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Message-ID: <bdb58dfb-9423-4949-9b2a-e979bfebb2f4@rowland.harvard.edu>
Date: Wed, 26 Jul 2023 10:29:28 -0400
From: Alan Stern <stern@...land.harvard.edu>
To: Yangtao Li <frank.li@...o.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Nicolas Ferre <nicolas.ferre@...rochip.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Claudiu Beznea <claudiu.beznea@...rochip.com>,
linux-usb@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: Re: [PATCH 03/30] usb: ohci-at91: Use
devm_platform_get_and_ioremap_resource()
On Wed, Jul 26, 2023 at 10:27:43AM -0400, Alan Stern wrote:
> On Wed, Jul 26, 2023 at 07:37:49PM +0800, Yangtao Li wrote:
> > Convert platform_get_resource(), devm_ioremap_resource() to a single
> > call to devm_platform_get_and_ioremap_resource(), as this is exactly
> > what this function does.
> >
> > Signed-off-by: Yangtao Li <frank.li@...o.com>
> > ---
> > drivers/usb/host/ohci-at91.c | 3 +--
> > 1 file changed, 1 insertion(+), 2 deletions(-)
> >
> > diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
> > index b9ce8d80f20b..f957d008f360 100644
> > --- a/drivers/usb/host/ohci-at91.c
> > +++ b/drivers/usb/host/ohci-at91.c
> > @@ -200,8 +200,7 @@ static int usb_hcd_at91_probe(const struct hc_driver *driver,
> > return -ENOMEM;
> > ohci_at91 = hcd_to_ohci_at91_priv(hcd);
> >
> > - res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > - hcd->regs = devm_ioremap_resource(dev, res);
> > + hcd->regs = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
> > if (IS_ERR(hcd->regs)) {
> > retval = PTR_ERR(hcd->regs);
> > goto err;
>
> Did you try to test-compile this change (and all the similar ones in
> this series)? If you did, you would have gotten a warning about res
> being used without being initialized.
Oops! My apologies, I didn't read the code closely enough. Sorry.
For all the ehci, ohci, and uhci changes in this series:
Acked-by: Alan Stern <stern@...land.harvard.edu>
Alan Stern
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