Commit 06a449e3 authored by Bartlomiej Zolnierkiewicz's avatar Bartlomiej Zolnierkiewicz
Browse files

ide-cd: fix non-SECTOR_SIZE-multiples PIO transfers for fs requests 



We now support arbitrary number of bytes per-IRQ also for fs requests
so remove ide_cd_check_transfer_size() and IDE_AFLAG_LIMIT_NFRAMES.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: default avatarBartlomiej Zolnierkiewicz <bzolnier@gmail.com>
parent a08915ba

drivers/ide/ide-cd.c

+1 −35
Original line number Diff line number Diff line
@@ -509,31 +509,6 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq, 
	return -1;

}



/*

 * Assume that the drive will always provide data in multiples of at least

 * SECTOR_SIZE, as it gets hairy to keep track of the transfers otherwise.

 */

static int ide_cd_check_transfer_size(ide_drive_t *drive, int len)

{

	ide_debug_log(IDE_DBG_FUNC, "len: %d", len);



	if ((len % SECTOR_SIZE) == 0)

		return 0;



	printk(KERN_ERR PFX "%s: %s: Bad transfer size %d\n", drive->name,

			__func__, len);



	if (drive->atapi_flags & IDE_AFLAG_LIMIT_NFRAMES)

		printk(KERN_ERR PFX "This drive is not supported by this "

				"version of the driver\n");

	else {

		printk(KERN_ERR PFX "Trying to limit transfer sizes\n");

		drive->atapi_flags |= IDE_AFLAG_LIMIT_NFRAMES;

	}



	return 1;

}



static ide_startstop_t ide_cd_prepare_rw_request(ide_drive_t *drive,

						 struct request *rq)

{
@@ -752,13 +727,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive) 
	if (rc)

		goto out_end;



	if (blk_fs_request(rq)) {

		if (write == 0) {

			if (ide_cd_check_transfer_size(drive, len))

				goto out_end;

		}

	cmd->last_xfer_len = 0;

	}



	if (ireason == 0) {

		write = 1;
@@ -1619,9 +1588,6 @@ static const struct ide_proc_devset *ide_cd_proc_devsets(ide_drive_t *drive) 
#endif



static const struct cd_list_entry ide_cd_quirks_list[] = {

	/* Limit transfer size per interrupt. */

	{ "SAMSUNG CD-ROM SCR-2430", NULL,   IDE_AFLAG_LIMIT_NFRAMES	     },

	{ "SAMSUNG CD-ROM SCR-2432", NULL,   IDE_AFLAG_LIMIT_NFRAMES	     },

	/* SCR-3231 doesn't support the SET_CD_SPEED command. */

	{ "SAMSUNG CD-ROM SCR-3231", NULL,   IDE_AFLAG_NO_SPEED_SELECT	     },

	/* Old NEC260 (not R) was released before ATAPI 1.2 spec. */

include/linux/ide.h

+0 −5
Original line number Diff line number Diff line
@@ -458,11 +458,6 @@ enum { 
	IDE_AFLAG_TOCADDR_AS_BCD	= (1 << 3),

	/* TOC track numbers are in BCD. */

	IDE_AFLAG_TOCTRACKS_AS_BCD	= (1 << 4),

	/*

	 * Drive does not provide data in multiples of SECTOR_SIZE

	 * when more than one interrupt is needed.

	 */

	IDE_AFLAG_LIMIT_NFRAMES		= (1 << 5),

	/* Saved TOC information is current. */

	IDE_AFLAG_TOC_VALID		= (1 << 6),

	/* We think that the drive door is locked. */