*
* check which way to transfer data
*/
if (blk_fs_request(rq) || blk_pc_request(rq)) {
if (ide_cd_check_ireason(drive, len, ireason, write))
if (ide_cd_check_ireason(drive, rq, len, ireason, write))
return ide_stopped;
if (blk_fs_request(rq) && write == 0) {
if (blk_fs_request(rq)) {
if (write == 0) {
int nskip;
if (ide_cd_check_transfer_size(drive, len)) {
@ -1101,16 +1104,9 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
if (ireason == 0) {
write = 1;
xferfunc = HWIF(drive)->atapi_output_bytes;
} else if (ireason == 2 || (ireason == 1 &&
(blk_fs_request(rq) || blk_pc_request(rq)))) {
} else {
write = 0;
xferfunc = HWIF(drive)->atapi_input_bytes;
} else {
printk(KERN_ERR "%s: %s: The drive "
"appears confused (ireason = 0x%02x). "
"Trying to recover by ending request.\n",
drive->name, __FUNCTION__, ireason);
goto end_request;
}
/*