linux-kernel - RE: [PATCH] usb: cdns3: Adds missing _

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Date:   Mon, 11 Jan 2021 09:20:31 +0000
From:   Pawel Laszczak <pawell@...ence.com>
To:     "peter.chen@....com" <peter.chen@....com>
CC:     "rogerq@...com" <rogerq@...com>,
        "a-govindraju@...com" <a-govindraju@...com>,
        "nsekhar@...com" <nsekhar@...com>,
        "gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Rahul Kumar <kurahul@...ence.com>
Subject: RE: [PATCH] usb: cdns3: Adds missing __iomem markers

Hi Peter,

What about this patch, can you apply it into for-usb-next ?

Thanks
Pawel

>
>Patch adds missing __iomem markers in core.h file
>and makes some changes in drd.c file related with
>these markers.
>
>The lack of __iomem has reported by sparse checker
>on parsic architecture.
>
>Signed-off-by: Pawel Laszczak <pawell@...ence.com>
>Reported-by: kernel test robot <lkp@...el.com>
>---
> drivers/usb/cdns3/core.h | 12 ++++++------
> drivers/usb/cdns3/drd.c  | 12 ++++++------
> 2 files changed, 12 insertions(+), 12 deletions(-)
>
>diff --git a/drivers/usb/cdns3/core.h b/drivers/usb/cdns3/core.h
>index f8e350cef699..bfa39795208e 100644
>--- a/drivers/usb/cdns3/core.h
>+++ b/drivers/usb/cdns3/core.h
>@@ -86,12 +86,12 @@ struct cdns {
> 	struct resource			xhci_res[CDNS_XHCI_RESOURCES_NUM];
> 	struct cdns3_usb_regs __iomem	*dev_regs;
>
>-	struct resource			otg_res;
>-	struct cdns3_otg_legacy_regs	*otg_v0_regs;
>-	struct cdns3_otg_regs		*otg_v1_regs;
>-	struct cdnsp_otg_regs		*otg_cdnsp_regs;
>-	struct cdns_otg_common_regs	*otg_regs;
>-	struct cdns_otg_irq_regs	*otg_irq_regs;
>+	struct resource				otg_res;
>+	struct cdns3_otg_legacy_regs __iomem	*otg_v0_regs;
>+	struct cdns3_otg_regs __iomem		*otg_v1_regs;
>+	struct cdnsp_otg_regs __iomem		*otg_cdnsp_regs;
>+	struct cdns_otg_common_regs __iomem	*otg_regs;
>+	struct cdns_otg_irq_reg __iomem		*otg_irq_regs;
> #define CDNS3_CONTROLLER_V0	0
> #define CDNS3_CONTROLLER_V1	1
> #define CDNSP_CONTROLLER_V2	2
>diff --git a/drivers/usb/cdns3/drd.c b/drivers/usb/cdns3/drd.c
>index 605a413db727..0701853b501c 100644
>--- a/drivers/usb/cdns3/drd.c
>+++ b/drivers/usb/cdns3/drd.c
>@@ -27,7 +27,7 @@
>  */
> static int cdns_set_mode(struct cdns *cdns, enum usb_dr_mode mode)
> {
>-	u32 __iomem *override_reg;
>+	void __iomem  *override_reg;
> 	u32 reg;
>
> 	switch (mode) {
>@@ -406,7 +406,7 @@ int cdns_drd_init(struct cdns *cdns)
> 		cdns->otg_v1_regs = NULL;
> 		cdns->otg_cdnsp_regs = NULL;
> 		cdns->otg_regs = regs;
>-		cdns->otg_irq_regs = (struct cdns_otg_irq_regs *)
>+		cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem  *)
> 				     &cdns->otg_v0_regs->ien;
> 		writel(1, &cdns->otg_v0_regs->simulate);
> 		dev_dbg(cdns->dev, "DRD version v0 (%08x)\n",
>@@ -416,14 +416,14 @@ int cdns_drd_init(struct cdns *cdns)
> 		cdns->otg_v1_regs = regs;
> 		cdns->otg_cdnsp_regs = regs;
>
>-		cdns->otg_regs = (void *)&cdns->otg_v1_regs->cmd;
>+		cdns->otg_regs = (void __iomem *)&cdns->otg_v1_regs->cmd;
>
>-		if (cdns->otg_cdnsp_regs->did == OTG_CDNSP_DID) {
>-			cdns->otg_irq_regs = (struct cdns_otg_irq_regs *)
>+		if (readl(cdns->otg_cdnsp_regs->did) == OTG_CDNSP_DID) {
>+			cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
> 					      &cdns->otg_cdnsp_regs->ien;
> 			cdns->version  = CDNSP_CONTROLLER_V2;
> 		} else {
>-			cdns->otg_irq_regs = (struct cdns_otg_irq_regs *)
>+			cdns->otg_irq_regs = (struct cdns_otg_irq_regs __iomem *)
> 					      &cdns->otg_v1_regs->ien;
> 			writel(1, &cdns->otg_v1_regs->simulate);
> 			cdns->version  = CDNS3_CONTROLLER_V1;
>--
>2.17.1