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SubjectRe: [PATCH v2] memstick: mspro_block: fix unused variable warning
Hi Anders,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.17-rc5]
[cannot apply to next-20180517]
[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/Anders-Roxell/memstick-mspro_block-fix-unused-variable-warning/20180514-202058
config: i386-randconfig-a0-05172018 (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/memstick/core/mspro_block.c: In function 'mspro_block_init_disk':
>> drivers/memstick/core/mspro_block.c:1180:6: error: 'host' undeclared (first use in this function)
if (host->dev.dma_mask && *(host->dev.dma_mask))
^
drivers/memstick/core/mspro_block.c:1180:6: note: each undeclared identifier is reported only once for each function it appears in

vim +/host +1180 drivers/memstick/core/mspro_block.c

baf8532a1 Alex Dubov 2008-02-09 1169
baf8532a1 Alex Dubov 2008-02-09 1170 static int mspro_block_init_disk(struct memstick_dev *card)
baf8532a1 Alex Dubov 2008-02-09 1171 {
baf8532a1 Alex Dubov 2008-02-09 1172 struct mspro_block_data *msb = memstick_get_drvdata(card);
baf8532a1 Alex Dubov 2008-02-09 1173 struct mspro_devinfo *dev_info = NULL;
baf8532a1 Alex Dubov 2008-02-09 1174 struct mspro_sys_info *sys_info = NULL;
baf8532a1 Alex Dubov 2008-02-09 1175 struct mspro_sys_attr *s_attr = NULL;
baf8532a1 Alex Dubov 2008-02-09 1176 int rc, disk_id;
baf8532a1 Alex Dubov 2008-02-09 1177 u64 limit = BLK_BOUNCE_HIGH;
baf8532a1 Alex Dubov 2008-02-09 1178 unsigned long capacity;
baf8532a1 Alex Dubov 2008-02-09 1179
c4c66cf17 Greg Kroah-Hartman 2008-03-04 @1180 if (host->dev.dma_mask && *(host->dev.dma_mask))
c4c66cf17 Greg Kroah-Hartman 2008-03-04 1181 limit = *(host->dev.dma_mask);
baf8532a1 Alex Dubov 2008-02-09 1182
baf8532a1 Alex Dubov 2008-02-09 1183 for (rc = 0; msb->attr_group.attrs[rc]; ++rc) {
baf8532a1 Alex Dubov 2008-02-09 1184 s_attr = mspro_from_sysfs_attr(msb->attr_group.attrs[rc]);
baf8532a1 Alex Dubov 2008-02-09 1185
baf8532a1 Alex Dubov 2008-02-09 1186 if (s_attr->id == MSPRO_BLOCK_ID_DEVINFO)
baf8532a1 Alex Dubov 2008-02-09 1187 dev_info = s_attr->data;
baf8532a1 Alex Dubov 2008-02-09 1188 else if (s_attr->id == MSPRO_BLOCK_ID_SYSINFO)
baf8532a1 Alex Dubov 2008-02-09 1189 sys_info = s_attr->data;
baf8532a1 Alex Dubov 2008-02-09 1190 }
baf8532a1 Alex Dubov 2008-02-09 1191
baf8532a1 Alex Dubov 2008-02-09 1192 if (!dev_info || !sys_info)
baf8532a1 Alex Dubov 2008-02-09 1193 return -ENODEV;
baf8532a1 Alex Dubov 2008-02-09 1194
baf8532a1 Alex Dubov 2008-02-09 1195 msb->cylinders = be16_to_cpu(dev_info->cylinders);
baf8532a1 Alex Dubov 2008-02-09 1196 msb->heads = be16_to_cpu(dev_info->heads);
baf8532a1 Alex Dubov 2008-02-09 1197 msb->sectors_per_track = be16_to_cpu(dev_info->sectors_per_track);
baf8532a1 Alex Dubov 2008-02-09 1198
baf8532a1 Alex Dubov 2008-02-09 1199 msb->page_size = be16_to_cpu(sys_info->unit_size);
baf8532a1 Alex Dubov 2008-02-09 1200
d8256d487 Alex Dubov 2011-01-12 1201 mutex_lock(&mspro_block_disk_lock);
7b51f4783 Tejun Heo 2013-02-27 1202 disk_id = idr_alloc(&mspro_block_disk_idr, card, 0, 256, GFP_KERNEL);
d8256d487 Alex Dubov 2011-01-12 1203 mutex_unlock(&mspro_block_disk_lock);
7b51f4783 Tejun Heo 2013-02-27 1204 if (disk_id < 0)
7b51f4783 Tejun Heo 2013-02-27 1205 return disk_id;
baf8532a1 Alex Dubov 2008-02-09 1206
8e82f8c34 Alex Dubov 2008-09-13 1207 msb->disk = alloc_disk(1 << MSPRO_BLOCK_PART_SHIFT);
baf8532a1 Alex Dubov 2008-02-09 1208 if (!msb->disk) {
baf8532a1 Alex Dubov 2008-02-09 1209 rc = -ENOMEM;
baf8532a1 Alex Dubov 2008-02-09 1210 goto out_release_id;
baf8532a1 Alex Dubov 2008-02-09 1211 }
baf8532a1 Alex Dubov 2008-02-09 1212
f1d826980 Alex Dubov 2008-07-25 1213 msb->queue = blk_init_queue(mspro_block_submit_req, &msb->q_lock);
baf8532a1 Alex Dubov 2008-02-09 1214 if (!msb->queue) {
baf8532a1 Alex Dubov 2008-02-09 1215 rc = -ENOMEM;
baf8532a1 Alex Dubov 2008-02-09 1216 goto out_put_disk;
baf8532a1 Alex Dubov 2008-02-09 1217 }
baf8532a1 Alex Dubov 2008-02-09 1218
baf8532a1 Alex Dubov 2008-02-09 1219 msb->queue->queuedata = card;
baf8532a1 Alex Dubov 2008-02-09 1220
baf8532a1 Alex Dubov 2008-02-09 1221 blk_queue_bounce_limit(msb->queue, limit);
086fa5ff0 Martin K. Petersen 2010-02-26 1222 blk_queue_max_hw_sectors(msb->queue, MSPRO_BLOCK_MAX_PAGES);
8a78362c4 Martin K. Petersen 2010-02-26 1223 blk_queue_max_segments(msb->queue, MSPRO_BLOCK_MAX_SEGS);
baf8532a1 Alex Dubov 2008-02-09 1224 blk_queue_max_segment_size(msb->queue,
baf8532a1 Alex Dubov 2008-02-09 1225 MSPRO_BLOCK_MAX_PAGES * msb->page_size);
baf8532a1 Alex Dubov 2008-02-09 1226
baf8532a1 Alex Dubov 2008-02-09 1227 msb->disk->major = major;
8e82f8c34 Alex Dubov 2008-09-13 1228 msb->disk->first_minor = disk_id << MSPRO_BLOCK_PART_SHIFT;
baf8532a1 Alex Dubov 2008-02-09 1229 msb->disk->fops = &ms_block_bdops;
baf8532a1 Alex Dubov 2008-02-09 1230 msb->usage_count = 1;
baf8532a1 Alex Dubov 2008-02-09 1231 msb->disk->private_data = msb;
baf8532a1 Alex Dubov 2008-02-09 1232 msb->disk->queue = msb->queue;
baf8532a1 Alex Dubov 2008-02-09 1233
baf8532a1 Alex Dubov 2008-02-09 1234 sprintf(msb->disk->disk_name, "mspblk%d", disk_id);
baf8532a1 Alex Dubov 2008-02-09 1235
e1defc4ff Martin K. Petersen 2009-05-22 1236 blk_queue_logical_block_size(msb->queue, msb->page_size);
baf8532a1 Alex Dubov 2008-02-09 1237
baf8532a1 Alex Dubov 2008-02-09 1238 capacity = be16_to_cpu(sys_info->user_block_count);
baf8532a1 Alex Dubov 2008-02-09 1239 capacity *= be16_to_cpu(sys_info->block_size);
baf8532a1 Alex Dubov 2008-02-09 1240 capacity *= msb->page_size >> 9;
baf8532a1 Alex Dubov 2008-02-09 1241 set_capacity(msb->disk, capacity);
baf8532a1 Alex Dubov 2008-02-09 1242 dev_dbg(&card->dev, "capacity set %ld\n", capacity);
baf8532a1 Alex Dubov 2008-02-09 1243
0d52c756a Dan Williams 2016-06-15 1244 device_add_disk(&card->dev, msb->disk);
baf8532a1 Alex Dubov 2008-02-09 1245 msb->active = 1;
baf8532a1 Alex Dubov 2008-02-09 1246 return 0;
baf8532a1 Alex Dubov 2008-02-09 1247
baf8532a1 Alex Dubov 2008-02-09 1248 out_put_disk:
baf8532a1 Alex Dubov 2008-02-09 1249 put_disk(msb->disk);
baf8532a1 Alex Dubov 2008-02-09 1250 out_release_id:
baf8532a1 Alex Dubov 2008-02-09 1251 mutex_lock(&mspro_block_disk_lock);
baf8532a1 Alex Dubov 2008-02-09 1252 idr_remove(&mspro_block_disk_idr, disk_id);
baf8532a1 Alex Dubov 2008-02-09 1253 mutex_unlock(&mspro_block_disk_lock);
baf8532a1 Alex Dubov 2008-02-09 1254 return rc;
baf8532a1 Alex Dubov 2008-02-09 1255 }
baf8532a1 Alex Dubov 2008-02-09 1256

:::::: The code at line 1180 was first introduced by commit
:::::: c4c66cf1787d408066fbfc69209185701f5df15f memstick: convert struct class_device to struct device

:::::: TO: Greg Kroah-Hartman <gregkh@suse.de>
:::::: CC: Greg Kroah-Hartman <gregkh@suse.de>

---
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