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Message-ID: <202207120820.CgmP4eFQ-lkp@intel.com>
Date: Tue, 12 Jul 2022 08:44:05 +0800
From: kernel test robot <lkp@...el.com>
To: Mugilraj Dhavachelvan <dmugil2000@...il.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org,
Jonathan Cameron <Jonathan.Cameron@...wei.com>,
Andy Shevchenko <andy.shevchenko@...il.com>
Subject: drivers/iio/potentiometer/ad5110.c:59:8: warning: Excessive padding
in 'struct ad5110_data' (107 padding bytes, where 43 is optimal). Optimal
fields order: buf, tol, client, cfg, lock, enable, consider reordering the
fields or adding explicit padding memb...
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 5a29232d870d9e63fe5ff30b081be6ea7cc2465d
commit: d03a74bfaccefcf271bf8e889c31229aa521cd66 iio: potentiometer: Add driver support for AD5110
date: 11 months ago
config: arm-randconfig-c002-20220702 (https://download.01.org/0day-ci/archive/20220712/202207120820.CgmP4eFQ-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project f7a80c3d08d4821e621fc88d6a2e435291f82dff)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install arm cross compiling tool for clang build
# apt-get install binutils-arm-linux-gnueabi
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d03a74bfaccefcf271bf8e889c31229aa521cd66
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout d03a74bfaccefcf271bf8e889c31229aa521cd66
# save the config file
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm clang-analyzer
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
clang-analyzer warnings: (new ones prefixed by >>)
sound/core/control.c:2197:13: note: Loop condition is false. Exiting loop
control = snd_kcontrol(card->controls.next);
^
include/sound/control.h:87:25: note: expanded from macro 'snd_kcontrol'
#define snd_kcontrol(n) list_entry(n, struct snd_kcontrol, list)
^
include/linux/list.h:511:2: note: expanded from macro 'list_entry'
container_of(ptr, type, member)
^
include/linux/kernel.h:495:2: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/compiler_types.h:328:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:316:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:306:2: note: expanded from macro '__compiletime_assert'
do { \
^
sound/core/control.c:2198:3: note: Use of memory after it is freed
snd_ctl_remove(card, control);
^ ~~~~~~~
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
Suppressed 17 warnings (16 in non-user code, 1 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
Suppressed 17 warnings (16 in non-user code, 1 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
drivers/iio/accel/sca3000.c:163:8: warning: Excessive padding in 'struct sca3000_state' (94 padding bytes, where 30 is optimal). Optimal fields order: tx, last_timestamp, us, info, mo_det_use_count, lock, rx, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct sca3000_state {
~~~~~~~^~~~~~~~~~~~~~~
drivers/iio/accel/sca3000.c:163:8: note: Excessive padding in 'struct sca3000_state' (94 padding bytes, where 30 is optimal). Optimal fields order: tx, last_timestamp, us, info, mo_det_use_count, lock, rx, consider reordering the fields or adding explicit padding members
struct sca3000_state {
~~~~~~~^~~~~~~~~~~~~~~
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
Suppressed 17 warnings (17 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
Suppressed 17 warnings (17 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
drivers/iio/magnetometer/yamaha-yas530.c:680:29: warning: Value stored to 'c' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct yas5xx_calibration *c = &yas5xx->calibration;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/iio/magnetometer/yamaha-yas530.c:680:29: note: Value stored to 'c' during its initialization is never read
struct yas5xx_calibration *c = &yas5xx->calibration;
^ ~~~~~~~~~~~~~~~~~~~~
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
>> drivers/iio/potentiometer/ad5110.c:59:8: warning: Excessive padding in 'struct ad5110_data' (107 padding bytes, where 43 is optimal). Optimal fields order: buf, tol, client, cfg, lock, enable, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct ad5110_data {
~~~~~~~^~~~~~~~~~~~~
drivers/iio/potentiometer/ad5110.c:59:8: note: Excessive padding in 'struct ad5110_data' (107 padding bytes, where 43 is optimal). Optimal fields order: buf, tol, client, cfg, lock, enable, consider reordering the fields or adding explicit padding members
struct ad5110_data {
~~~~~~~^~~~~~~~~~~~~
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
drivers/mtd/devices/phram.c:231:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(str, val);
^~~~~~
drivers/mtd/devices/phram.c:231:2: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(str, val);
^~~~~~
drivers/mtd/devices/phram.c:315:2: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119 [clang-analyzer-security.insecureAPI.strcpy]
strcpy(phram_paramline, val);
^~~~~~
drivers/mtd/devices/phram.c:315:2: note: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
strcpy(phram_paramline, val);
^~~~~~
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
sound/core/seq/seq_prioq.c:292:16: warning: Access to field 'next' results in a dereference of a null pointer (loaded from variable 'prev') [clang-analyzer-core.NullDereference]
prev->next = cell->next;
~~~~ ^
sound/core/seq/seq_prioq.c:279:2: note: 'prev' initialized to a null pointer value
struct snd_seq_event_cell *prev = NULL;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sound/core/seq/seq_prioq.c:283:2: note: Loop condition is false. Exiting loop
spin_lock_irqsave(&f->lock, flags);
^
include/linux/spinlock.h:384:2: note: expanded from macro 'spin_lock_irqsave'
raw_spin_lock_irqsave(spinlock_check(lock), flags); \
^
include/linux/spinlock.h:250:2: note: expanded from macro 'raw_spin_lock_irqsave'
do { \
^
sound/core/seq/seq_prioq.c:283:2: note: Loop condition is false. Exiting loop
spin_lock_irqsave(&f->lock, flags);
^
include/linux/spinlock.h:382:43: note: expanded from macro 'spin_lock_irqsave'
#define spin_lock_irqsave(lock, flags) \
^
sound/core/seq/seq_prioq.c:285:2: note: Loop condition is true. Entering loop body
while (cell) {
^
sound/core/seq/seq_prioq.c:287:3: note: Taking true branch
if (prioq_match(cell, client, timestamp)) {
^
sound/core/seq/seq_prioq.c:289:8: note: 'cell' is equal to field 'head'
if (cell == f->head) {
^~~~
sound/core/seq/seq_prioq.c:289:4: note: Taking true branch
if (cell == f->head) {
^
sound/core/seq/seq_prioq.c:294:8: note: Assuming 'cell' is not equal to field 'tail'
if (cell == f->tail)
^~~~~~~~~~~~~~~
sound/core/seq/seq_prioq.c:294:4: note: Taking false branch
if (cell == f->tail)
^
sound/core/seq/seq_prioq.c:299:8: note: 'freefirst' is equal to NULL
if (freefirst == NULL) {
^~~~~~~~~
sound/core/seq/seq_prioq.c:299:4: note: Taking true branch
if (freefirst == NULL) {
^
sound/core/seq/seq_prioq.c:285:2: note: Loop condition is true. Entering loop body
while (cell) {
^
sound/core/seq/seq_prioq.c:287:3: note: Taking true branch
if (prioq_match(cell, client, timestamp)) {
^
sound/core/seq/seq_prioq.c:289:8: note: 'cell' is equal to field 'head'
if (cell == f->head) {
^~~~
sound/core/seq/seq_prioq.c:289:4: note: Taking true branch
if (cell == f->head) {
--
^ ~
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
drivers/iio/adc/hi8435.c:43:8: warning: Excessive padding in 'struct hi8435_priv' (89 padding bytes, where 25 is optimal). Optimal fields order: reg_buffer, spi, event_scan_mask, event_prev_val, threshold_lo, threshold_hi, lock, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct hi8435_priv {
~~~~~~~^~~~~~~~~~~~~
drivers/iio/adc/hi8435.c:43:8: note: Excessive padding in 'struct hi8435_priv' (89 padding bytes, where 25 is optimal). Optimal fields order: reg_buffer, spi, event_scan_mask, event_prev_val, threshold_lo, threshold_hi, lock, consider reordering the fields or adding explicit padding members
struct hi8435_priv {
~~~~~~~^~~~~~~~~~~~~
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
drivers/power/supply/bq256xx_charger.c:1521:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/power/supply/bq256xx_charger.c:1521:2: note: Value stored to 'ret' is never read
ret = regmap_update_bits(bq->regmap, BQ256XX_CHARGER_CONTROL_1,
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
drivers/power/supply/sc2731_charger.c:450:14: warning: Assigned value is garbage or undefined [clang-analyzer-core.uninitialized.Assign]
info->limit = min;
^ ~~~
drivers/power/supply/sc2731_charger.c:439:15: note: 'min' declared without an initial value
unsigned int min, max;
^~~
drivers/power/supply/sc2731_charger.c:446:6: note: Assuming field 'chg_state' is equal to USB_CHARGER_PRESENT
if (info->usb_phy->chg_state != USB_CHARGER_PRESENT)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/power/supply/sc2731_charger.c:446:2: note: Taking false branch
if (info->usb_phy->chg_state != USB_CHARGER_PRESENT)
^
drivers/power/supply/sc2731_charger.c:449:2: note: Calling 'usb_phy_get_charger_current'
usb_phy_get_charger_current(info->usb_phy, &min, &max);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/usb/phy.h:279:1: note: Returning without writing to '*min'
}
^
drivers/power/supply/sc2731_charger.c:449:2: note: Returning from 'usb_phy_get_charger_current'
usb_phy_get_charger_current(info->usb_phy, &min, &max);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/power/supply/sc2731_charger.c:450:14: note: Assigned value is garbage or undefined
info->limit = min;
^ ~~~
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
Suppressed 17 warnings (17 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
15 warnings generated.
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
drivers/iio/magnetometer/yamaha-yas530.c:680:29: warning: Value stored to 'c' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct yas5xx_calibration *c = &yas5xx->calibration;
^ ~~~~~~~~~~~~~~~~~~~~
drivers/iio/magnetometer/yamaha-yas530.c:680:29: note: Value stored to 'c' during its initialization is never read
struct yas5xx_calibration *c = &yas5xx->calibration;
^ ~~~~~~~~~~~~~~~~~~~~
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
17 warnings generated.
>> drivers/iio/potentiometer/ad5110.c:59:8: warning: Excessive padding in 'struct ad5110_data' (107 padding bytes, where 43 is optimal). Optimal fields order: buf, tol, client, cfg, lock, enable, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct ad5110_data {
~~~~~~~^~~~~~~~~~~~~
drivers/iio/potentiometer/ad5110.c:59:8: note: Excessive padding in 'struct ad5110_data' (107 padding bytes, where 43 is optimal). Optimal fields order: buf, tol, client, cfg, lock, enable, consider reordering the fields or adding explicit padding members
struct ad5110_data {
~~~~~~~^~~~~~~~~~~~~
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
drivers/iio/potentiometer/max5481.c:44:8: warning: Excessive padding in 'struct max5481_data' (117 padding bytes, where 53 is optimal). Optimal fields order: msg, spi, cfg, consider reordering the fields or adding explicit padding members [clang-analyzer-optin.performance.Padding]
struct max5481_data {
~~~~~~~^~~~~~~~~~~~~~
drivers/iio/potentiometer/max5481.c:44:8: note: Excessive padding in 'struct max5481_data' (117 padding bytes, where 53 is optimal). Optimal fields order: msg, spi, cfg, consider reordering the fields or adding explicit padding members
struct max5481_data {
~~~~~~~^~~~~~~~~~~~~~
Suppressed 15 warnings (15 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
16 warnings generated.
Suppressed 16 warnings (16 in non-user code).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
25 warnings generated.
drivers/memory/tegra/tegra210-emc-cc-r21021.c:148:15: warning: The left expression of the compound assignment is an uninitialized value. The computed value will also be garbage [clang-analyzer-core.uninitialized.Assign]
temp[i][0] |= (value & 0x00ff) >> 0;
~~~~~~~~~~ ^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:118:34: note: Assuming 'type' is not equal to PERIODIC_TRAINING_UPDATE
bool periodic_training_update = type == PERIODIC_TRAINING_UPDATE;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:123:21: note: Assuming 'type' is not equal to DVFS_UPDATE
bool dvfs_update = type == DVFS_UPDATE;
^~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:125:18: note: Assuming 'type' is equal to DVFS_PT1
bool dvfs_pt1 = type == DVFS_PT1;
^~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:133:6: note: 'dvfs_pt1' is true
if (dvfs_pt1 || periodic_training_update) {
^~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:133:15: note: Left side of '||' is true
if (dvfs_pt1 || periodic_training_update) {
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:136:15: note: Assuming 'i' is >= field 'num_channels'
for (i = 0; i < emc->num_channels; i++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:136:3: note: Loop condition is false. Execution continues on line 145
for (i = 0; i < emc->num_channels; i++) {
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:147:15: note: Assuming 'i' is < field 'num_channels'
for (i = 0; i < emc->num_channels; i++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:147:3: note: Loop condition is true. Entering loop body
for (i = 0; i < emc->num_channels; i++) {
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:148:15: note: The left expression of the compound assignment is an uninitialized value. The computed value will also be garbage
temp[i][0] |= (value & 0x00ff) >> 0;
~~~~~~~~~~ ^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:157:36: warning: The right operand of '*' is a garbage value [clang-analyzer-core.UndefinedBinaryOperatorResult]
cval /= last_timing_rate_mhz * 2 * temp[0][0];
^ ~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:118:34: note: Assuming 'type' is not equal to PERIODIC_TRAINING_UPDATE
bool periodic_training_update = type == PERIODIC_TRAINING_UPDATE;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:123:21: note: Assuming 'type' is not equal to DVFS_UPDATE
bool dvfs_update = type == DVFS_UPDATE;
^~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:125:18: note: Assuming 'type' is equal to DVFS_PT1
bool dvfs_pt1 = type == DVFS_PT1;
^~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:133:6: note: 'dvfs_pt1' is true
if (dvfs_pt1 || periodic_training_update) {
^~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:133:15: note: Left side of '||' is true
if (dvfs_pt1 || periodic_training_update) {
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:136:15: note: Assuming 'i' is >= field 'num_channels'
for (i = 0; i < emc->num_channels; i++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:136:3: note: Loop condition is false. Execution continues on line 145
for (i = 0; i < emc->num_channels; i++) {
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:147:15: note: Assuming 'i' is >= field 'num_channels'
for (i = 0; i < emc->num_channels; i++) {
^~~~~~~~~~~~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:147:3: note: Loop condition is false. Execution continues on line 154
for (i = 0; i < emc->num_channels; i++) {
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:154:6: note: 'dvfs_pt1' is true
if (dvfs_pt1 || periodic_training_update) {
^~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:154:15: note: Left side of '||' is true
if (dvfs_pt1 || periodic_training_update) {
^
drivers/memory/tegra/tegra210-emc-cc-r21021.c:157:36: note: The right operand of '*' is a garbage value
cval /= last_timing_rate_mhz * 2 * temp[0][0];
^ ~~~~~~~~~~
drivers/memory/tegra/tegra210-emc-cc-r21021.c:283:15: warning: The left expression of the compound assignment is an uninitialized value. The computed value will also be garbage [clang-analyzer-core.uninitialized.Assign]
temp[i][0] |= (value & 0x00ff) >> 0;
vim +59 drivers/iio/potentiometer/ad5110.c
58
> 59 struct ad5110_data {
60 struct i2c_client *client;
61 s16 tol; /* resistor tolerance */
62 bool enable;
63 struct mutex lock;
64 const struct ad5110_cfg *cfg;
65 /*
66 * DMA (thus cache coherency maintenance) requires the
67 * transfer buffers to live in their own cache lines.
68 */
69 u8 buf[2] ____cacheline_aligned;
70 };
71
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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