linux-kernel - Re: [PATCH] Input: wdt87xx_i2c

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Date:   Mon, 5 Sep 2016 10:28:04 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     hn.chen@...dahitech.com
Cc:     linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Input: wdt87xx_i2c - fix the flash erase issue

On Mon, Sep 05, 2016 at 05:02:16PM +0800, hn.chen@...dahitech.com wrote:
> From: HungNien Chen <hn.chen@...dahitech.com>
> 
> Flash erase wait 50ms for the operation completed in last driver.
> It will take risk since the spec says the typical is 30ms but the max is
> 200ms. Replace the value with 200ms for safty.
> 
> Signed-off-by: HungNien Chen <hn.chen@...dahitech.com>

Applied, thank you.

> ---
>  drivers/input/touchscreen/wdt87xx_i2c.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/input/touchscreen/wdt87xx_i2c.c b/drivers/input/touchscreen/wdt87xx_i2c.c
> index 73861ad..2519617 100644
> --- a/drivers/input/touchscreen/wdt87xx_i2c.c
> +++ b/drivers/input/touchscreen/wdt87xx_i2c.c
> @@ -23,7 +23,7 @@
>  #include <asm/unaligned.h>
>  
>  #define WDT87XX_NAME		"wdt87xx_i2c"
> -#define WDT87XX_DRV_VER		"0.9.7"
> +#define WDT87XX_DRV_VER		"0.9.8"
>  #define WDT87XX_FW_NAME		"wdt87xx_fw.bin"
>  #define WDT87XX_CFG_NAME	"wdt87xx_cfg.bin"
>  
> @@ -157,6 +157,7 @@
>  /* Controller requires minimum 300us between commands */
>  #define WDT_COMMAND_DELAY_MS		2
>  #define WDT_FLASH_WRITE_DELAY_MS	4
> +#define	WDT_FLASH_ERASE_DELAY_MS	200
>  #define WDT_FW_RESET_TIME		2500
>  
>  struct wdt87xx_sys_param {
> @@ -726,7 +727,7 @@ static int wdt87xx_write_firmware(struct i2c_client *client, const void *chunk)
>  				break;
>  			}
>  
> -			msleep(50);
> +			msleep(WDT_FLASH_ERASE_DELAY_MS);
>  
>  			error = wdt87xx_write_data(client, data, start_addr,
>  						   page_size);
> -- 
> 1.9.1
> 

-- 
Dmitry