On Thu, 9 Feb 2017, Peter Chen wrote:
> Modified patch like below:
>
> From 083c2bc7f05b520c51f64ef6b8ee6a0bae499442 Mon Sep 17 00:00:00 2001
> From: Peter Chen <peter.chen@xxxxxxx>
> Date: Mon, 6 Feb 2017 14:50:33 +0800
> Subject: [PATCH 1/1] usb: ehci: use bus->sysdev for DMA configuration
>
> Set the dma for ehci from sysdev. The sysdev is pointing to device that
> is known to the system firmware or hardware.
>
> Cc: Arnd Bergmann <arnd@xxxxxxxx>
> Cc: Sriram Dash <sriram.dash@xxxxxxx>
> Signed-off-by: Peter Chen <peter.chen@xxxxxxx>
> ---
> drivers/usb/host/ehci-mem.c | 12 ++++++------
> 1 file changed, 6 insertions(+), 6 deletions(-)
>
> diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c
> index 4de4301..9b7e639 100644
> --- a/drivers/usb/host/ehci-mem.c
> +++ b/drivers/usb/host/ehci-mem.c
> @@ -138,7 +138,7 @@ static void ehci_mem_cleanup (struct ehci_hcd *ehci)
> ehci->sitd_pool = NULL;
>
> if (ehci->periodic)
> - dma_free_coherent (ehci_to_hcd(ehci)->self.controller,
> + dma_free_coherent(ehci_to_hcd(ehci)->self.sysdev,
> ehci->periodic_size * sizeof (u32),
> ehci->periodic, ehci->periodic_dma);
> ehci->periodic = NULL;
> @@ -155,7 +155,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
>
> /* QTDs for control/bulk/intr transfers */
> ehci->qtd_pool = dma_pool_create ("ehci_qtd",
> - ehci_to_hcd(ehci)->self.controller,
> + ehci_to_hcd(ehci)->self.sysdev,
> sizeof (struct ehci_qtd),
> 32 /* byte alignment (for hw parts) */,
> 4096 /* can't cross 4K */);
> @@ -165,7 +165,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
>
> /* QHs for control/bulk/intr transfers */
> ehci->qh_pool = dma_pool_create ("ehci_qh",
> - ehci_to_hcd(ehci)->self.controller,
> + ehci_to_hcd(ehci)->self.sysdev,
> sizeof(struct ehci_qh_hw),
> 32 /* byte alignment (for hw parts) */,
> 4096 /* can't cross 4K */);
> @@ -179,7 +179,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
>
> /* ITD for high speed ISO transfers */
> ehci->itd_pool = dma_pool_create ("ehci_itd",
> - ehci_to_hcd(ehci)->self.controller,
> + ehci_to_hcd(ehci)->self.sysdev,
> sizeof (struct ehci_itd),
> 32 /* byte alignment (for hw parts) */,
> 4096 /* can't cross 4K */);
> @@ -189,7 +189,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
>
> /* SITD for full/low speed split ISO transfers */
> ehci->sitd_pool = dma_pool_create ("ehci_sitd",
> - ehci_to_hcd(ehci)->self.controller,
> + ehci_to_hcd(ehci)->self.sysdev,
> sizeof (struct ehci_sitd),
> 32 /* byte alignment (for hw parts) */,
> 4096 /* can't cross 4K */);
> @@ -199,7 +199,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags)
>
> /* Hardware periodic table */
> ehci->periodic = (__le32 *)
> - dma_alloc_coherent (ehci_to_hcd(ehci)->self.controller,
> + dma_alloc_coherent(ehci_to_hcd(ehci)->self.sysdev,
> ehci->periodic_size * sizeof(__le32),
> &ehci->periodic_dma, flags);
> if (ehci->periodic == NULL) {
Acked-by: Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>
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