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Message-ID: <202512140305.VFN3KkVr-lkp@intel.com>
Date: Sun, 14 Dec 2025 03:40:30 +0800
From: kernel test robot <lkp@...el.com>
To: Damien Riégel <damien.riegel@...abs.com>,
greybus-dev@...ts.linaro.org
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org, Johan Hovold <johan@...nel.org>,
Alex Elder <elder@...nel.org>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Silicon Labs Kernel Team <linux-devel@...abs.com>,
Gabriel Beaulieu <gabriel.beaulieu@...abs.com>,
Damien Riégel <damien.riegel@...abs.com>
Subject: Re: [PATCH 14/14] greybus: cpc: add CPC SDIO host driver
Hi Damien,
kernel test robot noticed the following build warnings:
[auto build test WARNING on linus/master]
[also build test WARNING on v6.18 next-20251212]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Damien-Ri-gel/greybus-cpc-add-minimal-CPC-Host-Device-infrastructure/20251213-010308
base: linus/master
patch link: https://lore.kernel.org/r/20251212161308.25678-15-damien.riegel%40silabs.com
patch subject: [PATCH 14/14] greybus: cpc: add CPC SDIO host driver
config: hexagon-allmodconfig (https://download.01.org/0day-ci/archive/20251214/202512140305.VFN3KkVr-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251214/202512140305.VFN3KkVr-lkp@intel.com/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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202512140305.VFN3KkVr-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/greybus/cpc/sdio.c:166:59: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
166 | dev_dbg(ctx->dev, "Invalid Greybus header size: %lu\n", gb_size);
| ~~~ ^~~~~~~
| %zu
include/linux/dev_printk.h:165:39: note: expanded from macro 'dev_dbg'
165 | dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/dynamic_debug.h:285:19: note: expanded from macro 'dynamic_dev_dbg'
285 | dev, fmt, ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/dynamic_debug.h:261:59: note: expanded from macro '_dynamic_func_call'
261 | _dynamic_func_call_cls(_DPRINTK_CLASS_DFLT, fmt, func, ##__VA_ARGS__)
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:259:65: note: expanded from macro '_dynamic_func_call_cls'
259 | __dynamic_func_call_cls(__UNIQUE_ID(ddebug), cls, fmt, func, ##__VA_ARGS__)
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:231:15: note: expanded from macro '__dynamic_func_call_cls'
231 | func(&id, ##__VA_ARGS__); \
| ^~~~~~~~~~~
drivers/greybus/cpc/sdio.c:172:60: warning: format specifies type 'unsigned long' but the argument has type 'size_t' (aka 'unsigned int') [-Wformat]
172 | dev_dbg(ctx->dev, "Payload size exceeds maximum: %lu\n", gb_size);
| ~~~ ^~~~~~~
| %zu
include/linux/dev_printk.h:165:39: note: expanded from macro 'dev_dbg'
165 | dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/dynamic_debug.h:285:19: note: expanded from macro 'dynamic_dev_dbg'
285 | dev, fmt, ##__VA_ARGS__)
| ~~~ ^~~~~~~~~~~
include/linux/dynamic_debug.h:261:59: note: expanded from macro '_dynamic_func_call'
261 | _dynamic_func_call_cls(_DPRINTK_CLASS_DFLT, fmt, func, ##__VA_ARGS__)
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:259:65: note: expanded from macro '_dynamic_func_call_cls'
259 | __dynamic_func_call_cls(__UNIQUE_ID(ddebug), cls, fmt, func, ##__VA_ARGS__)
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:231:15: note: expanded from macro '__dynamic_func_call_cls'
231 | func(&id, ##__VA_ARGS__); \
| ^~~~~~~~~~~
2 warnings generated.
vim +166 drivers/greybus/cpc/sdio.c
156
157 static bool cpc_sdio_get_payload_size(struct cpc_sdio *ctx, const struct frame_header *header,
158 size_t *payload_size)
159 {
160 size_t gb_size;
161
162 gb_size = le16_to_cpu(header->gb.size);
163
164 /* Validate that the size is at least as large as the Greybus header */
165 if (gb_size < GREYBUS_HEADER_SIZE) {
> 166 dev_dbg(ctx->dev, "Invalid Greybus header size: %lu\n", gb_size);
167 return false;
168 }
169
170 /* Validate maximum size */
171 if (gb_size > (GB_CPC_SDIO_MSG_SIZE_MAX + GREYBUS_HEADER_SIZE)) {
172 dev_dbg(ctx->dev, "Payload size exceeds maximum: %lu\n", gb_size);
173 return false;
174 }
175
176 /* Size includes the Greybus header, so subtract it to get payload size */
177 *payload_size = gb_size - GREYBUS_HEADER_SIZE;
178
179 return true;
180 }
181
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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