drivers/platform/x86/dell/dcdbas.c:80: warning: Function parameter or member 'size' not described in 'smi_data_buf_realloc'

From: kernel test robot
Date: Tue Dec 19 2023 - 12:37:56 EST

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Hi Mario,

First bad commit (maybe != root cause):

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2cf4f94d8e8646803f8fb0facf134b0cd7fb691a
commit: f1e1ea516721d1ea0b21327ff9e6cb2c2bb86e28 platform/x86: Move all dell drivers to their own subdirectory
date: 2 years, 10 months ago
config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20231220/202312200110.tXx7v823-lkp@xxxxxxxxx/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231220/202312200110.tXx7v823-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/202312200110.tXx7v823-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

>> drivers/platform/x86/dell/dcdbas.c:80: warning: Function parameter or member 'size' not described in 'smi_data_buf_realloc'
>> drivers/platform/x86/dell/dcdbas.c:271: warning: Function parameter or member 'smi_cmd' not described in 'dcdbas_smi_request'
>> drivers/platform/x86/dell/dcdbas.c:302: warning: Function parameter or member 'dev' not described in 'smi_request_store'
drivers/platform/x86/dell/dcdbas.c:302: warning: Function parameter or member 'attr' not described in 'smi_request_store'
drivers/platform/x86/dell/dcdbas.c:302: warning: Function parameter or member 'buf' not described in 'smi_request_store'
drivers/platform/x86/dell/dcdbas.c:302: warning: Function parameter or member 'count' not described in 'smi_request_store'
drivers/platform/x86/dell/dcdbas.c:603: warning: Function parameter or member 'nb' not described in 'dcdbas_reboot_notify'
drivers/platform/x86/dell/dcdbas.c:603: warning: Function parameter or member 'code' not described in 'dcdbas_reboot_notify'
drivers/platform/x86/dell/dcdbas.c:603: warning: Function parameter or member 'unused' not described in 'dcdbas_reboot_notify'

vim +80 drivers/platform/x86/dell/dcdbas.c

90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 75
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 76 /**
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 77 * smi_data_buf_realloc: grow SMI data buffer if needed
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 78 */
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 79 static int smi_data_buf_realloc(unsigned long size)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 @80 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 81 void *buf;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 82 dma_addr_t handle;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 83
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 84 if (smi_data_buf_size >= size)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 85 return 0;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 86
12c956c4f32e087 drivers/firmware/dcdbas.c Stuart Hayes 2018-09-26 87 if (size > max_smi_data_buf_size)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 88 return -EINVAL;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 89
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 90 /* new buffer is needed */
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 91 buf = dma_alloc_coherent(&dcdbas_pdev->dev, size, &handle, GFP_KERNEL);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 92 if (!buf) {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 93 dev_dbg(&dcdbas_pdev->dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 94 "%s: failed to allocate memory size %lu\n",
eecd58536a97502 drivers/firmware/dcdbas.c Harvey Harrison 2008-04-29 95 __func__, size);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 96 return -ENOMEM;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 97 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 98 /* memory zeroed by dma_alloc_coherent */
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 99
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 100 if (smi_data_buf)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 101 memcpy(buf, smi_data_buf, smi_data_buf_size);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 102
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 103 /* free any existing buffer */
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 104 smi_data_buf_free();
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 105
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 106 /* set up new buffer for use */
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 107 smi_data_buf = buf;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 108 smi_data_buf_handle = handle;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 109 smi_data_buf_phys_addr = (u32) virt_to_phys(buf);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 110 smi_data_buf_size = size;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 111
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 112 dev_dbg(&dcdbas_pdev->dev, "%s: phys: %x size: %lu\n",
eecd58536a97502 drivers/firmware/dcdbas.c Harvey Harrison 2008-04-29 113 __func__, smi_data_buf_phys_addr, smi_data_buf_size);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 114
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 115 return 0;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 116 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 117
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 118 static ssize_t smi_data_buf_phys_addr_show(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 119 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 120 char *buf)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 121 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 122 return sprintf(buf, "%x\n", smi_data_buf_phys_addr);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 123 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 124
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 125 static ssize_t smi_data_buf_size_show(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 126 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 127 char *buf)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 128 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 129 return sprintf(buf, "%lu\n", smi_data_buf_size);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 130 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 131
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 132 static ssize_t smi_data_buf_size_store(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 133 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 134 const char *buf, size_t count)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 135 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 136 unsigned long buf_size;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 137 ssize_t ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 138
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 139 buf_size = simple_strtoul(buf, NULL, 10);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 140
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 141 /* make sure SMI data buffer is at least buf_size */
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 142 mutex_lock(&smi_data_lock);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 143 ret = smi_data_buf_realloc(buf_size);
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 144 mutex_unlock(&smi_data_lock);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 145 if (ret)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 146 return ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 147
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 148 return count;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 149 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 150
2c3c8bea608866d drivers/firmware/dcdbas.c Chris Wright 2010-05-12 151 static ssize_t smi_data_read(struct file *filp, struct kobject *kobj,
91a6902958f0523 drivers/firmware/dcdbas.c Zhang Rui 2007-06-09 152 struct bin_attribute *bin_attr,
91a6902958f0523 drivers/firmware/dcdbas.c Zhang Rui 2007-06-09 153 char *buf, loff_t pos, size_t count)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 154 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 155 ssize_t ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 156
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 157 mutex_lock(&smi_data_lock);
abe19b7b822a8fd drivers/firmware/dcdbas.c Akinobu Mita 2008-07-25 158 ret = memory_read_from_buffer(buf, count, &pos, smi_data_buf,
abe19b7b822a8fd drivers/firmware/dcdbas.c Akinobu Mita 2008-07-25 159 smi_data_buf_size);
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 160 mutex_unlock(&smi_data_lock);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 161 return ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 162 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 163
2c3c8bea608866d drivers/firmware/dcdbas.c Chris Wright 2010-05-12 164 static ssize_t smi_data_write(struct file *filp, struct kobject *kobj,
91a6902958f0523 drivers/firmware/dcdbas.c Zhang Rui 2007-06-09 165 struct bin_attribute *bin_attr,
91a6902958f0523 drivers/firmware/dcdbas.c Zhang Rui 2007-06-09 166 char *buf, loff_t pos, size_t count)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 167 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 168 ssize_t ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 169
12c956c4f32e087 drivers/firmware/dcdbas.c Stuart Hayes 2018-09-26 170 if ((pos + count) > max_smi_data_buf_size)
b95936cb9267e4c drivers/firmware/dcdbas.c Doug Warzecha 2006-10-19 171 return -EINVAL;
b95936cb9267e4c drivers/firmware/dcdbas.c Doug Warzecha 2006-10-19 172
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 173 mutex_lock(&smi_data_lock);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 174
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 175 ret = smi_data_buf_realloc(pos + count);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 176 if (ret)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 177 goto out;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 178
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 179 memcpy(smi_data_buf + pos, buf, count);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 180 ret = count;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 181 out:
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 182 mutex_unlock(&smi_data_lock);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 183 return ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 184 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 185
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 186 static ssize_t host_control_action_show(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 187 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 188 char *buf)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 189 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 190 return sprintf(buf, "%u\n", host_control_action);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 191 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 192
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 193 static ssize_t host_control_action_store(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 194 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 195 const char *buf, size_t count)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 196 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 197 ssize_t ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 198
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 199 /* make sure buffer is available for host control command */
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 200 mutex_lock(&smi_data_lock);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 201 ret = smi_data_buf_realloc(sizeof(struct apm_cmd));
8ed965d612d9e9b drivers/firmware/dcdbas.c Arjan van de Ven 2006-03-23 202 mutex_unlock(&smi_data_lock);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 203 if (ret)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 204 return ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 205
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 206 host_control_action = simple_strtoul(buf, NULL, 10);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 207 return count;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 208 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 209
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 210 static ssize_t host_control_smi_type_show(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 211 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 212 char *buf)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 213 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 214 return sprintf(buf, "%u\n", host_control_smi_type);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 215 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 216
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 217 static ssize_t host_control_smi_type_store(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 218 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 219 const char *buf, size_t count)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 220 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 221 host_control_smi_type = simple_strtoul(buf, NULL, 10);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 222 return count;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 223 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 224
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 225 static ssize_t host_control_on_shutdown_show(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 226 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 227 char *buf)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 228 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 229 return sprintf(buf, "%u\n", host_control_on_shutdown);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 230 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 231
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 232 static ssize_t host_control_on_shutdown_store(struct device *dev,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 233 struct device_attribute *attr,
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 234 const char *buf, size_t count)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 235 {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 236 host_control_on_shutdown = simple_strtoul(buf, NULL, 10);
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 237 return count;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 238 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 239
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 240 static int raise_smi(void *par)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 241 {
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 242 struct smi_cmd *smi_cmd = par;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 243
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 244 if (smp_processor_id() != 0) {
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 245 dev_dbg(&dcdbas_pdev->dev, "%s: failed to get CPU 0\n",
eecd58536a97502 drivers/firmware/dcdbas.c Harvey Harrison 2008-04-29 246 __func__);
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 247 return -EBUSY;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 248 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 249
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 250 /* generate SMI */
dd65c736d1b5312 drivers/firmware/dcdbas.c Stuart Hayes 2011-03-02 251 /* inb to force posted write through and make SMI happen now */
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 252 asm volatile (
dd65c736d1b5312 drivers/firmware/dcdbas.c Stuart Hayes 2011-03-02 253 "outb %b0,%w1\n"
dd65c736d1b5312 drivers/firmware/dcdbas.c Stuart Hayes 2011-03-02 254 "inb %w1"
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 255 : /* no output args */
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 256 : "a" (smi_cmd->command_code),
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 257 "d" (smi_cmd->command_address),
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 258 "b" (smi_cmd->ebx),
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 259 "c" (smi_cmd->ecx)
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 260 : "memory"
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 261 );
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 262
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 263 return 0;
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 264 }
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 265 /**
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 266 * dcdbas_smi_request: generate SMI request
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 267 *
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 268 * Called with smi_data_lock.
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 269 */
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 270 int dcdbas_smi_request(struct smi_cmd *smi_cmd)
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 @271 {
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 272 int ret;
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 273
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 274 if (smi_cmd->magic != SMI_CMD_MAGIC) {
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 275 dev_info(&dcdbas_pdev->dev, "%s: invalid magic value\n",
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 276 __func__);
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 277 return -EBADR;
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 278 }
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 279
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 280 /* SMI requires CPU 0 */
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 281 get_online_cpus();
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 282 ret = smp_call_on_cpu(0, raise_smi, smi_cmd, true);
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 283 put_online_cpus();
e23f22b5cb9e44d drivers/firmware/dcdbas.c Juergen Gross 2016-08-29 284
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 285 return ret;
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 286 }
90563ec4129f14d drivers/firmware/dcdbas.c Doug Warzecha 2005-09-06 287

:::::: The code at line 80 was first introduced by commit
:::::: 90563ec4129f14d19f018240d1d3ff5c0e5e6392 [PATCH] dcdbas: add Dell Systems Management Base Driver with sysfs support

:::::: TO: Doug Warzecha <Douglas_Warzecha@xxxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxx>

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