* [nbd168-wireless:mt76 58/62] drivers/net/wireless/mediatek/mt76/dma.c:249:49: warning: shift count >= width of type
@ 2023-12-06 23:10 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-12-06 23:10 UTC (permalink / raw)
To: Sujuan Chen; +Cc: llvm, oe-kbuild-all, Felix Fietkau, Rex Lu, Lorenzo Bianconi
tree: https://github.com/nbd168/wireless mt76
head: 131c05dd91da2a13df20d4e5671e7c90d510bf69
commit: 950aaa76922a903f2431d36e9093327dc0e8ff9c [58/62] wifi: mt76: mt7996: set DMA mask to 36 bits for boards with more than 4GB of RAM
config: i386-randconfig-012-20231207 (https://download.01.org/0day-ci/archive/20231207/202312070745.56ZYhRLd-lkp@intel.com/config)
compiler: clang version 16.0.4 (https://github.com/llvm/llvm-project.git ae42196bc493ffe877a7e3dff8be32035dea4d07)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231207/202312070745.56ZYhRLd-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/202312070745.56ZYhRLd-lkp@intel.com/
All warnings (new ones prefixed by >>):
>> drivers/net/wireless/mediatek/mt76/dma.c:249:49: warning: shift count >= width of type [-Wshift-count-overflow]
buf1 = FIELD_PREP(MT_DMA_CTL_SDP0_H, buf->addr >> 32);
^ ~~
include/linux/bitfield.h:114:33: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~
include/linux/bitfield.h:68:41: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ? \
^~~~
include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~
include/linux/compiler_types.h:435:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~
include/linux/compiler_types.h:423:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^~~~~~~~~
include/linux/compiler_types.h:415:9: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^~~~~~~~~
>> drivers/net/wireless/mediatek/mt76/dma.c:249:49: warning: shift count >= width of type [-Wshift-count-overflow]
buf1 = FIELD_PREP(MT_DMA_CTL_SDP0_H, buf->addr >> 32);
^ ~~
include/linux/bitfield.h:114:33: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~
include/linux/bitfield.h:69:39: note: expanded from macro '__BF_FIELD_CHECK'
~((_mask) >> __bf_shf(_mask)) & (_val) : 0, \
^~~~
include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~
include/linux/compiler_types.h:435:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~
include/linux/compiler_types.h:423:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^~~~~~~~~
include/linux/compiler_types.h:415:9: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^~~~~~~~~
>> drivers/net/wireless/mediatek/mt76/dma.c:249:49: warning: shift count >= width of type [-Wshift-count-overflow]
buf1 = FIELD_PREP(MT_DMA_CTL_SDP0_H, buf->addr >> 32);
^ ~~
include/linux/bitfield.h:115:20: note: expanded from macro 'FIELD_PREP'
((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask); \
^~~~
drivers/net/wireless/mediatek/mt76/dma.c:316:53: warning: shift count >= width of type [-Wshift-count-overflow]
info |= FIELD_PREP(MT_DMA_CTL_SDP0_H, buf[0].addr >> 32);
^ ~~
include/linux/bitfield.h:114:33: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~
include/linux/bitfield.h:68:41: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ? \
^~~~
include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~
include/linux/compiler_types.h:435:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~
include/linux/compiler_types.h:423:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^~~~~~~~~
include/linux/compiler_types.h:415:9: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^~~~~~~~~
drivers/net/wireless/mediatek/mt76/dma.c:316:53: warning: shift count >= width of type [-Wshift-count-overflow]
info |= FIELD_PREP(MT_DMA_CTL_SDP0_H, buf[0].addr >> 32);
^ ~~
include/linux/bitfield.h:114:33: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~
include/linux/bitfield.h:69:39: note: expanded from macro '__BF_FIELD_CHECK'
~((_mask) >> __bf_shf(_mask)) & (_val) : 0, \
^~~~
include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~
include/linux/compiler_types.h:435:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~
include/linux/compiler_types.h:423:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^~~~~~~~~
include/linux/compiler_types.h:415:9: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^~~~~~~~~
drivers/net/wireless/mediatek/mt76/dma.c:316:53: warning: shift count >= width of type [-Wshift-count-overflow]
info |= FIELD_PREP(MT_DMA_CTL_SDP0_H, buf[0].addr >> 32);
^ ~~
include/linux/bitfield.h:115:20: note: expanded from macro 'FIELD_PREP'
((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask); \
^~~~
drivers/net/wireless/mediatek/mt76/dma.c:323:21: warning: shift count >= width of type [-Wshift-count-overflow]
buf[1].addr >> 32);
^ ~~
include/linux/bitfield.h:114:33: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~
include/linux/bitfield.h:68:41: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(__builtin_constant_p(_val) ? \
^~~~
include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~
include/linux/compiler_types.h:435:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~
include/linux/compiler_types.h:423:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^~~~~~~~~
include/linux/compiler_types.h:415:9: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^~~~~~~~~
drivers/net/wireless/mediatek/mt76/dma.c:323:21: warning: shift count >= width of type [-Wshift-count-overflow]
buf[1].addr >> 32);
^ ~~
include/linux/bitfield.h:114:33: note: expanded from macro 'FIELD_PREP'
__BF_FIELD_CHECK(_mask, 0ULL, _val, "FIELD_PREP: "); \
^~~~
include/linux/bitfield.h:69:39: note: expanded from macro '__BF_FIELD_CHECK'
~((_mask) >> __bf_shf(_mask)) & (_val) : 0, \
^~~~
include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^~~~
include/linux/compiler_types.h:435:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^~~~~~~~~
include/linux/compiler_types.h:423:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^~~~~~~~~
include/linux/compiler_types.h:415:9: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^~~~~~~~~
drivers/net/wireless/mediatek/mt76/dma.c:323:21: warning: shift count >= width of type [-Wshift-count-overflow]
buf[1].addr >> 32);
^ ~~
include/linux/bitfield.h:115:20: note: expanded from macro 'FIELD_PREP'
((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask); \
vim +249 drivers/net/wireless/mediatek/mt76/dma.c
227
228 static int
229 mt76_dma_add_rx_buf(struct mt76_dev *dev, struct mt76_queue *q,
230 struct mt76_queue_buf *buf, void *data)
231 {
232 struct mt76_queue_entry *entry = &q->entry[q->head];
233 struct mt76_txwi_cache *txwi = NULL;
234 struct mt76_desc *desc;
235 int idx = q->head;
236 u32 buf1, ctrl;
237 int rx_token;
238
239 if (mt76_queue_is_wed_rro_ind(q)) {
240 struct mt76_wed_rro_desc *rro_desc;
241
242 rro_desc = (struct mt76_wed_rro_desc *)q->desc;
243 data = &rro_desc[q->head];
244 goto done;
245 }
246
247 desc = &q->desc[q->head];
248 ctrl = FIELD_PREP(MT_DMA_CTL_SD_LEN0, buf[0].len);
> 249 buf1 = FIELD_PREP(MT_DMA_CTL_SDP0_H, buf->addr >> 32);
250
251 if (mt76_queue_is_wed_rx(q)) {
252 txwi = mt76_get_rxwi(dev);
253 if (!txwi)
254 return -ENOMEM;
255
256 rx_token = mt76_rx_token_consume(dev, data, txwi, buf->addr);
257 if (rx_token < 0) {
258 mt76_put_rxwi(dev, txwi);
259 return -ENOMEM;
260 }
261
262 buf1 |= FIELD_PREP(MT_DMA_CTL_TOKEN, rx_token);
263 ctrl |= MT_DMA_CTL_TO_HOST;
264 }
265
266 WRITE_ONCE(desc->buf0, cpu_to_le32(buf->addr));
267 WRITE_ONCE(desc->buf1, cpu_to_le32(buf1));
268 WRITE_ONCE(desc->ctrl, cpu_to_le32(ctrl));
269 WRITE_ONCE(desc->info, 0);
270
271 done:
272 entry->dma_addr[0] = buf->addr;
273 entry->dma_len[0] = buf->len;
274 entry->txwi = txwi;
275 entry->buf = data;
276 entry->wcid = 0xffff;
277 entry->skip_buf1 = true;
278 q->head = (q->head + 1) % q->ndesc;
279 q->queued++;
280
281 return idx;
282 }
283
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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