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Date: Tue, 5 Nov 2002 00:38:31 +0100
To: Jens Axboe <axboe@suse.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Cdrom broken in bk current?
Message-ID: <20021104233831.GA510@gouv>
References: <20021103080514.GC748@gouv> <20021103094306.GK3612@suse.de>
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From: Leopold Gouverneur <lgouv@pi.be>
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On Sun, Nov 03, 2002 at 10:43:06AM +0100, Jens Axboe wrote:
> On Sun, Nov 03 2002, Leopold Gouverneur wrote:
> > I see the following during booting:
> > ...
> > end_request: I/O error, dev hdc, sector 0
> > hdc: ATAPI 40X CD-ROM CD-R/RW drive, 2048kB Cache, DMA
> > Uniform CD-ROM driver Revision: 3.12
> > end_request: I/O error, dev hdc, sector 0
> > end_request: I/O error, dev hdd, sector 0
> > end_request: I/O error, dev hdd, sector 0
> > hdd: ATAPI 16X CD-ROM drive, 256kB Cache, DMA
> > ...
> > 
> > If I mount /dev/hd[cd], the system freezes completly.
> > 
> > This was not present in 2.5.42 IRC
> > ny help?
> 
> Try with this patch.
> 
> -- 
> Jens Axboe
> 

> ===== drivers/ide/ide-cd.c 1.27 vs edited =====
> --- 1.27/drivers/ide/ide-cd.c	Fri Oct 18 20:02:55 2002
> +++ edited/drivers/ide/ide-cd.c	Sun Nov  3 10:33:17 2002
> @@ -310,6 +310,7 @@
>  #include <linux/completion.h>
>  
>  #include <scsi/scsi.h>	/* For SCSI -> ATAPI command conversion */
> +#include "../scsi/scsi.h"
>  
>  #include <asm/irq.h>
>  #include <asm/io.h>
> @@ -877,10 +878,10 @@
>  					  ide_handler_t *handler)
>  {
>  	unsigned char *cmd_buf	= rq->cmd;
> -	int cmd_len		= sizeof(rq->cmd);
>  	unsigned int timeout	= rq->timeout;
>  	struct cdrom_info *info = drive->driver_data;
>  	ide_startstop_t startstop;
> +	unsigned int cmd_len;
>  
>  	if (CDROM_CONFIG_FLAGS(drive)->drq_interrupt) {
>  		/* Here we should have been called after receiving an interrupt
> @@ -902,6 +903,11 @@
>  
>  	/* Arm the interrupt handler. */
>  	ide_set_handler(drive, handler, timeout, cdrom_timer_expiry);
> +
> +	/* cdb length, pad upto the 12th byte if necessary */
> +	cmd_len = COMMAND_SIZE(rq->cmd[0]);
> +	if (cmd_len < 12)
> +		cmd_len = 12;
>  
>  	/* Send the command to the device. */
>  	HWIF(drive)->atapi_output_bytes(drive, cmd_buf, cmd_len);

I tried your patch without success. The problem is still there in 2.5.46

-
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