vger.kernel.org
>> Subject: RE: [PATCH] powerpc/usb: use ioremap instead of base plus offset
>> to access regs
>>
>>
>>> #ifndef CONFIG_ARCH_MXC
>>> if (pdata->have_sysif_regs)
>>> - usb_sys_regs = (struct us
>-Original Message-
>From: David Laight [mailto:david.lai...@aculab.com]
>Sent: Wednesday, November 02, 2011 5:07 PM
>To: Xie Shaohui-B21989; linuxppc-dev@lists.ozlabs.org
>Cc: linux-...@vger.kernel.org
>Subject: RE: [PATCH] powerpc/usb: use ioremap instead of base plus
> #ifndef CONFIG_ARCH_MXC
> if (pdata->have_sysif_regs)
> - usb_sys_regs = (struct usb_sys_interface *)
> - ((u32)dr_regs + USB_DR_SYS_OFFSET);
> + usb_sys_regs = ioremap(res->start + USB_DR_SYS_OFFSET,
> + siz
Below are codes for accessing usb sysif_regs in driver:
usb_sys_regs = (struct usb_sys_interface *)
((u32)dr_regs + USB_DR_SYS_OFFSET);
these codes work in 32-bit, but in 64-bit, accessing members of 'usb_sys_regs'
will cause call trace like below:
Unable to handle kernel
