Re: drivers/tty/mips_ejtag_fdc.c:343:32: error: incompatible pointer types passing 'const char **' to parameter of type 'const u8 **' (aka 'const unsigned char **')

From: Jiri Slaby
Date: Fri Jan 10 2025 - 02:00:02 EST


On 10. 01. 25, 6:41, kernel test robot wrote:
Hi Jiri,

FYI, the error/warning was bisected to this commit, please ignore it if it's irrelevant.

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2144da25584eb10b84252230319b5783f6a83041
commit: ce7cbd9a6c81b5fc899bbc730072a1bddeae5d0d tty: mips_ejtag_fdc: use u8 for character pointers
date: 1 year, 1 month ago
config: mips-randconfig-r054-20250110 (https://download.01.org/0day-ci/archive/20250110/202501101327.oGdWbmuk-lkp@xxxxxxxxx/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250110/202501101327.oGdWbmuk-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202501101327.oGdWbmuk-lkp@xxxxxxxxx/

All errors (new ones prefixed by >>):

drivers/tty/mips_ejtag_fdc.c:343:32: error: incompatible pointer types passing 'const char **' to parameter of type 'const u8 **' (aka 'const unsigned char **') [-Werror,-Wincompatible-pointer-types]
343 | word = mips_ejtag_fdc_encode(&buf_ptr, &buf_len, 1);

This one was fixed by:
commit 188942f05ce45f80c06f7242ad7478bd204c3387
Author: Serge Semin <fancer.lancer@xxxxxxxxx>
Date: Thu Feb 15 20:17:29 2024 +0300

tty: mips_ejtag_fdc: Fix passing incompatible pointer type warning


drivers/tty/mips_ejtag_fdc.c:1224:31: error: incompatible pointer types passing 'const char *[1]' to parameter of type 'const u8 **' (aka 'const unsigned char **') [-Werror,-Wincompatible-pointer-types]
1224 | word = mips_ejtag_fdc_encode(bufs, &kgdbfdc_wbuflen, 1);
| ^~~~

This one, I will fix.

thanks,
--
js
suse labs