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[Qemu-devel] Re: [PATCH] Fix sparc booting with no CD in drive
From: |
Paul Brook |
Subject: |
[Qemu-devel] Re: [PATCH] Fix sparc booting with no CD in drive |
Date: |
Mon, 14 Aug 2006 16:08:20 +0100 |
User-agent: |
KMail/1.9.3 |
On Sunday 13 August 2006 21:00, Blue Swirl wrote:
> If there is no CD in drive, sparc system emulator fails to boot. This
> happens because error handling is a bit broken in scsi-disk.c. The older
> OpenBIOS just didn't care.
> Index: qemu/hw/scsi-disk.c
> ===================================================================
> --- qemu.orig/hw/scsi-disk.c 2006-08-13 19:44:42.000000000 +0000
> +++ qemu/hw/scsi-disk.c 2006-08-13 19:49:58.000000000 +0000
> @@ -109,8 +109,10 @@
> uint32_t n;
>
> DPRINTF("Read %d (%d/%d)\n", len, s->buf_len, s->sector_count);
> - if (s->buf_len == 0 && s->sector_count == 0)
> + if (s->buf_len == 0 && s->sector_count == 0) {
> + scsi_command_complete(s, SENSE_NO_SENSE);
> return 1;
> + }
>
Why are we getting reads when no data is available? The command should already
have completed.
> @@ -447,6 +449,7 @@
> s->buf_len = 8;
> } else {
> scsi_command_complete(s, SENSE_NOT_READY);
> + return 0;
> }
> break;
> case 0x08:
This bit looks ok.
Paul