From b3b3c176d9150af542d9ba5e5b292d233883ff85 Mon Sep 17 00:00:00 2001 From: Bruno Randolf Date: Mon, 12 Jul 2010 00:40:38 +0900 Subject: [PATCH] MIPS: MTX-1: cleanup and comments Add some comments about mtx1_pci_idsel() and remove a dead block of old code. Signed-off-by: Bruno Randolf To: linux-mips@linux-mips.org To: manuel.lauss@googlemail.com Cc: florian@openwrt.org Patchwork: https://patchwork.linux-mips.org/patch/1449/ Signed-off-by: Ralf Baechle --- arch/mips/alchemy/mtx-1/board_setup.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/arch/mips/alchemy/mtx-1/board_setup.c b/arch/mips/alchemy/mtx-1/board_setup.c index def1a75d7561..ff3697387b89 100644 --- a/arch/mips/alchemy/mtx-1/board_setup.c +++ b/arch/mips/alchemy/mtx-1/board_setup.c @@ -108,14 +108,10 @@ void __init board_setup(void) int mtx1_pci_idsel(unsigned int devsel, int assert) { -#define MTX_IDSEL_ONLY_0_AND_3 0 -#if MTX_IDSEL_ONLY_0_AND_3 - if (devsel != 0 && devsel != 3) { - printk(KERN_ERR "*** not 0 or 3\n"); - return 0; - } -#endif - + /* This function is only necessary to support a proprietary Cardbus + * adapter on the mtx-1 "singleboard" variant. It triggers a custom + * logic chip connected to EXT_IO3 (GPIO1) to suppress IDSEL signals. + */ if (assert && devsel != 0) /* Suppress signal to Cardbus */ alchemy_gpio_set_value(1, 0); /* set EXT_IO3 OFF */ -- 2.20.1