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Date: Sun, 8 Jan 2023 05:52:17 +0800
From: kernel test robot <lkp@...el.com>
To: William Zhang <william.zhang@...adcom.com>,
Linux SPI List <linux-spi@...r.kernel.org>,
Broadcom Kernel List <bcm-kernel-feedback-list@...adcom.com>
Cc: oe-kbuild-all@...ts.linux.dev, anand.gore@...adcom.com,
tomer.yacoby@...adcom.com, dan.beygelman@...adcom.com,
joel.peshkin@...adcom.com, f.fainelli@...il.com,
jonas.gorski@...il.com, kursad.oney@...adcom.com, dregan@...l.com,
William Zhang <william.zhang@...adcom.com>,
Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 06/16] spi: bcm63xx-hsspi: Endianness fix for ARM based
SoC
Hi William,
I love your patch! Perhaps something to improve:
[auto build test WARNING on robh/for-next]
[also build test WARNING on broonie-spi/for-next krzk/for-next krzk-dt/for-next krzk-mem-ctrl/for-next linus/master v6.2-rc2 next-20230106]
[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/William-Zhang/dt-bindings-spi-Convert-bcm63xx-hsspi-bindings-to-json-schema/20230107-042320
base: https://git.kernel.org/pub/scm/linux/kernel/git/robh/linux.git for-next
patch link: https://lore.kernel.org/r/20230106200809.330769-7-william.zhang%40broadcom.com
patch subject: [PATCH 06/16] spi: bcm63xx-hsspi: Endianness fix for ARM based SoC
config: sh-randconfig-s031-20230108
compiler: sh4-linux-gcc (GCC) 12.1.0
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# apt-get install sparse
# sparse version: v0.6.4-39-gce1a6720-dirty
# https://github.com/intel-lab-lkp/linux/commit/8a82a44b50d88a27e55065e9f1bd75f0fccf479a
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review William-Zhang/dt-bindings-spi-Convert-bcm63xx-hsspi-bindings-to-json-schema/20230107-042320
git checkout 8a82a44b50d88a27e55065e9f1bd75f0fccf479a
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sh olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=sh SHELL=/bin/bash drivers/spi/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
sparse warnings: (new ones prefixed by >>)
>> drivers/spi/spi-bcm63xx-hsspi.c:197:17: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned short volatile [usertype] @@ got restricted __be16 [usertype] @@
drivers/spi/spi-bcm63xx-hsspi.c:197:17: sparse: expected unsigned short volatile [usertype]
drivers/spi/spi-bcm63xx-hsspi.c:197:17: sparse: got restricted __be16 [usertype]
vim +197 drivers/spi/spi-bcm63xx-hsspi.c
156
157 static int bcm63xx_hsspi_do_txrx(struct spi_device *spi, struct spi_transfer *t)
158 {
159 struct bcm63xx_hsspi *bs = spi_master_get_devdata(spi->master);
160 unsigned int chip_select = spi->chip_select;
161 u16 opcode = 0;
162 int pending = t->len;
163 int step_size = HSSPI_BUFFER_LEN;
164 const u8 *tx = t->tx_buf;
165 u8 *rx = t->rx_buf;
166
167 bcm63xx_hsspi_set_clk(bs, spi, t->speed_hz);
168 bcm63xx_hsspi_set_cs(bs, spi->chip_select, true);
169
170 if (tx && rx)
171 opcode = HSSPI_OP_READ_WRITE;
172 else if (tx)
173 opcode = HSSPI_OP_WRITE;
174 else if (rx)
175 opcode = HSSPI_OP_READ;
176
177 if (opcode != HSSPI_OP_READ)
178 step_size -= HSSPI_OPCODE_LEN;
179
180 if ((opcode == HSSPI_OP_READ && t->rx_nbits == SPI_NBITS_DUAL) ||
181 (opcode == HSSPI_OP_WRITE && t->tx_nbits == SPI_NBITS_DUAL))
182 opcode |= HSSPI_OP_MULTIBIT;
183
184 __raw_writel(1 << MODE_CTRL_MULTIDATA_WR_SIZE_SHIFT |
185 1 << MODE_CTRL_MULTIDATA_RD_SIZE_SHIFT | 0xff,
186 bs->regs + HSSPI_PROFILE_MODE_CTRL_REG(chip_select));
187
188 while (pending > 0) {
189 int curr_step = min_t(int, step_size, pending);
190
191 reinit_completion(&bs->done);
192 if (tx) {
193 memcpy_toio(bs->fifo + HSSPI_OPCODE_LEN, tx, curr_step);
194 tx += curr_step;
195 }
196
> 197 __raw_writew(cpu_to_be16(opcode | curr_step), bs->fifo);
198
199 /* enable interrupt */
200 __raw_writel(HSSPI_PINGx_CMD_DONE(0),
201 bs->regs + HSSPI_INT_MASK_REG);
202
203 /* start the transfer */
204 __raw_writel(!chip_select << PINGPONG_CMD_SS_SHIFT |
205 chip_select << PINGPONG_CMD_PROFILE_SHIFT |
206 PINGPONG_COMMAND_START_NOW,
207 bs->regs + HSSPI_PINGPONG_COMMAND_REG(0));
208
209 if (wait_for_completion_timeout(&bs->done, HZ) == 0) {
210 dev_err(&bs->pdev->dev, "transfer timed out!\n");
211 return -ETIMEDOUT;
212 }
213
214 if (rx) {
215 memcpy_fromio(rx, bs->fifo, curr_step);
216 rx += curr_step;
217 }
218
219 pending -= curr_step;
220 }
221
222 return 0;
223 }
224
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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