Hi Kumar, On Sun, 7 Feb 2021 05:30:31 +0530 Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx> wrote: > > The global gpio_desc pointer and int were defined in the header, > instead put the definitions in the translation unit and add an extern > declaration for consumers of the header (currently only one, which is > perhaps why the linker didn't complain about symbol collisions). > > This fixes sparse related warnings for this driver: > drivers/staging/emxx_udc/emxx_udc.c: note: in included file: > drivers/staging/emxx_udc/emxx_udc.h:23:18: warning: symbol 'vbus_gpio' was not declared. Should it be static? > drivers/staging/emxx_udc/emxx_udc.h:24:5: warning: symbol 'vbus_irq' was not declared. Should it be static? > > Signed-off-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx> Given that drivers/staging/emxx_udc/emxx_udc.h is only included by drivers/staging/emxx_udc/emxx_udc.c, shouldn't these variables just be declared static in emxx_udc.c and removed from emxx_udc.h? > --- > drivers/staging/emxx_udc/emxx_udc.c | 3 +++ > drivers/staging/emxx_udc/emxx_udc.h | 4 ++-- > 2 files changed, 5 insertions(+), 2 deletions(-) > > diff --git a/drivers/staging/emxx_udc/emxx_udc.c b/drivers/staging/emxx_udc/emxx_udc.c > index a30b4f5b1..6983c3e31 100644 > --- a/drivers/staging/emxx_udc/emxx_udc.c > +++ b/drivers/staging/emxx_udc/emxx_udc.c > @@ -34,6 +34,9 @@ > #define DRIVER_DESC "EMXX UDC driver" > #define DMA_ADDR_INVALID (~(dma_addr_t)0) > > +struct gpio_desc *vbus_gpio; > +int vbus_irq; > + > static const char driver_name[] = "emxx_udc"; > static const char driver_desc[] = DRIVER_DESC; > > diff --git a/drivers/staging/emxx_udc/emxx_udc.h b/drivers/staging/emxx_udc/emxx_udc.h > index bca614d69..b3c4ccbe5 100644 > --- a/drivers/staging/emxx_udc/emxx_udc.h > +++ b/drivers/staging/emxx_udc/emxx_udc.h > @@ -20,8 +20,8 @@ > /* below hacked up for staging integration */ > #define GPIO_VBUS 0 /* GPIO_P153 on KZM9D */ > #define INT_VBUS 0 /* IRQ for GPIO_P153 */ > -struct gpio_desc *vbus_gpio; > -int vbus_irq; > +extern struct gpio_desc *vbus_gpio; > +extern int vbus_irq; > > /*------------ Board dependence(Wait) */ > > -- > 2.29.2 > -- Cheers, Stephen Rothwell
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