Re: drivers/usb/cdns3/cdnsp-gadget.c:168:9: sparse: sparse: cast from restricted __le32

[Arnd Bergmann]

On Sat, Jul 18, 2026, at 09:49, kernel test robot wrote:
> sparse warnings: (new ones prefixed by >>)
>    drivers/usb/cdns3/cdnsp-gadget.c:166:16: sparse: sparse: cast to 
> restricted __le32
>    drivers/usb/cdns3/cdnsp-gadget.c:166:16: sparse: sparse: cast to 
> restricted __le32
>    drivers/usb/cdns3/cdnsp-gadget.c:166:16: sparse: sparse: cast to 
> restricted __le32

This is clearly a bug in the driver, introduced in commit
241e2ce88e5a ("usb: cdnsp: Fix issue with resuming from L1"):

> 241e2ce88e5a49 Pawel Laszczak 2025-04-18  165  
> 241e2ce88e5a49 Pawel Laszczak 2025-04-18 @166  	val  = 
> le32_to_cpu(readl(reg));
> 241e2ce88e5a49 Pawel Laszczak 2025-04-18  167  	val = 
> CHICKEN_APB_TIMEOUT_SET(val, cdns->override_apb_timeout);

This is broken on big-endian machines, because readl() contains
an implicit byteswap, and the extra le32_to_cpu() swaps the
value back.

Pawel, can you fix this and address any additional sparse warnings
you see in this file?

      Arnd