* PATCH: Old IDE, fix SATA detection for cabling
@ 2006-06-26 13:42 Alan Cox
0 siblings, 0 replies; only message in thread
From: Alan Cox @ 2006-06-26 13:42 UTC (permalink / raw)
To: akpm, linux-ide, linux-kernel
This is based on the proposed patches flying around but also checks that
the device in question is new enough to have word 93 rather thanb
blindly assuming word 93 == 0 means SATA (see ATA-5, ATA-7)
Signed-off-by: Alan Cox <alan@redhat.com>
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.17/drivers/ide/ide-iops.c linux-2.6.17/drivers/ide/ide-iops.c
--- linux.vanilla-2.6.17/drivers/ide/ide-iops.c 2006-06-19 17:17:24.000000000 +0100
+++ linux-2.6.17/drivers/ide/ide-iops.c 2006-06-26 14:04:52.101408544 +0100
@@ -597,6 +597,10 @@
{
if(HWIF(drive)->udma_four == 0)
return 0;
+
+ /* Check for SATA but only if we are ATA5 or higher */
+ if (drive->id->hw_config == 0 && (drive->id->major_rev_num & 0x7FE0))
+ return 1;
if (!(drive->id->hw_config & 0x6000))
return 0;
#ifndef CONFIG_IDEDMA_IVB
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