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 @@ -236,7 +236,11 @@ static inline void ide_std_init_ports(st hw->io_ports.ctl_addr = ctl_addr; } +#if defined CONFIG_BCM47XX +# define MAX_HWIFS 2 +#else #define MAX_HWIFS 10 +#endif /* * Now for the data we need to maintain per-drive: ide_drive_t