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Date: Wed, 21 Mar 2007 21:56:31 +0900
From: Paul Mundt <lethal@...ux-sh.org>
To: "Wu, Bryan" <bryan.wu@...log.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Arnd Bergmann <arnd@...db.de>,
bert hubert <bert.hubert@...herlabs.nl>,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH -mm 1/4] Blackfin: architecture update patch
On Wed, Mar 21, 2007 at 06:06:58PM +0800, Wu, Bryan wrote:
> +++ linux-2.6/arch/blackfin/Kconfig 2007-03-21 14:38:42.000000000 +0800
> @@ -21,6 +21,10 @@ config RWSEM_XCHGADD_ALGORITHM
> bool
> default n
>
> +config BLACKFIN
> + bool
> + default y
> +
> config BFIN
> bool
> default y
Again, there's no reason to have both of these. Pick one and stick with
it.
> diff -purN linux-2.6-orig/arch/blackfin/kernel/flat.c linux-2.6/arch/blackfin/kernel/flat.c
> --- linux-2.6-orig/arch/blackfin/kernel/flat.c 1970-01-01 08:00:00.000000000 +0800
> +++ linux-2.6/arch/blackfin/kernel/flat.c 2007-03-21 14:43:37.000000000 +0800
[snip]
> + switch (type) {
> + case FLAT_BFIN_RELOC_TYPE_16_BIT:
> + case FLAT_BFIN_RELOC_TYPE_16H_BIT:
> + usptr = (unsigned short *)ptr;
> +#ifdef DEBUG_BFIN_RELOC
> + pr_info(" *usptr = %x", get_unaligned(usptr));
> +#endif
> + val = get_unaligned(usptr);
The debugging here looks broken, just use pr_debug() and DEBUG as normal,
then you can kill off this DEBUG_BFIN_RELOC thing.
> @@ -346,3 +351,46 @@ unsigned long get_wchan(struct task_stru
> while (count++ < 16);
> return 0;
> }
> +
> +#if !defined(CONFIG_NO_ACCESS_CHECK)
> +int _access_ok(unsigned long addr, unsigned long size)
You may want to change this to CONFIG_ACCESS_CHECK instead, it's a bit
more intuitive than checking ! CONFIG_NO_ACCESS_CHECK.
> --- linux-2.6-orig/arch/blackfin/mach-bf533/boards/ezkit.c 2007-03-21 17:32:30.000000000 +0800
> +++ linux-2.6/arch/blackfin/mach-bf533/boards/ezkit.c 2007-03-21 14:42:17.000000000 +0800
> @@ -6,7 +6,7 @@
> * Created: 2005
> * Description:
> *
> - * Rev: $Id: ezkit.c,v 1.27 2006/11/24 10:23:54 aubrey Exp $
> + * Rev: $Id: ezkit.c 2794 2007-03-05 05:27:47Z cooloney $
> *
> * Modified: Robin Getz <rgetz@...ckfin.uclinux.org> - Named the boards
> * Copyright 2005 National ICT Australia (NICTA)
The RCS tags should be killed off as well, it's clear that they don't
really mean anthing, even in this case.
> diff -purN linux-2.6-orig/arch/blackfin/mach-bf533/boards/generic_board.c linux-2.6/arch/blackfin/mach-bf533/boards/generic_board.c
> --- linux-2.6-orig/arch/blackfin/mach-bf533/boards/generic_board.c 2007-03-21 17:32:30.000000000 +0800
> +++ linux-2.6/arch/blackfin/mach-bf533/boards/generic_board.c 2007-03-21 14:42:17.000000000 +0800
> @@ -6,7 +6,7 @@
> * Created: 2005
> * Description:
> *
> - * Rev: $Id: generic_board.c,v 1.9 2006/09/23 06:35:21 vapier Exp $
> + * Rev: $Id: generic_board.c 2684 2007-01-22 03:59:04Z vapier $
> *
> * Modified:
> * Copyright 2005 National ICT Australia (NICTA)
An then do-nothing patches like this can be left out..
> +#if defined(CONFIG_USB_ISP1760_HCD) || defined(CONFIG_USB_ISP1760_HCD_MODULE)
> +static struct resource bfin_isp1761_resources[] = {
> + [0] = {
> + .name = "isp1761-regs",
> + .start = ISP1761_BASE + 0x00000000,
> + .end = ISP1761_BASE + 0x000fffff,
> + .flags = IORESOURCE_MEM,
> + },
> + [1] = {
> + .start = ISP1761_IRQ,
> + .end = ISP1761_IRQ,
> + .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
> + },
Here you have low level.
> +};
> +
> +static struct platform_device bfin_isp1761_device = {
> + .name = "isp1761",
> + .id = 0,
> + .num_resources = ARRAY_SIZE(bfin_isp1761_resources),
> + .resource = bfin_isp1761_resources,
> +};
> +
> +static struct platform_device *bfin_isp1761_devices[] = {
> + &bfin_isp1761_device,
> +};
> +
> +int __init bfin_isp1761_init(void)
> +{
> + unsigned int num_devices=ARRAY_SIZE(bfin_isp1761_devices);
> +
> + printk(KERN_INFO "%s(): registering device resources\n", __FUNCTION__);
> + set_irq_type(ISP1761_IRQ, IRQF_TRIGGER_FALLING);
> +
But here you set it to falling?
> diff -purN linux-2.6-orig/include/asm-blackfin/asm-offsets.h linux-2.6/include/asm-blackfin/asm-offsets.h
> --- linux-2.6-orig/include/asm-blackfin/asm-offsets.h 1970-01-01 08:00:00.000000000 +0800
> +++ linux-2.6/include/asm-blackfin/asm-offsets.h 2007-03-21 15:21:10.000000000 +0800
This is generated by Kbuild, there's no point in including it in the
diff.
> -
> +/* CSYNC implementation for C file */
> #if defined(ANOMALY_05000312) && defined(ANOMALY_05000244)
Is there some reason these aren't config options? Perhaps an errata
sub-menu might be more intuitive.
> diff -purN linux-2.6-orig/include/asm-blackfin/entry.h linux-2.6/include/asm-blackfin/entry.h
> --- linux-2.6-orig/include/asm-blackfin/entry.h 2007-03-21 17:32:31.000000000 +0800
> +++ linux-2.6/include/asm-blackfin/entry.h 2007-03-21 14:15:41.000000000 +0800
> @@ -52,10 +52,8 @@
> #define RESTORE_ALL_SYS restore_context_no_interrupts
> #define RESTORE_CONTEXT restore_context_with_interrupts
>
> -#define STR(X) STR1(X)
> -#define STR1(X) #X
> -# define PT_OFF_ORIG_P0 208
> -# define PT_OFF_SR 8
> +#define PT_OFF_ORIG_P0 208
> +#define PT_OFF_SR 8
>
Should these be in asm-offsets?
The rest of the patch looks good, this is certainly an improvement!
-
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