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>
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 022a029..1495fe7 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -670,8 +670,8 @@
* 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 @@
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 @@
/*
* check which way to transfer data
*/
- if (blk_fs_request(rq) || blk_pc_request(rq)) {
- if (ide_cd_check_ireason(drive, len, ireason, write))
- return ide_stopped;
+ 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 @@
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;
}
/*
