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* [RESEND PATCH v3 1/2] i2c: change id to let i2c-gpio work
@ 2012-10-16  5:17 Bo Shen
       [not found] ` <1350364668-21280-1-git-send-email-voice.shen-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
  0 siblings, 1 reply; 4+ messages in thread
From: Bo Shen @ 2012-10-16  5:17 UTC (permalink / raw)
  To: w.sang-bIcnvbaLZ9MEGnE8C9+IrQ, n.voss-+umVssTZoCsb1SvskN2V4Q
  Cc: khali-PUYAD+kWke1g9hUCZPvPmw, linux-i2c-u79uwXL29TY76Z2rM5mHXA,
	linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r,
	devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ,
	stable-u79uwXL29TY76Z2rM5mHXA, plagnioj-sclMFOaUSTBWk0Htik3J/w,
	nicolas.ferre-AIFe0yeh4nAAvxtiuMwx3w,
	manabian-Re5JQEeQqe8AvxtiuMwx3w,
	broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E, voice

From: voice <voice.shen-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>

The i2c core driver will turn the platform device ID to busnum
When using platfrom device ID as -1, it means dynamically assigned
the busnum. When writing code, we need to make sure the busnum,
and call i2c_register_board_info(int busnum, ...) to register device
if using -1, we do not know the value of busnum

In order to solve this issue, set the platform device ID as a fix number
Here using 0 to match the busnum used in i2c_regsiter_board_info()

Signed-off-by: Bo Shen <voice.shen-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
---
Resend
  Cc linux kernel stable mailing list
Change since v2
  Fix this issue for more boards
Change since v1
  Make the commit message more clear
---
 arch/arm/mach-at91/at91rm9200_devices.c  |    2 +-
 arch/arm/mach-at91/at91sam9260_devices.c |    2 +-
 arch/arm/mach-at91/at91sam9261_devices.c |    2 +-
 arch/arm/mach-at91/at91sam9263_devices.c |    2 +-
 arch/arm/mach-at91/at91sam9rl_devices.c  |    2 +-
 5 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c
index a563189..7cd8053 100644
--- a/arch/arm/mach-at91/at91rm9200_devices.c
+++ b/arch/arm/mach-at91/at91rm9200_devices.c
@@ -479,7 +479,7 @@ static struct i2c_gpio_platform_data pdata = {
 
 static struct platform_device at91rm9200_twi_device = {
 	.name			= "i2c-gpio",
-	.id			= -1,
+	.id			= 0,
 	.dev.platform_data	= &pdata,
 };
 
diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c
index a76b868..44385a4 100644
--- a/arch/arm/mach-at91/at91sam9260_devices.c
+++ b/arch/arm/mach-at91/at91sam9260_devices.c
@@ -389,7 +389,7 @@ static struct i2c_gpio_platform_data pdata = {
 
 static struct platform_device at91sam9260_twi_device = {
 	.name			= "i2c-gpio",
-	.id			= -1,
+	.id			= 0,
 	.dev.platform_data	= &pdata,
 };
 
diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c
index 9752f17..0256a00 100644
--- a/arch/arm/mach-at91/at91sam9261_devices.c
+++ b/arch/arm/mach-at91/at91sam9261_devices.c
@@ -285,7 +285,7 @@ static struct i2c_gpio_platform_data pdata = {
 
 static struct platform_device at91sam9261_twi_device = {
 	.name			= "i2c-gpio",
-	.id			= -1,
+	.id			= 0,
 	.dev.platform_data	= &pdata,
 };
 
diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c
index 8dde220..23b6384 100644
--- a/arch/arm/mach-at91/at91sam9263_devices.c
+++ b/arch/arm/mach-at91/at91sam9263_devices.c
@@ -567,7 +567,7 @@ static struct i2c_gpio_platform_data pdata = {
 
 static struct platform_device at91sam9263_twi_device = {
 	.name			= "i2c-gpio",
-	.id			= -1,
+	.id			= 0,
 	.dev.platform_data	= &pdata,
 };
 
diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c
index d6ca054..3d2c81d 100644
--- a/arch/arm/mach-at91/at91sam9rl_devices.c
+++ b/arch/arm/mach-at91/at91sam9rl_devices.c
@@ -314,7 +314,7 @@ static struct i2c_gpio_platform_data pdata = {
 
 static struct platform_device at91sam9rl_twi_device = {
 	.name			= "i2c-gpio",
-	.id			= -1,
+	.id			= 0,
 	.dev.platform_data	= &pdata,
 };
 
-- 
1.7.9.5

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2012-10-16  5:17 [RESEND PATCH v3 1/2] i2c: change id to let i2c-gpio work Bo Shen
     [not found] ` <1350364668-21280-1-git-send-email-voice.shen-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2012-10-16  5:17   ` [RESEND PATCH v3 2/2] i2c: change id to let i2c-at91 work Bo Shen
     [not found]     ` <1350364668-21280-2-git-send-email-voice.shen-AIFe0yeh4nAAvxtiuMwx3w@public.gmane.org>
2012-10-16  7:13       ` Greg KH
2012-10-16  7:13   ` [RESEND PATCH v3 1/2] i2c: change id to let i2c-gpio work Greg KH

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