From: kbuild test robot <lkp@intel.com>
Cc: kbuild-all@01.org, linus.walleij@linaro.org,
andy.shevchenko@gmail.com, linux-gpio@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
William Breathitt Gray <vilhelm.gray@gmail.com>
Subject: Re: [PATCH v2 5/8] gpio: 104-dio-48e: Implement get_multiple callback
Date: Sat, 17 Mar 2018 23:47:13 +0800 [thread overview]
Message-ID: <201803172351.MjN7ipCz%fengguang.wu@intel.com> (raw)
In-Reply-To: <d31637cb701ecf556515539fd40e7098e0c99bfd.1521128287.git.vilhelm.gray@gmail.com>
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Hi William,
I love your patch! Yet something to improve:
[auto build test ERROR on v4.16-rc4]
[also build test ERROR on next-20180316]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/William-Breathitt-Gray/Implement-get_multiple-for-ACCES-and-PC-104-drivers/20180317-224135
config: i386-randconfig-a0-201810 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
drivers/gpio/gpio-104-dio-48e.c: In function 'dio48e_gpio_get_multiple':
>> drivers/gpio/gpio-104-dio-48e.c:214:3: error: 'word_mask' undeclared (first use in this function)
word_mask = mask[word_index] & (port_mask << word_offset);
^
drivers/gpio/gpio-104-dio-48e.c:214:3: note: each undeclared identifier is reported only once for each function it appears in
drivers/gpio/gpio-104-dio-48e.c:195:16: warning: unused variable 'mask_word' [-Wunused-variable]
unsigned long mask_word;
^
vim +/word_mask +214 drivers/gpio/gpio-104-dio-48e.c
184
185 static int dio48e_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask,
186 unsigned long *bits)
187 {
188 struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip);
189 size_t i;
190 const size_t ports[] = { 0, 1, 2, 4, 5, 6 };
191 const unsigned int gpio_reg_size = 8;
192 unsigned int bits_offset;
193 size_t word_index;
194 unsigned int word_offset;
195 unsigned long mask_word;
196 const unsigned long port_mask = GENMASK(gpio_reg_size, 0);
197 unsigned long port_state;
198
199 /* clear bits array to a clean slate */
200 bitmap_zero(bits, chip->ngpio);
201
202 /* get bits are evaluated a gpio port register at a time */
203 for (i = 0; i < ARRAY_SIZE(ports); i++) {
204 /* gpio offset in bits array */
205 bits_offset = i * gpio_reg_size;
206
207 /* word index for bits array */
208 word_index = BIT_WORD(bits_offset);
209
210 /* gpio offset within current word of bits array */
211 word_offset = bits_offset % BITS_PER_LONG;
212
213 /* mask of get bits for current gpio within current word */
> 214 word_mask = mask[word_index] & (port_mask << word_offset);
215 if (!word_mask) {
216 /* no get bits in this port so skip to next one */
217 continue;
218 }
219
220 /* read bits from current gpio port */
221 port_state = inb(dio48egpio->base + ports[i]);
222
223 /* store acquired bits at respective bits array offset */
224 bits[word_index] |= port_state << word_offset;
225 }
226
227 return 0;
228 }
229
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
[-- Attachment #2: .config.gz --]
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WARNING: multiple messages have this Message-ID (diff)
From: kbuild test robot <lkp@intel.com>
To: William Breathitt Gray <vilhelm.gray@gmail.com>
Cc: kbuild-all@01.org, linus.walleij@linaro.org,
andy.shevchenko@gmail.com, linux-gpio@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-iio@vger.kernel.org,
William Breathitt Gray <vilhelm.gray@gmail.com>
Subject: Re: [PATCH v2 5/8] gpio: 104-dio-48e: Implement get_multiple callback
Date: Sat, 17 Mar 2018 23:47:13 +0800 [thread overview]
Message-ID: <201803172351.MjN7ipCz%fengguang.wu@intel.com> (raw)
In-Reply-To: <d31637cb701ecf556515539fd40e7098e0c99bfd.1521128287.git.vilhelm.gray@gmail.com>
[-- Attachment #1: Type: text/plain, Size: 2983 bytes --]
Hi William,
I love your patch! Yet something to improve:
[auto build test ERROR on v4.16-rc4]
[also build test ERROR on next-20180316]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
url: https://github.com/0day-ci/linux/commits/William-Breathitt-Gray/Implement-get_multiple-for-ACCES-and-PC-104-drivers/20180317-224135
config: i386-randconfig-a0-201810 (attached as .config)
compiler: gcc-4.9 (Debian 4.9.4-2) 4.9.4
reproduce:
# save the attached .config to linux build tree
make ARCH=i386
All errors (new ones prefixed by >>):
drivers/gpio/gpio-104-dio-48e.c: In function 'dio48e_gpio_get_multiple':
>> drivers/gpio/gpio-104-dio-48e.c:214:3: error: 'word_mask' undeclared (first use in this function)
word_mask = mask[word_index] & (port_mask << word_offset);
^
drivers/gpio/gpio-104-dio-48e.c:214:3: note: each undeclared identifier is reported only once for each function it appears in
drivers/gpio/gpio-104-dio-48e.c:195:16: warning: unused variable 'mask_word' [-Wunused-variable]
unsigned long mask_word;
^
vim +/word_mask +214 drivers/gpio/gpio-104-dio-48e.c
184
185 static int dio48e_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask,
186 unsigned long *bits)
187 {
188 struct dio48e_gpio *const dio48egpio = gpiochip_get_data(chip);
189 size_t i;
190 const size_t ports[] = { 0, 1, 2, 4, 5, 6 };
191 const unsigned int gpio_reg_size = 8;
192 unsigned int bits_offset;
193 size_t word_index;
194 unsigned int word_offset;
195 unsigned long mask_word;
196 const unsigned long port_mask = GENMASK(gpio_reg_size, 0);
197 unsigned long port_state;
198
199 /* clear bits array to a clean slate */
200 bitmap_zero(bits, chip->ngpio);
201
202 /* get bits are evaluated a gpio port register at a time */
203 for (i = 0; i < ARRAY_SIZE(ports); i++) {
204 /* gpio offset in bits array */
205 bits_offset = i * gpio_reg_size;
206
207 /* word index for bits array */
208 word_index = BIT_WORD(bits_offset);
209
210 /* gpio offset within current word of bits array */
211 word_offset = bits_offset % BITS_PER_LONG;
212
213 /* mask of get bits for current gpio within current word */
> 214 word_mask = mask[word_index] & (port_mask << word_offset);
215 if (!word_mask) {
216 /* no get bits in this port so skip to next one */
217 continue;
218 }
219
220 /* read bits from current gpio port */
221 port_state = inb(dio48egpio->base + ports[i]);
222
223 /* store acquired bits at respective bits array offset */
224 bits[word_index] |= port_state << word_offset;
225 }
226
227 return 0;
228 }
229
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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next prev parent reply other threads:[~2018-03-17 15:47 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-15 15:46 [PATCH v2 0/8] Implement get_multiple for ACCES and PC/104 drivers William Breathitt Gray
2018-03-15 15:46 ` [PATCH v2 1/8] iio: stx104: Implement get_multiple callback William Breathitt Gray
2018-03-15 15:46 ` [PATCH v2 2/8] gpio: 104-idio-16: " William Breathitt Gray
2018-03-15 15:47 ` [PATCH v2 3/8] gpio: pci-idio-16: " William Breathitt Gray
2018-03-17 19:16 ` kbuild test robot
2018-03-17 19:16 ` kbuild test robot
2018-03-15 15:52 ` [PATCH v2 4/8] gpio: pcie-idio-24: Implement get_multiple/set_multiple callbacks William Breathitt Gray
2018-03-17 21:01 ` kbuild test robot
2018-03-17 21:01 ` kbuild test robot
2018-03-15 15:53 ` [PATCH v2 5/8] gpio: 104-dio-48e: Implement get_multiple callback William Breathitt Gray
2018-03-17 15:47 ` kbuild test robot [this message]
2018-03-17 15:47 ` kbuild test robot
2018-03-15 15:53 ` [PATCH v2 6/8] gpio: 104-idi-48: " William Breathitt Gray
2018-03-17 15:13 ` kbuild test robot
2018-03-17 15:13 ` kbuild test robot
2018-03-15 15:53 ` [PATCH v2 7/8] gpio: gpio-mm: " William Breathitt Gray
2018-03-15 15:53 ` [PATCH v2 8/8] gpio: ws16c48: " William Breathitt Gray
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