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brcm47xx: describe 610-pci_ide_fix.patch

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It was initially commited in r20924.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>

SVN-Revision: 47056
This commit is contained in:
Rafał Miłecki 2015-09-27 06:05:53 +00:00
parent 4e4b4c8cb5
commit 6eadb62f70
1 changed files with 27 additions and 0 deletions
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27
target/linux/brcm47xx/patches-4.1/610-pci_ide_fix.patch
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@ -1,3 +1,30 @@
From: b.sander
Subject: [PATCH] pci: IDE fix
These are standard probing messages when using pdc202xx_old:
pdc202xx_old 0000:00:01.0: IDE controller (0x105a:0x0d30 rev 0x02)
PCI: Enabling device 0000:00:01.0 (0004 -> 0007)
PCI: Fixing up device 0000:00:01.0
0000:00:01.0: (U)DMA Burst Bit DISABLED Primary PCI Mode Secondary PCI Mode.
0000:00:01.0: FORCING BURST BIT 0x00->0x01 ACTIVE
pdc202xx_old 0000:00:01.0: 100% native mode on irq 6
With the default MAX_HWIFS value after above we get:
ide2: BM-DMA at 0x0400-0x0407
ide3: BM-DMA at 0x0408-0x040f
Probing IDE interface ide2...
hde: CF500, CFA DISK drive
As you can see it's ide2 + ide3 and hde.
With this patch applied we get:
ide0: BM-DMA at 0x0400-0x0407
ide1: BM-DMA at 0x0408-0x040f
Probing IDE interface ide0...
hda: CF500, CFA DISK drive
This fixes OpenWrt ticket #7061: https://dev.openwrt.org/ticket/7061
---
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -191,7 +191,11 @@ static inline void ide_std_init_ports(st