21 Sep
2023
21 Sep
'23
6:21 p.m.
On Thu, Sep 21, 2023, at 08:34, Takashi Iwai wrote:
On Thu, 21 Sep 2023 11:23:14 +0200, Richard Fitzgerald wrote:
On 21/9/23 00:35, kernel test robot wrote:
In file included from arch/hexagon/include/asm/io.h:337: include/asm-generic/io.h:547:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __raw_readb(PCI_IOBASE + addr); ~~~~~~~~~~ ^ include/asm-generic/io.h:560:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr)); ~~~~~~~~~~ ^ include/uapi/linux/byteorder/little_endian.h:37:51: note: expanded from macro '__le16_to_cpu' #define __le16_to_cpu(x) ((__force __u16)(__le16)(x)) ^This looks like it has nothing to do with cirrus_scodec_test, it's just unfortunate that including gpio/driver.h results in also including io.h.
Yeah, I believe this part is irrelevant can be ignored. It's included as a part of (single) log.
Correct, it's a known bug that we've been working on for (literally) years, it should be fixed soon by enforcing CONFIG_HAS_IOPORT soon to blank out these functions on architectures that cannot support them. I hope we can land the last patch for this in 6.7.
Arnd