Re: PROBLEM: (libata) cdrom drive not detected in -mm series

[Tejun Heo]

Nelson A. de Oliveira wrote:
> Hi!
>
> My USB CD-ROM drive (that is detected as a SCSI drive) is not being
> detected on the -mm series of the Kernel.

s/USB/SATA/, I presume.

[--snip--]
-ata2.00: ATAPI, max UDMA/33
-ata2.00: configured for UDMA/33
-  Vendor: HL-DT-ST  Model: CDRW/DVD GCC4244  Rev: B101
-  Type:   CD-ROM                             ANSI SCSI revision: 05

Argh... yet another PCS problem.  With whole -mm applied, does adding 
kernel parameter 'ata_piix.force_pcs=1' make any difference?

Please provide the following info.

* the result of 'lspci -nvvv'

* dmesg output with the attached patch applied (on top of -mm).

Thanks.

--
tejun
diff --git a/drivers/ata/ata_piix.c b/drivers/ata/ata_piix.c
index 22b2dba..53a19fd 100644
--- a/drivers/ata/ata_piix.c
+++ b/drivers/ata/ata_piix.c
@@ -560,7 +560,7 @@ static unsigned int piix_sata_present_ma
 	u16 pcs;
 
 	pci_read_config_word(pdev, ICH5_PCS, &pcs);
-	DPRINTK("ata%u: ENTER, pcs=0x%x base=%d\n", ap->id, pcs, base);
+	printk(KERN_INFO "ata%u: ENTER, pcs=0x%x base=%d\n", ap->id, pcs, base);
 
 	for (i = 0; i < 2; i++) {
 		port = map[base + i];
@@ -571,7 +571,7 @@ static unsigned int piix_sata_present_ma
 			present_mask |= 1 << i;
 	}
 
-	DPRINTK("ata%u: LEAVE, pcs=0x%x present_mask=0x%x\n",
+	printk(KERN_INFO "ata%u: LEAVE, pcs=0x%x present_mask=0x%x\n",
 		ap->id, pcs, present_mask);
 
 	return present_mask;