Add 'rw' parameter to cdrom_read_check_ireason(), make it handle
both read and write checking, rename it to ide_cd_check_ireason(),
finally remove no longer needed cdrom_write_check_ireason().
There should be no functionality changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
-61 bytes
drivers/ide/ide-cd.c | 64 +++++++++++----------------------------------------
1 file changed, 15 insertions(+), 49 deletions(-)
Index: b/drivers/ide/ide-cd.c
===================================================================
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -683,21 +683,25 @@ static void cdrom_buffer_sectors (ide_dr
* ok; nonzero if the request has been terminated.
*/
static
-int cdrom_read_check_ireason (ide_drive_t *drive, int len, int ireason)
+int ide_cd_check_ireason(ide_drive_t *drive, int len, int ireason, int rw)
{
- if (ireason == 2)
+ /*
+ * 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 == 0) {
+ else if (ireason == (rw << 1)) {
ide_hwif_t *hwif = drive->hwif;
+ xfer_func_t *xf;
- /* Whoops... The drive is expecting to receive data from us! */
+ /* Whoops... */
printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
drive->name, __FUNCTION__);
- /* Throw some data at the drive so it doesn't hang
- and quit this request. */
- ide_cd_pad_transfer(drive, hwif->atapi_output_bytes, len);
- } else if (ireason == 1) {
+ xf = rw ? hwif->atapi_output_bytes : hwif->atapi_input_bytes;
+ ide_cd_pad_transfer(drive, xf, len);
+ } else if (rw == 0 && ireason == 1) {
/* Some drives (ASUS) seem to tell us that status
* info is available. just get it and ignore.
*/
@@ -984,35 +988,6 @@ int ide_cd_queue_pc(ide_drive_t *drive,
return (rq->cmd_flags & REQ_FAILED) ? -EIO : 0;
}
-/*
- * Write handling
- */
-static int cdrom_write_check_ireason(ide_drive_t *drive, int len, int ireason)
-{
- /* Two notes about IDE interrupt reason here - 0 means that
- * the drive wants to receive data from us, 2 means that
- * the drive is expecting to transfer data to us.
- */
- if (ireason == 0)
- return 0;
- else if (ireason == 2) {
- ide_hwif_t *hwif = drive->hwif;
-
- /* Whoops... The drive wants to send data. */
- printk(KERN_ERR "%s: %s: wrong transfer direction!\n",
- drive->name, __FUNCTION__);
-
- ide_cd_pad_transfer(drive, hwif->atapi_input_bytes, len);
- } else {
- /* Drive wants a command packet, or invalid ireason... */
- printk(KERN_ERR "%s: %s: bad interrupt reason 0x%02x\n",
- drive->name, __FUNCTION__, ireason);
- }
-
- cdrom_end_request(drive, 0);
- return 1;
-}
-
static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
{
struct cdrom_info *info = drive->driver_data;
@@ -1100,20 +1075,11 @@ static ide_startstop_t cdrom_newpc_intr(
/*
* check which way to transfer data
*/
- if ((blk_fs_request(rq) || blk_pc_request(rq)) && write) {
- /*
- * write to drive
- */
- if (cdrom_write_check_ireason(drive, len, ireason))
- return ide_stopped;
- } else if (blk_fs_request(rq) || blk_pc_request(rq)) {
- /*
- * read from drive
- */
- if (cdrom_read_check_ireason(drive, len, ireason))
+ if (blk_fs_request(rq) || blk_pc_request(rq)) {
+ if (ide_cd_check_ireason(drive, len, ireason, write))
return ide_stopped;
- if (blk_fs_request(rq)) {
+ if (blk_fs_request(rq) && write == 0) {
int nskip;
if (ide_cd_check_transfer_size(drive, len)) {
-
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