From: kernel test robot <lkp@intel.com>
To: kbuild@lists.01.org
Subject: [linux-next:master 2767/4301] drivers/net/dsa/qca8k.c:2315:44: warning: Boolean result is used in bitwise operation. Clarify expression with parentheses. [clarifyCondition]
Date: Wed, 01 Dec 2021 07:21:46 +0800 [thread overview]
Message-ID: <202112010705.Ktp6ZPt1-lkp@intel.com> (raw)
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CC: kbuild-all(a)lists.01.org
CC: Linux Memory Management List <linux-mm@kvack.org>
TO: Ansuel Smith <ansuelsmth@gmail.com>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 34f255a1e91ab44ff8926cf8294ff9144e62e861
commit: def975307c01191b6f0170048c3724b0ed3348af [2767/4301] net: dsa: qca8k: add LAG support
:::::: branch date: 15 hours ago
:::::: commit date: 7 days ago
compiler: mipsel-linux-gcc (GCC) 11.2.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
cppcheck possible warnings: (new ones prefixed by >>, may not real problems)
>> drivers/net/dsa/qca8k.c:2315:44: warning: Boolean result is used in bitwise operation. Clarify expression with parentheses. [clarifyCondition]
!val << QCA8K_REG_GOL_TRUNK_SHIFT(id) |
^
drivers/net/dsa/qca8k.c:2353:61: warning: Boolean result is used in bitwise operation. Clarify expression with parentheses. [clarifyCondition]
!delete << QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i) |
^
>> drivers/net/dsa/qca8k.c:693:52: warning: Uninitialized variable: val [uninitvar]
ret = read_poll_timeout(qca8k_mii_read32, ret1, !(val & mask), 0,
^
>> drivers/net/usb/lan78xx.c:4752:3: warning: Variable 'mask_index' is modified but its new value is never used. [unreadVariable]
mask_index++;
^
vim +2315 drivers/net/dsa/qca8k.c
def975307c0119 Ansuel Smith 2021-11-23 2287
def975307c0119 Ansuel Smith 2021-11-23 2288 static int
def975307c0119 Ansuel Smith 2021-11-23 2289 qca8k_lag_refresh_portmap(struct dsa_switch *ds, int port,
def975307c0119 Ansuel Smith 2021-11-23 2290 struct net_device *lag, bool delete)
def975307c0119 Ansuel Smith 2021-11-23 2291 {
def975307c0119 Ansuel Smith 2021-11-23 2292 struct qca8k_priv *priv = ds->priv;
def975307c0119 Ansuel Smith 2021-11-23 2293 int ret, id, i;
def975307c0119 Ansuel Smith 2021-11-23 2294 u32 val;
def975307c0119 Ansuel Smith 2021-11-23 2295
def975307c0119 Ansuel Smith 2021-11-23 2296 id = dsa_lag_id(ds->dst, lag);
def975307c0119 Ansuel Smith 2021-11-23 2297
def975307c0119 Ansuel Smith 2021-11-23 2298 /* Read current port member */
def975307c0119 Ansuel Smith 2021-11-23 2299 ret = regmap_read(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL0, &val);
def975307c0119 Ansuel Smith 2021-11-23 2300 if (ret)
def975307c0119 Ansuel Smith 2021-11-23 2301 return ret;
def975307c0119 Ansuel Smith 2021-11-23 2302
def975307c0119 Ansuel Smith 2021-11-23 2303 /* Shift val to the correct trunk */
def975307c0119 Ansuel Smith 2021-11-23 2304 val >>= QCA8K_REG_GOL_TRUNK_SHIFT(id);
def975307c0119 Ansuel Smith 2021-11-23 2305 val &= QCA8K_REG_GOL_TRUNK_MEMBER_MASK;
def975307c0119 Ansuel Smith 2021-11-23 2306 if (delete)
def975307c0119 Ansuel Smith 2021-11-23 2307 val &= ~BIT(port);
def975307c0119 Ansuel Smith 2021-11-23 2308 else
def975307c0119 Ansuel Smith 2021-11-23 2309 val |= BIT(port);
def975307c0119 Ansuel Smith 2021-11-23 2310
def975307c0119 Ansuel Smith 2021-11-23 2311 /* Update port member. With empty portmap disable trunk */
def975307c0119 Ansuel Smith 2021-11-23 2312 ret = regmap_update_bits(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL0,
def975307c0119 Ansuel Smith 2021-11-23 2313 QCA8K_REG_GOL_TRUNK_MEMBER(id) |
def975307c0119 Ansuel Smith 2021-11-23 2314 QCA8K_REG_GOL_TRUNK_EN(id),
def975307c0119 Ansuel Smith 2021-11-23 @2315 !val << QCA8K_REG_GOL_TRUNK_SHIFT(id) |
def975307c0119 Ansuel Smith 2021-11-23 2316 val << QCA8K_REG_GOL_TRUNK_SHIFT(id));
def975307c0119 Ansuel Smith 2021-11-23 2317
def975307c0119 Ansuel Smith 2021-11-23 2318 /* Search empty member if adding or port on deleting */
def975307c0119 Ansuel Smith 2021-11-23 2319 for (i = 0; i < QCA8K_NUM_PORTS_FOR_LAG; i++) {
def975307c0119 Ansuel Smith 2021-11-23 2320 ret = regmap_read(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL(id), &val);
def975307c0119 Ansuel Smith 2021-11-23 2321 if (ret)
def975307c0119 Ansuel Smith 2021-11-23 2322 return ret;
def975307c0119 Ansuel Smith 2021-11-23 2323
def975307c0119 Ansuel Smith 2021-11-23 2324 val >>= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i);
def975307c0119 Ansuel Smith 2021-11-23 2325 val &= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_MASK;
def975307c0119 Ansuel Smith 2021-11-23 2326
def975307c0119 Ansuel Smith 2021-11-23 2327 if (delete) {
def975307c0119 Ansuel Smith 2021-11-23 2328 /* If port flagged to be disabled assume this member is
def975307c0119 Ansuel Smith 2021-11-23 2329 * empty
def975307c0119 Ansuel Smith 2021-11-23 2330 */
def975307c0119 Ansuel Smith 2021-11-23 2331 if (val != QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN_MASK)
def975307c0119 Ansuel Smith 2021-11-23 2332 continue;
def975307c0119 Ansuel Smith 2021-11-23 2333
def975307c0119 Ansuel Smith 2021-11-23 2334 val &= QCA8K_REG_GOL_TRUNK_ID_MEM_ID_PORT_MASK;
def975307c0119 Ansuel Smith 2021-11-23 2335 if (val != port)
def975307c0119 Ansuel Smith 2021-11-23 2336 continue;
def975307c0119 Ansuel Smith 2021-11-23 2337 } else {
def975307c0119 Ansuel Smith 2021-11-23 2338 /* If port flagged to be enabled assume this member is
def975307c0119 Ansuel Smith 2021-11-23 2339 * already set
def975307c0119 Ansuel Smith 2021-11-23 2340 */
def975307c0119 Ansuel Smith 2021-11-23 2341 if (val == QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN_MASK)
def975307c0119 Ansuel Smith 2021-11-23 2342 continue;
def975307c0119 Ansuel Smith 2021-11-23 2343 }
def975307c0119 Ansuel Smith 2021-11-23 2344
def975307c0119 Ansuel Smith 2021-11-23 2345 /* We have found the member to add/remove */
def975307c0119 Ansuel Smith 2021-11-23 2346 break;
def975307c0119 Ansuel Smith 2021-11-23 2347 }
def975307c0119 Ansuel Smith 2021-11-23 2348
def975307c0119 Ansuel Smith 2021-11-23 2349 /* Set port in the correct port mask or disable port if in delete mode */
def975307c0119 Ansuel Smith 2021-11-23 2350 return regmap_update_bits(priv->regmap, QCA8K_REG_GOL_TRUNK_CTRL(id),
def975307c0119 Ansuel Smith 2021-11-23 2351 QCA8K_REG_GOL_TRUNK_ID_MEM_ID_EN(id, i) |
def975307c0119 Ansuel Smith 2021-11-23 2352 QCA8K_REG_GOL_TRUNK_ID_MEM_ID_PORT(id, i),
def975307c0119 Ansuel Smith 2021-11-23 2353 !delete << QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i) |
def975307c0119 Ansuel Smith 2021-11-23 2354 port << QCA8K_REG_GOL_TRUNK_ID_MEM_ID_SHIFT(id, i));
def975307c0119 Ansuel Smith 2021-11-23 2355 }
def975307c0119 Ansuel Smith 2021-11-23 2356
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org
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