[U-Boot] [PATCH v8 2/4] EHCI: add callback ehci_fixup

[Marek Vasut <marek.vasut.n900@gmail.com>]

> Add callback to ehci_hcd.c to prepare
> for solving the problem with VBUS reset on Efika.
> 
> Signed-off-by: Jana Rapava <fermata7@gmail.com>
> Cc: Marek Vasut <marek.vasut@gmail.com>
> Cc: Remy Bohmer <linux@bohmer.net>
> Cc: Stefano Babic <sbabic@denx.de>
> 
> Acked-by: Marek Vasut <marek.vasut@gmail.com>
> ---
> Changes for v1:
>? ? ?  - split into patchset
>? ? ?  - add callback ehci_fixup
> Changes for v2:
>? ? ? ? ?  - make this the second patch in series
>? ? ? ? ?  - add comment to alias ehci_fixup
>? ? ? ? ?  - no actual changes
> Changes for v3:
>? ? ? ? ? ?  - no actual changes
>? ? ? ? ? ?  - make the comment a sentence
>? ? ? ? ? ?  - rebase patch on top of u-boot-imx/next
> Changes for v4:
>? ? ? ? ? ? ?  - no actual changes
>? ? ? ? ? ? ?  - change the versioning of changelog
>? ? ? ? ? ? ?  from per patchset to per patch
>? ? ? ? ? ? ?  - fix the appearance of comment
> Changes for v5:
> ??? - no actual changes
> ??? - reword the comment
> 
>?  drivers/usb/host/ehci-hcd.c |? ?  14 +++++++++++++-
>?  1 files changed, 13 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c
> index bdadd46..fb64f23 100644
> --- a/drivers/usb/host/ehci-hcd.c
> +++ b/drivers/usb/host/ehci-hcd.c
> @@ -536,6 +536,18 @@ static inline int min3(int a, int b, int c)
>?  ??? return a;
>?  }
>?  
> +inline void __ehci_fixup(uint32_t *status_reg, uint32_t *reg_ref)
> +{
> +??? wait_ms(50);
> +}
> +
> +/*
> + * This is an alias to __ehci_fixup

__ehci_fixup() and why do you break the line there so early?

> + * unless user provides other definition of ehci_fixup function.
> + */
> +void ehci_fixup(uint32_t *status_reg, uint32_t *reg_ref)
> +???  __attribute__((weak, alias("__ehci_fixup")));
> +
>?  int
>?  ehci_submit_root(struct usb_device *dev, unsigned long pipe, void
> *buffer, ??? ???  int length, struct devrequest *req)
> @@ -709,7 +721,7 @@ ehci_submit_root(struct usb_device *dev, unsigned
> long pipe, void *buffer, ??? ??? ??? ???  * usb 2.0 specification say 50 ms resets on
>?  ??? ??? ??? ???  * root
>?  ??? ??? ??? ???  */
> -??? ??? ??? ??? wait_ms(50);
> +??? ??? ??? ??? ehci_fixup(status_reg, &reg);
>?  ??? ??? ??? ??? /* terminate the reset */
>?  ??? ??? ??? ??? ehci_writel(status_reg, reg & ~EHCI_PS_PR);
>?  ??? ??? ??? ??? /*
> -- 
> 1.7.6.3
>