From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 10/10] gpio: allocate gpio_desc table dynamically
Date: Sat, 9 Mar 2013 11:53:11 +0100 [thread overview]
Message-ID: <1362826391-16215-11-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1362826391-16215-1-git-send-email-s.hauer@pengutronix.de>
Some systems are runnignfrom a very limited SRAM, but have a huge
malloc space in SDRAM. The bss normally is in SRAM, so we should
avoid having big structures there. The gpio_desc table is 3072 bytes
big, so allocate it dynamically instead.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/gpio/gpio.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/gpio/gpio.c b/drivers/gpio/gpio.c
index d37f5a0..9d081c2 100644
--- a/drivers/gpio/gpio.c
+++ b/drivers/gpio/gpio.c
@@ -1,3 +1,4 @@
+#include <init.h>
#include <common.h>
#include <command.h>
#include <complete.h>
@@ -13,7 +14,15 @@ struct gpio_info {
char *label;
};
-static struct gpio_info gpio_desc[ARCH_NR_GPIOS];
+static struct gpio_info *gpio_desc;
+
+static int gpio_desc_alloc(void)
+{
+ gpio_desc = xzalloc(sizeof(struct gpio_info) * ARCH_NR_GPIOS);
+
+ return 0;
+}
+pure_initcall(gpio_desc_alloc);
static int gpio_ensure_requested(struct gpio_info *gi, int gpio)
{
--
1.8.2.rc2
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next prev parent reply other threads:[~2013-03-09 10:53 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-09 10:53 [PATCH] image and bss size decrease Sascha Hauer
2013-03-09 10:53 ` [PATCH 01/10] mips: initialize malloc pool before start_barebox() Sascha Hauer
2013-03-09 10:53 ` [PATCH 02/10] nios: " Sascha Hauer
2013-03-09 10:53 ` [PATCH 03/10] openrisc: " Sascha Hauer
2013-03-09 10:53 ` [PATCH 04/10] blackfin: " Sascha Hauer
2013-03-09 10:53 ` [PATCH 05/10] x86: " Sascha Hauer
2013-03-09 10:53 ` [PATCH 06/10] bus: Make struct device a pointer Sascha Hauer
2013-03-09 10:53 ` [PATCH 07/10] command: remove list_head from struct command Sascha Hauer
2013-03-09 10:53 ` [PATCH 08/10] command: remove statically initialized aliases Sascha Hauer
2013-03-09 10:53 ` [PATCH 09/10] fs: allocate FILE table dynamically Sascha Hauer
2013-03-09 10:53 ` Sascha Hauer [this message]
2013-03-09 18:38 ` [PATCH] image and bss size decrease Jean-Christophe PLAGNIOL-VILLARD
2013-03-10 10:02 ` Sascha Hauer
2013-03-11 9:08 ` Juergen Beisert
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