linux-kernel - [PATCH] pata_sil680: Only enable MMIO on Cell blades

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:	Wed, 26 Mar 2008 10:50:41 +1100
From:	Benjamin Herrenschmidt <benh@...abs.org>
To:	<jgarzik@...ox.com>
CC:	Linux IDE <linux-ide@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>
Subject: [PATCH] pata_sil680: Only enable MMIO on Cell blades

There have been reported regressions of the SIL 680 driver when
using MMIO, so this makes it only try MMIO on Cell blades where
it's known to be necessary (the host bridge doesn't do PIO on these).

We'll try to find the root problem with MMIO separately.

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
---

 drivers/ata/pata_sil680.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

--- linux-work.orig/drivers/ata/pata_sil680.c	2008-03-26 10:43:20.000000000 +1100
+++ linux-work/drivers/ata/pata_sil680.c	2008-03-26 10:43:34.000000000 +1100
@@ -269,7 +269,11 @@ static u8 sil680_init_chip(struct pci_de
 	dev_dbg(&pdev->dev, "sil680: BA5_EN = %d clock = %02X\n",
 		tmpbyte & 1, tmpbyte & 0x30);
 
-	*try_mmio = (tmpbyte & 1) || pci_resource_start(pdev, 5);
+	*try_mmio = 0;
+#ifdef CONFIG_PPC
+	if (machine_is(cell))
+		*try_mmio = (tmpbyte & 1) || pci_resource_start(pdev, 5);
+#endif
 
 	switch(tmpbyte & 0x30) {
 		case 0x00:
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/