Re: [PATCH 2.6.24-rc5-mm 3/3] gpiolib: obsolete drivers/i2c/chips/pca9539.c

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Eric,

On Wed, 19 Dec 2007 16:45:00 +0800, eric miao wrote:
> Updated as follows, the driver name is left unchanged, while
> Kconfig and Documentation are modified so that
> 1. mark it as deprecated
> 2. exclusive selection of SENSOR_PCA9539 and GPIO_PCA9539
> 
> From c58dc1119355dc94d80763aef9d9bc999abda6df Mon Sep 17 00:00:00 2001
> From: eric miao <[email protected]>
> Date: Wed, 19 Dec 2007 16:40:04 +0800
> Subject: [PATCH] gpiolib: mark drivers/i2c/chips/pca9539.c as deprecated
> 
> use drivers/gpio/pca9539.c instead.
> 
> Signed-off-by: eric miao <[email protected]>
> Acked-by: Ben Gardner <[email protected]>
> ---
>  Documentation/i2c/chips/pca9539 |    3 +++
>  drivers/i2c/chips/Kconfig       |    7 +++++--
>  2 files changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/i2c/chips/pca9539 b/Documentation/i2c/chips/pca9539
> index c4fce6a..1d81c53 100644
> --- a/Documentation/i2c/chips/pca9539
> +++ b/Documentation/i2c/chips/pca9539
> @@ -1,6 +1,9 @@
>  Kernel driver pca9539
>  =====================
> 
> +NOTE: this driver is deprecated and will be dropped soon, use
> +drivers/gpio/pca9539.c instead.
> +
>  Supported chips:
>    * Philips PCA9539
>      Prefix: 'pca9539'
> diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
> index 2e1c24f..54fd302 100644
> --- a/drivers/i2c/chips/Kconfig
> +++ b/drivers/i2c/chips/Kconfig
> @@ -66,8 +66,8 @@ config SENSORS_PCF8574
>  	  hardware.  If unsure, say N.
> 
>  config SENSORS_PCA9539
> -	tristate "Philips PCA9539 16-bit I/O port"
> -	depends on EXPERIMENTAL
> +	tristate "Philips PCA9539 16-bit I/O port (DEPRECATED)"
> +	depends on EXPERIMENTAL && !GPIO_PCA9539

If I remember correctly how the Kconfig language works, this will allow
for both drivers to be built as modules at the same time. Given that
they have the same name, which one will be loaded by "modprobe
pca9539"? I think that you should instead express the dependency as
"GPIO_PCA9539=n".

>  	help
>  	  If you say yes here you get support for the Philips PCA9539
>  	  16-bit I/O port.
> @@ -75,6 +75,9 @@ config SENSORS_PCA9539
>  	  This driver can also be built as a module.  If so, the module
>  	  will be called pca9539.
> 
> +	  This driver is deprecated and will be dropped soon. Use
> +	  drivers/gpio/pca9539.c instead.
> +
>  config SENSORS_PCF8591
>  	tristate "Philips PCF8591"
>  	depends on EXPERIMENTAL

Other than that I'm fine with this approach, note however that it will
have to go through David rather than me, as I can't merge this before
the new pca9539 driver.

Thanks,
-- 
Jean Delvare
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]
  Powered by Linux