Commit 4aa78264 authored Jun 19, 2009 by Daniel Mack Committed by Eric Miao Jul 03, 2009

[ARM] pxa: use kzalloc() in pxa_init_gpio_chip()



As slab is available early now, use kzalloc() rather than
alloc_bootmem_low() in pxa_init_gpio_chip().

This removes the following boot time warning:

<4>------------[ cut here ]------------
<4>WARNING: at mm/bootmem.c:535 alloc_arch_preferred_bootmem+0x2c/0x54()
<d>Modules linked in:
[<c0029430>] (unwind_backtrace+0x0/0xdc) from [<c0036f64>] (warn_slowpath_common+0x4c/0x80)
[<c0036f64>] (warn_slowpath_common+0x4c/0x80) from [<c000ede0>] (alloc_arch_preferred_bootmem+0x2c/0x54)
[<c000ede0>] (alloc_arch_preferred_bootmem+0x2c/0x54) from [<c000f2e4>] (___alloc_bootmem_nopanic+0x34/0xd0)
[<c000f2e4>] (___alloc_bootmem_nopanic+0x34/0xd0) from [<c000f6e4>] (___alloc_bootmem+0xc/0x34)
[<c000f6e4>] (___alloc_bootmem+0xc/0x34) from [<c000cb20>] (pxa_init_gpio+0x48/0x228)
[<c000cb20>] (pxa_init_gpio+0x48/0x228) from [<c0009794>] (init_IRQ+0x34/0x44)
[<c0009794>] (init_IRQ+0x34/0x44) from [<c00089d4>] (start_kernel+0x144/0x264)
[<c00089d4>] (start_kernel+0x144/0x264) from [<a0008034>] (0xa0008034)
<4>---[ end trace 1b75b31a2719ed1c ]---

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Eric Miao <eric.y.miao@gmail.com>

parent 5c68b099

arch/arm/plat-pxa/gpio.c

+2 −7

Original line number	Diff line number	Diff line
		@@ -16,7 +16,7 @@
		#include <linux/irq.h>
		#include <linux/io.h>
		#include <linux/sysdev.h>
		#include <linux/bootmem.h>
		#include <linux/slab.h>

		#include <mach/gpio.h>

		@@ -112,17 +112,12 @@ static int __init pxa_init_gpio_chip(int gpio_end)
		int i, gpio, nbanks = gpio_to_bank(gpio_end) + 1;
		struct pxa_gpio_chip *chips;

		/* this is early, we have to use bootmem allocator, and we really
		* want this to be allocated dynamically for different 'gpio_end'
		*/
		chips = alloc_bootmem_low(nbanks * sizeof(struct pxa_gpio_chip));
		chips = kzalloc(nbanks * sizeof(struct pxa_gpio_chip), GFP_KERNEL);
		if (chips == NULL) {
		pr_err("%s: failed to allocate GPIO chips\n", __func__);
		return -ENOMEM;
		}

		memset(chips, 0, nbanks * sizeof(struct pxa_gpio_chip));

		for (i = 0, gpio = 0; i < nbanks; i++, gpio += 32) {
		struct gpio_chip *c = &chips[i].chip;