From: kernel test robot <lkp@intel.com>
To: Ronald Claveau <linux-kernel-dev@aliel.fr>
Cc: oe-kbuild-all@lists.linux.dev
Subject: [rclaveau:b4/add-adla_npu-t7-vim4 12/12] drivers/accel/adla_legacy/kmd/drv/port/os/linux/adlak_os.c:156:26: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 2)' attribute to the declaration of 'adlak_os_printf'
Date: Wed, 09 Sep 2026 17:43:28 +0800 [thread overview]
Message-ID: <202609091724.MSVLRBVv-lkp@intel.com> (raw)
tree: https://github.com/rclaveau-tech/linux-khadas.git b4/add-adla_npu-t7-vim4
head: 3729dea89f4ad77930792d1afd34a3bac456c7a1
commit: 3729dea89f4ad77930792d1afd34a3bac456c7a1 [12/12] Temporary use Adla Legacy driver
config: arm64-allmodconfig (https://download.01.org/0day-ci/archive/20260909/202609091724.MSVLRBVv-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project 803252a70e326051a340e1a80b79cd10ed633e7f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260909/202609091724.MSVLRBVv-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609091724.MSVLRBVv-lkp@intel.com/
All warnings (new ones prefixed by >>):
error: unknown warning option '-Wno-suggest-attribute=format'; did you mean '-Wno-property-attribute-mismatch'? [-Werror,-Wunknown-warning-option]
In file included from drivers/accel/adla_legacy/kmd/drv/port/platform/linux/adlak_platform_device.c:76:
>> drivers/accel/adla_legacy/kmd/drv/port/platform/linux/adlak_fops.c:252:33: warning: variable 'net_reg_desc' is uninitialized when passed as a const pointer argument here [-Wuninitialized-const-pointer]
252 | cp_ret = copy_to_user(udata, &net_reg_desc,
| ^~~~~~~~~~~~
1 warning and 1 error generated.
--
error: unknown warning option '-Wno-suggest-attribute=format'; did you mean '-Wno-property-attribute-mismatch'? [-Werror,-Wunknown-warning-option]
>> drivers/accel/adla_legacy/kmd/drv/port/os/linux/adlak_os.c:156:26: warning: diagnostic behavior may be improved by adding the 'format(printf, 1, 2)' attribute to the declaration of 'adlak_os_printf' [-Wmissing-format-attribute]
156 | r = vprintk(format, args);
| ^
drivers/accel/adla_legacy/kmd/drv/port/adlak_os.h:56:7: note: 'adlak_os_printf' declared here
56 | int adlak_os_printf(const char *format, ...);
| ^
>> drivers/accel/adla_legacy/kmd/drv/port/os/linux/adlak_os.c:171:43: warning: diagnostic behavior may be improved by adding the 'format(printf, 3, 4)' attribute to the declaration of 'adlak_os_snprintf' [-Wmissing-format-attribute]
171 | cnt = vsnprintf(buffer, size, format, arg);
| ^
drivers/accel/adla_legacy/kmd/drv/port/adlak_os.h:57:7: note: 'adlak_os_snprintf' declared here
57 | int adlak_os_snprintf(char *buffer, ssize_t buf_size, const char *format, ...);
| ^
>> drivers/accel/adla_legacy/kmd/drv/port/os/linux/adlak_os.c:193:34: warning: diagnostic behavior may be improved by adding the 'format(printf, 2, 0)' attribute to the declaration of 'adlak_os_vasprintf' [-Wmissing-format-attribute]
186 | static char *adlak_os_vasprintf(gfp_t gfp, const char *fmt, va_list ap)
| __attribute__((format(printf, 2, 0)))
187 | {
188 | unsigned int len;
189 | char *p;
190 | va_list aq;
191 |
192 | va_copy(aq, ap);
193 | len = vsnprintf(NULL, 0, fmt, aq);
| ^
drivers/accel/adla_legacy/kmd/drv/port/os/linux/adlak_os.c:186:14: note: 'adlak_os_vasprintf' declared here
186 | static char *adlak_os_vasprintf(gfp_t gfp, const char *fmt, va_list ap)
| ^
>> drivers/accel/adla_legacy/kmd/drv/port/os/linux/adlak_os.c:221:37: warning: diagnostic behavior may be improved by adding the 'format(printf, 2, 3)' attribute to the declaration of 'adlak_os_asprintf' [-Wmissing-format-attribute]
221 | p = adlak_os_vasprintf(gfp, fmt, ap);
| ^
drivers/accel/adla_legacy/kmd/drv/port/adlak_os.h:58:7: note: 'adlak_os_asprintf' declared here
58 | char *adlak_os_asprintf(gfp_t gfp, const char *fmt, ...);
| ^
4 warnings and 1 error generated.
vim +156 drivers/accel/adla_legacy/kmd/drv/port/os/linux/adlak_os.c
149
150 int adlak_os_printf(const char *format, ...)
151 {
152 va_list args;
153 int r;
154
155 va_start(args, format);
> 156 r = vprintk(format, args);
157 //r = pr_info(format, args);
158 va_end(args);
159 return r;
160 }
161
162 int adlak_os_snprintf(char *buffer, ssize_t size, const char *format, ...)
163 {
164 int cnt;
165 va_list arg;
166
167 if (size <= 0)
168 return 0;
169
170 va_start(arg, format);
> 171 cnt = vsnprintf(buffer, size, format, arg);
172 va_end(arg);
173 return cnt;
174 }
175
176 /**
177 * adlak_os_vasprintf - Allocate resource managed space and format a string
178 * into that.
179 * @gfp: the GFP mask used in the devm_kmalloc() call when
180 * allocating memory
181 * @fmt: The printf()-style format string
182 * @ap: Arguments for the format string
183 * RETURNS:
184 * Pointer to allocated string on success, NULL on failure.
185 */
186 static char *adlak_os_vasprintf(gfp_t gfp, const char *fmt, va_list ap)
187 {
188 unsigned int len;
189 char *p;
190 va_list aq;
191
192 va_copy(aq, ap);
> 193 len = vsnprintf(NULL, 0, fmt, aq);
194 va_end(aq);
195
196 p = kmalloc(len + 1, gfp);
197 if (!p)
198 return NULL;
199
200 vsnprintf(p, len + 1, fmt, ap);
201
202 return p;
203 }
204
205 /*
206 * @brief Allocate resource managed space and format a string
207 * into that.
208 *
209 * @param gfp the GFP mask used in the devm_kmalloc() call when
210 * allocating memory
211 * @param fmt: The printf()-style format string
212 * @param ... Arguments for the format string
213 * @return char* Pointer to allocated string on success, NULL on failure.
214 */
215 char *adlak_os_asprintf(gfp_t gfp, const char *fmt, ...)
216 {
217 va_list ap;
218 char *p;
219
220 va_start(ap, fmt);
> 221 p = adlak_os_vasprintf(gfp, fmt, ap);
222 va_end(ap);
223
224 return p;
225 }
226
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-09-09 9:44 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=202609091724.MSVLRBVv-lkp@intel.com \
--to=lkp@intel.com \
--cc=linux-kernel-dev@aliel.fr \
--cc=oe-kbuild-all@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.