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usb: ulpi: Define a *otg_ulpi_create no-op

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Building a kernel for imx_v4_v5_defconfig with CONFIG_USB_ULPI disabled, results
in the following error:

arch/arm/mach-imx/built-in.o: In function 'pca100_init':
platform-mx2-emma.c:(.init.text+0x6788): undefined reference to 'otg_ulpi_create'
platform-mx2-emma.c:(.init.text+0x682c): undefined reference to 'mxc_ulpi_access_ops'

Fix this by providing a no-op definition of *otg_ulpi_create for the case when
CONFIG_USB_ULPI is not defined.

Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Fabio Estevam 2013-03-20 10:35:44 -03:00 committed by Felipe Balbi
parent 3416905ba0
commit 7fa4cd1a78
1 changed files with 8 additions and 0 deletions
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8
include/linux/usb/ulpi.h
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@ -181,8 +181,16 @@
/*-------------------------------------------------------------------------*/
#if IS_ENABLED(CONFIG_USB_ULPI)
struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops,
unsigned int flags);
#else
static inline struct usb_phy *otg_ulpi_create(struct usb_phy_io_ops *ops,
unsigned int flags)
{
return NULL;
}
#endif
#ifdef CONFIG_USB_ULPI_VIEWPORT
/* access ops for controllers with a viewport register */