drivers/i2c/busses/i2c-tegra.c:297: warning: Function parameter or member 'dma_dev' not described in 'tegra_i2c_dev'
From: kernel test robot
Date: Thu Aug 17 2023 - 03:01:52 EST
Hi Thierry,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 4853c74bd7ab7fdb83f319bd9ace8a08c031e9b6
commit: cdbf26251d3b35c4ccaea0c3a6de4318f727d3d2 i2c: tegra: Allocate DMA memory for DMA engine
date: 10 months ago
config: sparc-randconfig-r014-20230817 (https://download.01.org/0day-ci/archive/20230817/202308171405.qdGAJxjf-lkp@xxxxxxxxx/config)
compiler: sparc-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230817/202308171405.qdGAJxjf-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/202308171405.qdGAJxjf-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
>> drivers/i2c/busses/i2c-tegra.c:297: warning: Function parameter or member 'dma_dev' not described in 'tegra_i2c_dev'
vim +297 drivers/i2c/busses/i2c-tegra.c
6ad068ed63100f Laxman Dewangan 2012-08-19 228
db811ca0f48578 Colin Cross 2011-02-20 229 /**
c990bbafdb11c6 Thierry Reding 2018-12-17 230 * struct tegra_i2c_dev - per device I2C context
db811ca0f48578 Colin Cross 2011-02-20 231 * @dev: device reference for power management
c990bbafdb11c6 Thierry Reding 2018-12-17 232 * @hw: Tegra I2C HW feature
c990bbafdb11c6 Thierry Reding 2018-12-17 233 * @adapter: core I2C layer adapter information
c990bbafdb11c6 Thierry Reding 2018-12-17 234 * @div_clk: clock reference for div clock of I2C controller
586a97d907ac34 Dmitry Osipenko 2020-09-30 235 * @clocks: array of I2C controller clocks
586a97d907ac34 Dmitry Osipenko 2020-09-30 236 * @nclocks: number of clocks in the array
0604ee4aefa20f Thierry Reding 2018-12-17 237 * @rst: reset control for the I2C controller
db811ca0f48578 Colin Cross 2011-02-20 238 * @base: ioremapped registers cookie
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 239 * @base_phys: physical base address of the I2C controller
c990bbafdb11c6 Thierry Reding 2018-12-17 240 * @cont_id: I2C controller ID, used for packet header
c990bbafdb11c6 Thierry Reding 2018-12-17 241 * @irq: IRQ number of transfer complete interrupt
c990bbafdb11c6 Thierry Reding 2018-12-17 242 * @is_dvc: identifies the DVC I2C controller, has a different register layout
c73178b93754ed Thierry Reding 2019-06-07 243 * @is_vi: identifies the VI I2C controller, has a different register layout
db811ca0f48578 Colin Cross 2011-02-20 244 * @msg_complete: transfer completion notifier
db811ca0f48578 Colin Cross 2011-02-20 245 * @msg_err: error code for completed message
db811ca0f48578 Colin Cross 2011-02-20 246 * @msg_buf: pointer to current message data
db811ca0f48578 Colin Cross 2011-02-20 247 * @msg_buf_remaining: size of unsent data in the message buffer
94a5573f0719cf Dmitry Osipenko 2020-09-30 248 * @msg_read: indicates that the transfer is a read access
50665d58db052b Akhil R 2021-12-10 249 * @timings: i2c timings information like bus frequency
a99042e7d9fb5c Dmitry Osipenko 2020-09-30 250 * @multimaster_mode: indicates that I2C controller is in multi-master mode
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 251 * @tx_dma_chan: DMA transmit channel
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 252 * @rx_dma_chan: DMA receive channel
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 253 * @dma_phys: handle to DMA resources
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 254 * @dma_buf: pointer to allocated DMA buffer
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 255 * @dma_buf_size: DMA buffer size
a99042e7d9fb5c Dmitry Osipenko 2020-09-30 256 * @dma_mode: indicates active DMA transfer
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 257 * @dma_complete: DMA completion notifier
a99042e7d9fb5c Dmitry Osipenko 2020-09-30 258 * @atomic_mode: indicates active atomic transfer
db811ca0f48578 Colin Cross 2011-02-20 259 */
db811ca0f48578 Colin Cross 2011-02-20 260 struct tegra_i2c_dev {
db811ca0f48578 Colin Cross 2011-02-20 261 struct device *dev;
db811ca0f48578 Colin Cross 2011-02-20 262 struct i2c_adapter adapter;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 263
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 264 const struct tegra_i2c_hw_feature *hw;
dda9d6a8262cb1 Stephen Warren 2013-11-06 265 struct reset_control *rst;
f1c2ff98065dce Dmitry Osipenko 2020-09-30 266 unsigned int cont_id;
f1c2ff98065dce Dmitry Osipenko 2020-09-30 267 unsigned int irq;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 268
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 269 phys_addr_t base_phys;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 270 void __iomem *base;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 271
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 272 struct clk_bulk_data clocks[2];
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 273 unsigned int nclocks;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 274
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 275 struct clk *div_clk;
50665d58db052b Akhil R 2021-12-10 276 struct i2c_timings timings;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 277
db811ca0f48578 Colin Cross 2011-02-20 278 struct completion msg_complete;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 279 size_t msg_buf_remaining;
db811ca0f48578 Colin Cross 2011-02-20 280 int msg_err;
db811ca0f48578 Colin Cross 2011-02-20 281 u8 *msg_buf;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 282
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 283 struct completion dma_complete;
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 284 struct dma_chan *tx_dma_chan;
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 285 struct dma_chan *rx_dma_chan;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 286 unsigned int dma_buf_size;
cdbf26251d3b35 Thierry Reding 2022-10-20 287 struct device *dma_dev;
86c92b9965ff17 Sowjanya Komatineni 2019-02-12 288 dma_addr_t dma_phys;
4be62340f3ce62 Dmitry Osipenko 2020-09-30 289 void *dma_buf;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 290
a99042e7d9fb5c Dmitry Osipenko 2020-09-30 291 bool multimaster_mode;
a99042e7d9fb5c Dmitry Osipenko 2020-09-30 292 bool atomic_mode;
a99042e7d9fb5c Dmitry Osipenko 2020-09-30 293 bool dma_mode;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 294 bool msg_read;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 295 bool is_dvc;
89e3748acd0bf6 Dmitry Osipenko 2020-09-30 296 bool is_vi;
db811ca0f48578 Colin Cross 2011-02-20 @297 };
db811ca0f48578 Colin Cross 2011-02-20 298
:::::: The code at line 297 was first introduced by commit
:::::: db811ca0f48578f9940f49f284ac81e336b264ad i2c: tegra: Add i2c support
:::::: TO: Colin Cross <ccross@xxxxxxxxxxx>
:::::: CC: Ben Dooks <ben-linux@xxxxxxxxx>
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