[PATCH v3] usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup()

[PATCH v3] usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup()

[Ben Dooks]

The dwc3_ulpi_setup() calls the register read and write calls with
dwc3->regs when both these calls take the dwc3 structure directly.

Chnage these two calls to fix the following sparse warning, and
possibly a nasty bug in the dwc3_ulpi_setup() code:

drivers/usb/dwc3/core.c:796:45: warning: incorrect type in argument 1 (different address spaces)
drivers/usb/dwc3/core.c:796:45:    expected struct dwc3 *dwc
drivers/usb/dwc3/core.c:796:45:    got void [noderef] __iomem *regs
drivers/usb/dwc3/core.c:798:40: warning: incorrect type in argument 1 (different address spaces)
drivers/usb/dwc3/core.c:798:40:    expected struct dwc3 *dwc
drivers/usb/dwc3/core.c:798:40:    got void [noderef] __iomem *regs

Cc: stable@kernel.org
Fixes: 9accc68b1cf0 ("usb: dwc3: Add dwc pointer to dwc3_readl/writel")
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
---
v2:
  add fixes and cc to stable
v3:
  fixed the fixes: tag to point to correct commit
---
 drivers/usb/dwc3/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index 517aa7f1486d..ceb49f2f8004 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -789,9 +789,9 @@ static void dwc3_ulpi_setup(struct dwc3 *dwc)
 
 	if (dwc->enable_usb2_transceiver_delay) {
 		for (index = 0; index < dwc->num_usb2_ports; index++) {
-			reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(index));
+			reg = dwc3_readl(dwc, DWC3_GUSB2PHYCFG(index));
 			reg |= DWC3_GUSB2PHYCFG_XCVRDLY;
-			dwc3_writel(dwc->regs, DWC3_GUSB2PHYCFG(index), reg);
+			dwc3_writel(dwc, DWC3_GUSB2PHYCFG(index), reg);
 		}
 	}
 }
-- 
2.37.2.352.g3c44437643

Re: [PATCH v3] usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup()

[Sergey Shtylyov]

On 7/3/26 7:20 PM, Ben Dooks wrote:

> The dwc3_ulpi_setup() calls the register read and write calls with

   Hmm... maybe "does the register read/write calls"?

> dwc3->regs when both these calls take the dwc3 structure directly.
> 
> Chnage these two calls to fix the following sparse warning, and

   Change.

> possibly a nasty bug in the dwc3_ulpi_setup() code:
> 
> drivers/usb/dwc3/core.c:796:45: warning: incorrect type in argument 1 (different address spaces)
> drivers/usb/dwc3/core.c:796:45:    expected struct dwc3 *dwc
> drivers/usb/dwc3/core.c:796:45:    got void [noderef] __iomem *regs
> drivers/usb/dwc3/core.c:798:40: warning: incorrect type in argument 1 (different address spaces)
> drivers/usb/dwc3/core.c:798:40:    expected struct dwc3 *dwc
> drivers/usb/dwc3/core.c:798:40:    got void [noderef] __iomem *regs
> 
> Cc: stable@kernel.org
> Fixes: 9accc68b1cf0 ("usb: dwc3: Add dwc pointer to dwc3_readl/writel")
> Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
> ---
> v2:
>   add fixes and cc to stable
> v3:
>   fixed the fixes: tag to point to correct commit

[...]

MBR, Sergey