Re: [PATCH -next v2] usb: dwc3: include extcon.h to fix compile error

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On Wed, May 11, 2022 at 10:26:22AM +0800, Guan Jing wrote:
> If dwc3 is not include extcon.h, the dwc3 driver
> will fail to link:
> 
> drivers/usb/dwc3/core.o: In function `dwc3_probe':
> core.c:(.text+0x1095): undefined reference to `extcon_get_edev_by_phandle'
> core.c:(.text+0x10bd): undefined reference to `extcon_get_extcon_dev'
> 
> Add miss #include <linux/extcon.h> to fix this error.
> 
> Fixes: 0f0101719138 ("usb: dwc3: Don't switch OTG -> peripheral if extcon is present")
> Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
> Signed-off-by: Guan Jing <guanjing6@xxxxxxxxxx>
> ---
>  drivers/usb/dwc3/core.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index 950e238c65bf..e619a3ef6c46 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -28,6 +28,7 @@
>  #include <linux/pinctrl/consumer.h>
>  #include <linux/reset.h>
>  #include <linux/bitfield.h>
> +#include <linux/extcon.h>
>  
>  #include <linux/usb/ch9.h>
>  #include <linux/usb/gadget.h>
> -- 
> 2.17.1
> 

As Jack said, this will not fix a linker error.  I think something else
is wrong with your system as your .config file builds just fine for me.

greg k-h



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