linux-kernel - [PATCH v13 07/12] usb: ehci: use bus->sysdev for DMA configuration

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Date:   Sat, 11 Feb 2017 09:27:18 +0800
From:   Peter Chen <peter.chen@....com>
To:     <gregkh@...uxfoundation.org>, <stern@...land.harvard.edu>,
        <ulf.hansson@...aro.org>, <broonie@...nel.org>, <sre@...nel.org>,
        <robh+dt@...nel.org>, <shawnguo@...nel.org>, <rjw@...ysocki.net>,
        <dbaryshkov@...il.com>
CC:     <heiko@...ech.de>, <linux-arm-kernel@...ts.infradead.org>,
        <p.zabel@...gutronix.de>, <devicetree@...r.kernel.org>,
        <pawel.moll@....com>, <mark.rutland@....com>,
        <linux-usb@...r.kernel.org>, <arnd@...db.de>,
        <s.hauer@...gutronix.de>, <mail@...iej.szmigiero.name>,
        <troy.kisky@...ndarydevices.com>, <festevam@...il.com>,
        <oscar@...andei.net>, <stephen.boyd@...aro.org>,
        <linux-pm@...r.kernel.org>, <stillcompiling@...il.com>,
        <linux-kernel@...r.kernel.org>, <mka@...omium.org>,
        <vaibhav.hiremath@...aro.org>, <gary.bisson@...ndarydevices.com>,
        <hverkuil@...all.nl>, <krzk@...nel.org>, <frank.li@....com>,
        <jun.li@....com>, Peter Chen <peter.chen@....com>,
        Sriram Dash <sriram.dash@....com>
Subject: [PATCH v13 07/12] 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@...db.de>
Cc: Sriram Dash <sriram.dash@....com>
Signed-off-by: Peter Chen <peter.chen@....com>
Acked-by: Alan Stern <stern@...land.harvard.edu>
---
 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) {
-- 
2.7.4