From: David Brownell <david-b@pacbell.net>
Date: Tue, 26 Feb 2008 19:02:30 +0000 (-0800)
Subject: ARM: OMAP: fix omap i2c init (regression)
X-Git-Tag: v2.6.25-rc6~29^2~4^2~10
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cfa9a63a9ad25fd3d3218a4e95f5a93090669f3c;p=linux-2.6

ARM: OMAP: fix omap i2c init (regression)

In mainline, the "old style" I2C registration was only removed for
OMAP2, leading to init-time bugs (regressions) like:

    sysfs: duplicate filename 'i2c_omap.1' can not be created
    ------------[ cut here ]------------
    WARNING: at fs/sysfs/dir.c:424 sysfs_add_one+0x40/0xd4()
    Modules linked in:
    	... deletia ...
    [<c0036a38>] (omap_init_i2c+0x0/0x50) from [<c000cea8>] (omap_init_devices+0x10/0x24)
     r4:c001e000
    [<c000ce98>] (omap_init_devices+0x0/0x24) from [<c0008684>] (do_initcalls+0x78/0x200)
    	... deletia ...
    ---[ end trace ca143223eefdc828 ]---
    kobject_add_internal failed for i2c_omap.1 with -EEXIST, don't try to register things with the same name in the same directory.

The fix is obvious:  remove the old init code, it's no longer needed.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index c5dab1d641..4a53f9ba6c 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -88,68 +88,6 @@ EXPORT_SYMBOL(dsp_kfunc_device_register);
 static inline void omap_init_dsp(void) { }
 #endif	/* CONFIG_OMAP_DSP */
 
-/*-------------------------------------------------------------------------*/
-#if	defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
-
-#define	OMAP1_I2C_BASE		0xfffb3800
-#define OMAP2_I2C_BASE1		0x48070000
-#define OMAP_I2C_SIZE		0x3f
-#define OMAP1_I2C_INT		INT_I2C
-#define OMAP2_I2C_INT1		56
-
-static struct resource i2c_resources1[] = {
-	{
-		.start		= 0,
-		.end		= 0,
-		.flags		= IORESOURCE_MEM,
-	},
-	{
-		.start		= 0,
-		.flags		= IORESOURCE_IRQ,
-	},
-};
-
-/* DMA not used; works around erratum writing to non-empty i2c fifo */
-
-static struct platform_device omap_i2c_device1 = {
-	.name           = "i2c_omap",
-	.id             = 1,
-	.num_resources	= ARRAY_SIZE(i2c_resources1),
-	.resource	= i2c_resources1,
-};
-
-/* See also arch/arm/mach-omap2/devices.c for second I2C on 24xx */
-static void omap_init_i2c(void)
-{
-	if (cpu_is_omap24xx()) {
-		i2c_resources1[0].start = OMAP2_I2C_BASE1;
-		i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
-		i2c_resources1[1].start = OMAP2_I2C_INT1;
-	} else {
-		i2c_resources1[0].start = OMAP1_I2C_BASE;
-		i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
-		i2c_resources1[1].start = OMAP1_I2C_INT;
-	}
-
-	/* FIXME define and use a boot tag, in case of boards that
-	 * either don't wire up I2C, or chips that mux it differently...
-	 * it can include clocking and address info, maybe more.
-	 */
-	if (cpu_is_omap24xx()) {
-		omap_cfg_reg(M19_24XX_I2C1_SCL);
-		omap_cfg_reg(L15_24XX_I2C1_SDA);
-	} else {
-		omap_cfg_reg(I2C_SCL);
-		omap_cfg_reg(I2C_SDA);
-	}
-
-	(void) platform_device_register(&omap_i2c_device1);
-}
-
-#else
-static inline void omap_init_i2c(void) {}
-#endif
-
 /*-------------------------------------------------------------------------*/
 #if	defined(CONFIG_KEYBOARD_OMAP) || defined(CONFIG_KEYBOARD_OMAP_MODULE)
 
@@ -501,7 +439,6 @@ static int __init omap_init_devices(void)
 	 * in alphabetical order so they're easier to sort through.
 	 */
 	omap_init_dsp();
-	omap_init_i2c();
 	omap_init_kp();
 	omap_init_mmc();
 	omap_init_uwire();