Commit e654bc43 authored by Boaz Harrosh's avatar Boaz Harrosh Committed by Jens Axboe
Browse files

[PATCH] fix request->cmd == INT cases 



 - I have unearthed very old bugs in stale drivers that still
   used request->cmd as a READ|WRITE int
 - This patch is maybe a proof that these drivers have not been
   used for a long time. Should they be removed completely?

Drivers that currently do not work for sure:
 drivers/acorn/block/fd1772.c |    2 +-
 drivers/acorn/block/mfmhd.c  |    8 ++++----
 drivers/cdrom/aztcd.c        |    2 +-
 drivers/cdrom/cm206.c        |    2 +-
 drivers/cdrom/gscd.c         |    2 +-
 drivers/cdrom/mcdx.c         |    2 +-
 drivers/cdrom/optcd.c        |    2 +-
 drivers/cdrom/sjcd.c         |    2 +-

Drivers with cosmetic fixes only:
  b/drivers/block/amiflop.c
  b/drivers/block/nbd.c
  b/drivers/ide/legacy/hd.c

Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: default avatarJens Axboe <jens.axboe@oracle.com>
parent 9cff3b38

drivers/acorn/block/fd1772.c

+1 −1
Original line number Diff line number Diff line
@@ -1246,7 +1246,7 @@ repeat: 
	del_timer(&motor_off_timer);



	ReqCnt = 0;

	ReqCmd = CURRENT->cmd;

	ReqCmd = rq_data_dir(CURRENT);

	ReqBlock = CURRENT->sector;

	ReqBuffer = CURRENT->buffer;

	setup_req_params(drive);

drivers/acorn/block/mfmhd.c

+3 −10
Original line number Diff line number Diff line
@@ -439,7 +439,7 @@ static void mfm_rw_intr(void) 
	   a choice of command end or some data which is ready to be collected */

	/* I think we have to transfer data while the interrupt line is on and its

	   not any other type of interrupt */

	if (CURRENT->cmd == WRITE) {

	if (rq_data_dir(CURRENT) == WRITE) {

		extern void hdc63463_writedma(void);

		if ((hdc63463_dataleft <= 0) && (!(mfm_status & STAT_CED))) {

			printk("mfm_rw_intr: Apparent DMA write request when no more to DMA\n");
@@ -799,7 +799,7 @@ static void issue_request(unsigned int block, unsigned int nsect, 
	raw_cmd.head = start_head;

	raw_cmd.cylinder = track / p->heads;

	raw_cmd.cmdtype = CURRENT->cmd;

	raw_cmd.cmdcode = CURRENT->cmd == WRITE ? CMD_WD : CMD_RD;

	raw_cmd.cmdcode = rq_data_dir(CURRENT) == WRITE ? CMD_WD : CMD_RD;

	raw_cmd.cmddata[0] = dev + 1;	/* DAG: +1 to get US */

	raw_cmd.cmddata[1] = raw_cmd.head;

	raw_cmd.cmddata[2] = raw_cmd.cylinder >> 8;
@@ -830,7 +830,7 @@ static void issue_request(unsigned int block, unsigned int nsect, 
	hdc63463_dataleft = nsect * 256;	/* Better way? */



	DBG("mfm%c: %sing: CHS=%d/%d/%d, sectors=%d, buffer=0x%08lx (%p)\n",

	     raw_cmd.dev + 'a', (CURRENT->cmd == READ) ? "read" : "writ",

	     raw_cmd.dev + 'a', rq_data_dir(CURRENT) == READ ? "read" : "writ",

		       raw_cmd.cylinder,

		       raw_cmd.head,

	    raw_cmd.sector, nsect, (unsigned long) Copy_buffer, CURRENT);
@@ -917,13 +917,6 @@ static void mfm_request(void) 


		DBG("mfm_request: block after offset=%d\n", block);



		if (CURRENT->cmd != READ && CURRENT->cmd != WRITE) {

			printk("unknown mfm-command %d\n", CURRENT->cmd);

			end_request(CURRENT, 0);

			Busy = 0;

			printk("mfm: continue 4\n");

			continue;

		}

		issue_request(block, nsect, CURRENT);



		break;

drivers/block/amiflop.c

+1 −1
Original line number Diff line number Diff line
@@ -1363,7 +1363,7 @@ static void redo_fd_request(void) 
#ifdef DEBUG

		printk("fd: sector %ld + %d requested for %s\n",

		       CURRENT->sector,cnt,

		       (CURRENT->cmd==READ)?"read":"write");

		       (rq_data_dir(CURRENT) == READ) ? "read" : "write");

#endif

		block = CURRENT->sector + cnt;

		if ((int)block > floppy->blocks) {

drivers/block/nbd.c

+1 −1
Original line number Diff line number Diff line
@@ -416,7 +416,7 @@ static void nbd_clear_que(struct nbd_device *lo) 
/*

 * We always wait for result of write, for now. It would be nice to make it optional

 * in future

 * if ((req->cmd == WRITE) && (lo->flags & NBD_WRITE_NOCHK)) 

 * if ((rq_data_dir(req) == WRITE) && (lo->flags & NBD_WRITE_NOCHK))

 *   { printk( "Warning: Ignoring result!\n"); nbd_end_request( req ); }

 */

drivers/cdrom/aztcd.c

+1 −1
Original line number Diff line number Diff line
@@ -229,7 +229,7 @@ static struct request_queue *azt_queue; 
static int current_valid(void)

{

        return CURRENT &&

		CURRENT->cmd == READ &&

		rq_data_dir(CURRENT) == READ &&

		CURRENT->sector != -1;

}

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