tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: ebe96538f4817c765690e28fcd33dc1da1504d26
commit: 5cc596c66fe7c725ec049ae2093e7242034c97d6 [7177/9424] [media] i2c: Make
all i2c devices visible if COMPILE_TEST=y
reproduce:
# apt-get install sparse
git checkout 5cc596c66fe7c725ec049ae2093e7242034c97d6
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> drivers/media/i2c/s5c73m3/s5c73m3-core.c:170:39: sparse: incorrect type in
>> argument 1 (different base types)
drivers/media/i2c/s5c73m3/s5c73m3-core.c:170:39: expected restricted
__be16 const [usertype] *p
drivers/media/i2c/s5c73m3/s5c73m3-core.c:170:39: got unsigned short
[usertype] *<noident>
vim +170 drivers/media/i2c/s5c73m3/s5c73m3-core.c
cac47f18 Andrzej Hajda 2012-11-22 154 .flags = 0,
cac47f18 Andrzej Hajda 2012-11-22 155 .len =
sizeof(wbuf),
cac47f18 Andrzej Hajda 2012-11-22 156 .buf = wbuf
cac47f18 Andrzej Hajda 2012-11-22 157 }, {
cac47f18 Andrzej Hajda 2012-11-22 158 .addr =
client->addr,
cac47f18 Andrzej Hajda 2012-11-22 159 .flags =
I2C_M_RD,
cac47f18 Andrzej Hajda 2012-11-22 160 .len =
sizeof(rbuf),
cac47f18 Andrzej Hajda 2012-11-22 161 .buf = rbuf
cac47f18 Andrzej Hajda 2012-11-22 162 }
cac47f18 Andrzej Hajda 2012-11-22 163 };
cac47f18 Andrzej Hajda 2012-11-22 164 /*
cac47f18 Andrzej Hajda 2012-11-22 165 * Issue repeated START after
writing 2 address bytes and
cac47f18 Andrzej Hajda 2012-11-22 166 * just one STOP only after
reading the data bytes.
cac47f18 Andrzej Hajda 2012-11-22 167 */
cac47f18 Andrzej Hajda 2012-11-22 168 ret =
i2c_transfer(client->adapter, msg, 2);
cac47f18 Andrzej Hajda 2012-11-22 169 if (ret == 2) {
cac47f18 Andrzej Hajda 2012-11-22 @170 *data =
be16_to_cpup((u16 *)rbuf);
cac47f18 Andrzej Hajda 2012-11-22 171 v4l2_dbg(4,
s5c73m3_dbg, client,
cac47f18 Andrzej Hajda 2012-11-22 172 "%s: addr:
0x%04x, data: 0x%04x\n",
cac47f18 Andrzej Hajda 2012-11-22 173 __func__,
addr, *data);
cac47f18 Andrzej Hajda 2012-11-22 174 return 0;
cac47f18 Andrzej Hajda 2012-11-22 175 }
cac47f18 Andrzej Hajda 2012-11-22 176
cac47f18 Andrzej Hajda 2012-11-22 177 v4l2_err(client, "I2C read
failed: addr: %04x, (%d)\n", addr, ret);
cac47f18 Andrzej Hajda 2012-11-22 178
:::::: The code at line 170 was first introduced by commit
:::::: cac47f1822fcb97018e24b05a7fb31f11a6bc28c [media] V4L: Add S5C73M3 camera
driver
:::::: TO: Andrzej Hajda <[email protected]>
:::::: CC: Mauro Carvalho Chehab <[email protected]>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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