* drivers/clk/clk-apple-nco.c:216:20: warning: Parameter 'parent_rate' can be declared with const [constParameter]
@ 2022-04-08 14:20 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-04-08 14:20 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 9641 bytes --]
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: "Martin Povišer" <povik+lin@cutebit.org>
CC: Stephen Boyd <sboyd@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 1831fed559732b132aef0ea8261ac77e73f7eadf
commit: 6641057d5dba87338780cf3e0d0ae8389ef1125c clk: clk-apple-nco: Add driver for Apple NCO
date: 4 weeks ago
:::::: branch date: 9 hours ago
:::::: commit date: 4 weeks ago
compiler: aarch64-linux-gcc (GCC) 11.2.0
reproduce (cppcheck warning):
# apt-get install cppcheck
git checkout 6641057d5dba87338780cf3e0d0ae8389ef1125c
cppcheck --quiet --enable=style,performance,portability --template=gcc FILE
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/clk/socfpga/clk-s10.c:401:53: warning: Uninitialized variable: clk_data [uninitvar]
clk_data = devm_kzalloc(dev, struct_size(clk_data, clk_data.hws,
^
--
>> drivers/clk/clk-apple-nco.c:216:20: warning: Parameter 'parent_rate' can be declared with const [constParameter]
unsigned long *parent_rate)
^
>> drivers/clk/clk-apple-nco.c:180:19: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
writel_relaxed(1 << 31, chan->base + REG_ACCINIT);
^
drivers/clk/clk-apple-nco.c:205:17: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
if (inc1 >= (1 << 31) || inc2 < (1 << 31) || (inc1 == 0 && inc2 == 0))
^
>> drivers/clk/clk-apple-nco.c:180:19: warning: Signed integer overflow for expression '1<<31'. [integerOverflow]
writel_relaxed(1 << 31, chan->base + REG_ACCINIT);
^
drivers/clk/clk-apple-nco.c:205:17: warning: Signed integer overflow for expression '1<<31'. [integerOverflow]
if (inc1 >= (1 << 31) || inc2 < (1 << 31) || (inc1 == 0 && inc2 == 0))
^
--
>> drivers/clk/sifive/sifive-prci.c:237:10: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
if (r & PRCI_COREPLLCFG1_CKE_MASK)
^
drivers/clk/sifive/sifive-prci.c:252:35: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
__prci_wrpll_write_cfg1(pd, pwd, PRCI_COREPLLCFG1_CKE_MASK);
^
drivers/clk/sifive/sifive-prci.c:271:8: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
r &= ~PRCI_COREPLLCFG1_CKE_MASK;
^
>> drivers/clk/sifive/sifive-prci.c:237:10: warning: Signed integer overflow for expression '0x1<<31'. [integerOverflow]
if (r & PRCI_COREPLLCFG1_CKE_MASK)
^
drivers/clk/sifive/sifive-prci.c:252:35: warning: Signed integer overflow for expression '0x1<<31'. [integerOverflow]
__prci_wrpll_write_cfg1(pd, pwd, PRCI_COREPLLCFG1_CKE_MASK);
^
drivers/clk/sifive/sifive-prci.c:271:8: warning: Signed integer overflow for expression '0x1<<31'. [integerOverflow]
r &= ~PRCI_COREPLLCFG1_CKE_MASK;
^
>> drivers/dma/qcom/hidma.c:135:48: warning: Uninitialized variable: mdesc->tre_ch [uninitvar]
llstat = hidma_ll_status(mdma->lldev, mdesc->tre_ch);
^
>> drivers/dma/qcom/hidma.c:239:48: warning: Uninitialized variable: qdesc->tre_ch [uninitvar]
hidma_ll_queue_request(dmadev->lldev, qdesc->tre_ch);
^
drivers/dma/qcom/hidma.c:542:37: warning: Uninitialized variable: mdesc->tre_ch [uninitvar]
hidma_ll_free(mdma->lldev, mdesc->tre_ch);
^
vim +/parent_rate +216 drivers/clk/clk-apple-nco.c
6641057d5dba873 Martin Povišer 2022-02-08 153
6641057d5dba873 Martin Povišer 2022-02-08 154 static int applnco_set_rate(struct clk_hw *hw, unsigned long rate,
6641057d5dba873 Martin Povišer 2022-02-08 155 unsigned long parent_rate)
6641057d5dba873 Martin Povišer 2022-02-08 156 {
6641057d5dba873 Martin Povišer 2022-02-08 157 struct applnco_channel *chan = to_applnco_channel(hw);
6641057d5dba873 Martin Povišer 2022-02-08 158 unsigned long flags;
6641057d5dba873 Martin Povišer 2022-02-08 159 u32 div, inc1, inc2;
6641057d5dba873 Martin Povišer 2022-02-08 160 bool was_enabled;
6641057d5dba873 Martin Povišer 2022-02-08 161
6641057d5dba873 Martin Povišer 2022-02-08 162 div = 2 * parent_rate / rate;
6641057d5dba873 Martin Povišer 2022-02-08 163 inc1 = 2 * parent_rate - div * rate;
6641057d5dba873 Martin Povišer 2022-02-08 164 inc2 = inc1 - rate;
6641057d5dba873 Martin Povišer 2022-02-08 165
6641057d5dba873 Martin Povišer 2022-02-08 166 if (applnco_div_out_of_range(div))
6641057d5dba873 Martin Povišer 2022-02-08 167 return -EINVAL;
6641057d5dba873 Martin Povišer 2022-02-08 168
6641057d5dba873 Martin Povišer 2022-02-08 169 div = applnco_div_translate(chan->tbl, div);
6641057d5dba873 Martin Povišer 2022-02-08 170
6641057d5dba873 Martin Povišer 2022-02-08 171 spin_lock_irqsave(&chan->lock, flags);
6641057d5dba873 Martin Povišer 2022-02-08 172 was_enabled = applnco_is_enabled(hw);
6641057d5dba873 Martin Povišer 2022-02-08 173 applnco_disable_nolock(hw);
6641057d5dba873 Martin Povišer 2022-02-08 174
6641057d5dba873 Martin Povišer 2022-02-08 175 writel_relaxed(div, chan->base + REG_DIV);
6641057d5dba873 Martin Povišer 2022-02-08 176 writel_relaxed(inc1, chan->base + REG_INC1);
6641057d5dba873 Martin Povišer 2022-02-08 177 writel_relaxed(inc2, chan->base + REG_INC2);
6641057d5dba873 Martin Povišer 2022-02-08 178
6641057d5dba873 Martin Povišer 2022-02-08 179 /* Presumably a neutral initial value for accumulator */
6641057d5dba873 Martin Povišer 2022-02-08 @180 writel_relaxed(1 << 31, chan->base + REG_ACCINIT);
6641057d5dba873 Martin Povišer 2022-02-08 181
6641057d5dba873 Martin Povišer 2022-02-08 182 if (was_enabled)
6641057d5dba873 Martin Povišer 2022-02-08 183 applnco_enable_nolock(hw);
6641057d5dba873 Martin Povišer 2022-02-08 184 spin_unlock_irqrestore(&chan->lock, flags);
6641057d5dba873 Martin Povišer 2022-02-08 185
6641057d5dba873 Martin Povišer 2022-02-08 186 return 0;
6641057d5dba873 Martin Povišer 2022-02-08 187 }
6641057d5dba873 Martin Povišer 2022-02-08 188
6641057d5dba873 Martin Povišer 2022-02-08 189 static unsigned long applnco_recalc_rate(struct clk_hw *hw,
6641057d5dba873 Martin Povišer 2022-02-08 190 unsigned long parent_rate)
6641057d5dba873 Martin Povišer 2022-02-08 191 {
6641057d5dba873 Martin Povišer 2022-02-08 192 struct applnco_channel *chan = to_applnco_channel(hw);
6641057d5dba873 Martin Povišer 2022-02-08 193 u32 div, inc1, inc2, incbase;
6641057d5dba873 Martin Povišer 2022-02-08 194
6641057d5dba873 Martin Povišer 2022-02-08 195 div = applnco_div_translate_inv(chan->tbl,
6641057d5dba873 Martin Povišer 2022-02-08 196 readl_relaxed(chan->base + REG_DIV));
6641057d5dba873 Martin Povišer 2022-02-08 197
6641057d5dba873 Martin Povišer 2022-02-08 198 inc1 = readl_relaxed(chan->base + REG_INC1);
6641057d5dba873 Martin Povišer 2022-02-08 199 inc2 = readl_relaxed(chan->base + REG_INC2);
6641057d5dba873 Martin Povišer 2022-02-08 200
6641057d5dba873 Martin Povišer 2022-02-08 201 /*
6641057d5dba873 Martin Povišer 2022-02-08 202 * We don't support wraparound of accumulator
6641057d5dba873 Martin Povišer 2022-02-08 203 * nor the edge case of both increments being zero
6641057d5dba873 Martin Povišer 2022-02-08 204 */
6641057d5dba873 Martin Povišer 2022-02-08 205 if (inc1 >= (1 << 31) || inc2 < (1 << 31) || (inc1 == 0 && inc2 == 0))
6641057d5dba873 Martin Povišer 2022-02-08 206 return 0;
6641057d5dba873 Martin Povišer 2022-02-08 207
6641057d5dba873 Martin Povišer 2022-02-08 208 /* Scale both sides of division by incbase to maintain precision */
6641057d5dba873 Martin Povišer 2022-02-08 209 incbase = inc1 - inc2;
6641057d5dba873 Martin Povišer 2022-02-08 210
6641057d5dba873 Martin Povišer 2022-02-08 211 return div64_u64(((u64) parent_rate) * 2 * incbase,
6641057d5dba873 Martin Povišer 2022-02-08 212 ((u64) div) * incbase + inc1);
6641057d5dba873 Martin Povišer 2022-02-08 213 }
6641057d5dba873 Martin Povišer 2022-02-08 214
6641057d5dba873 Martin Povišer 2022-02-08 215 static long applnco_round_rate(struct clk_hw *hw, unsigned long rate,
6641057d5dba873 Martin Povišer 2022-02-08 @216 unsigned long *parent_rate)
6641057d5dba873 Martin Povišer 2022-02-08 217 {
6641057d5dba873 Martin Povišer 2022-02-08 218 unsigned long lo = *parent_rate / (COARSE_DIV_OFFSET + LFSR_TBLSIZE) + 1;
6641057d5dba873 Martin Povišer 2022-02-08 219 unsigned long hi = *parent_rate / COARSE_DIV_OFFSET;
6641057d5dba873 Martin Povišer 2022-02-08 220
6641057d5dba873 Martin Povišer 2022-02-08 221 return clamp(rate, lo, hi);
6641057d5dba873 Martin Povišer 2022-02-08 222 }
6641057d5dba873 Martin Povišer 2022-02-08 223
--
0-DAY CI Kernel Test Service
https://01.org/lkp
^ permalink raw reply [flat|nested] 2+ messages in thread
* drivers/clk/clk-apple-nco.c:216:20: warning: Parameter 'parent_rate' can be declared with const [constParameter]
@ 2022-04-18 19:13 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2022-04-18 19:13 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 10484 bytes --]
CC: kbuild-all(a)lists.01.org
BCC: lkp(a)intel.com
CC: linux-kernel(a)vger.kernel.org
TO: "Martin Povišer" <povik+lin@cutebit.org>
CC: Stephen Boyd <sboyd@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: b2d229d4ddb17db541098b83524d901257e93845
commit: 6641057d5dba87338780cf3e0d0ae8389ef1125c clk: clk-apple-nco: Add driver for Apple NCO
date: 5 weeks ago
:::::: branch date: 22 hours ago
:::::: commit date: 5 weeks ago
compiler: ia64-linux-gcc (GCC) 11.2.0
reproduce (cppcheck warning):
# apt-get install cppcheck
git checkout 6641057d5dba87338780cf3e0d0ae8389ef1125c
cppcheck --quiet --enable=style,performance,portability --template=gcc FILE
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/clk/clk-apple-nco.c:216:20: warning: Parameter 'parent_rate' can be declared with const [constParameter]
unsigned long *parent_rate)
^
>> drivers/clk/clk-apple-nco.c:180:19: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
writel_relaxed(1 << 31, chan->base + REG_ACCINIT);
^
drivers/clk/clk-apple-nco.c:205:17: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
if (inc1 >= (1 << 31) || inc2 < (1 << 31) || (inc1 == 0 && inc2 == 0))
^
>> drivers/clk/clk-apple-nco.c:180:19: warning: Signed integer overflow for expression '1<<31'. [integerOverflow]
writel_relaxed(1 << 31, chan->base + REG_ACCINIT);
^
drivers/clk/clk-apple-nco.c:205:17: warning: Signed integer overflow for expression '1<<31'. [integerOverflow]
if (inc1 >= (1 << 31) || inc2 < (1 << 31) || (inc1 == 0 && inc2 == 0))
^
--
>> drivers/pwm/pwm-mediatek.c:246:3: warning: %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [invalidPrintfArgType_sint]
snprintf(name, sizeof(name), "pwm%d", i + 1);
^
--
>> drivers/clk/sifive/sifive-prci.c:237:10: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
if (r & PRCI_COREPLLCFG1_CKE_MASK)
^
drivers/clk/sifive/sifive-prci.c:252:35: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
__prci_wrpll_write_cfg1(pd, pwd, PRCI_COREPLLCFG1_CKE_MASK);
^
drivers/clk/sifive/sifive-prci.c:271:8: warning: Shifting signed 32-bit value by 31 bits is implementation-defined behaviour [shiftTooManyBitsSigned]
r &= ~PRCI_COREPLLCFG1_CKE_MASK;
^
>> drivers/clk/sifive/sifive-prci.c:237:10: warning: Signed integer overflow for expression '0x1<<31'. [integerOverflow]
if (r & PRCI_COREPLLCFG1_CKE_MASK)
^
drivers/clk/sifive/sifive-prci.c:252:35: warning: Signed integer overflow for expression '0x1<<31'. [integerOverflow]
__prci_wrpll_write_cfg1(pd, pwd, PRCI_COREPLLCFG1_CKE_MASK);
^
drivers/clk/sifive/sifive-prci.c:271:8: warning: Signed integer overflow for expression '0x1<<31'. [integerOverflow]
r &= ~PRCI_COREPLLCFG1_CKE_MASK;
^
>> drivers/clk/qcom/clk-smd-rpm.c:293:40: warning: Same expression in both branches of ternary operator. [duplicateExpressionTernary]
active_rate = r->branch ? !!peer_rate : peer_rate;
^
drivers/clk/qcom/clk-smd-rpm.c:298:45: warning: Same expression in both branches of ternary operator. [duplicateExpressionTernary]
sleep_rate = r->branch ? !!peer_sleep_rate : peer_sleep_rate;
^
--
>> drivers/vfio/platform/vfio_platform_common.c:701:34: warning: Parameter 'fn' can be declared with const [constParameter]
vfio_platform_reset_fn_t fn)
^
>> drivers/vfio/platform/vfio_platform_common.c:442:47: warning: Parameter 'ppos' can be declared with const [constParameter]
char __user *buf, size_t count, loff_t *ppos)
^
drivers/vfio/platform/vfio_platform_common.c:519:30: warning: Parameter 'ppos' can be declared with const [constParameter]
size_t count, loff_t *ppos)
^
>> drivers/vfio/platform/vfio_platform_common.c:39:21: warning: Uninitialized variable: iter->compat [uninitvar]
if (!strcmp(iter->compat, compat) &&
^
drivers/vfio/platform/vfio_platform_common.c:707:21: warning: Uninitialized variable: iter->compat [uninitvar]
if (!strcmp(iter->compat, compat) && (iter->of_reset == fn)) {
^
vim +/parent_rate +216 drivers/clk/clk-apple-nco.c
6641057d5dba87 Martin Povišer 2022-02-08 153
6641057d5dba87 Martin Povišer 2022-02-08 154 static int applnco_set_rate(struct clk_hw *hw, unsigned long rate,
6641057d5dba87 Martin Povišer 2022-02-08 155 unsigned long parent_rate)
6641057d5dba87 Martin Povišer 2022-02-08 156 {
6641057d5dba87 Martin Povišer 2022-02-08 157 struct applnco_channel *chan = to_applnco_channel(hw);
6641057d5dba87 Martin Povišer 2022-02-08 158 unsigned long flags;
6641057d5dba87 Martin Povišer 2022-02-08 159 u32 div, inc1, inc2;
6641057d5dba87 Martin Povišer 2022-02-08 160 bool was_enabled;
6641057d5dba87 Martin Povišer 2022-02-08 161
6641057d5dba87 Martin Povišer 2022-02-08 162 div = 2 * parent_rate / rate;
6641057d5dba87 Martin Povišer 2022-02-08 163 inc1 = 2 * parent_rate - div * rate;
6641057d5dba87 Martin Povišer 2022-02-08 164 inc2 = inc1 - rate;
6641057d5dba87 Martin Povišer 2022-02-08 165
6641057d5dba87 Martin Povišer 2022-02-08 166 if (applnco_div_out_of_range(div))
6641057d5dba87 Martin Povišer 2022-02-08 167 return -EINVAL;
6641057d5dba87 Martin Povišer 2022-02-08 168
6641057d5dba87 Martin Povišer 2022-02-08 169 div = applnco_div_translate(chan->tbl, div);
6641057d5dba87 Martin Povišer 2022-02-08 170
6641057d5dba87 Martin Povišer 2022-02-08 171 spin_lock_irqsave(&chan->lock, flags);
6641057d5dba87 Martin Povišer 2022-02-08 172 was_enabled = applnco_is_enabled(hw);
6641057d5dba87 Martin Povišer 2022-02-08 173 applnco_disable_nolock(hw);
6641057d5dba87 Martin Povišer 2022-02-08 174
6641057d5dba87 Martin Povišer 2022-02-08 175 writel_relaxed(div, chan->base + REG_DIV);
6641057d5dba87 Martin Povišer 2022-02-08 176 writel_relaxed(inc1, chan->base + REG_INC1);
6641057d5dba87 Martin Povišer 2022-02-08 177 writel_relaxed(inc2, chan->base + REG_INC2);
6641057d5dba87 Martin Povišer 2022-02-08 178
6641057d5dba87 Martin Povišer 2022-02-08 179 /* Presumably a neutral initial value for accumulator */
6641057d5dba87 Martin Povišer 2022-02-08 @180 writel_relaxed(1 << 31, chan->base + REG_ACCINIT);
6641057d5dba87 Martin Povišer 2022-02-08 181
6641057d5dba87 Martin Povišer 2022-02-08 182 if (was_enabled)
6641057d5dba87 Martin Povišer 2022-02-08 183 applnco_enable_nolock(hw);
6641057d5dba87 Martin Povišer 2022-02-08 184 spin_unlock_irqrestore(&chan->lock, flags);
6641057d5dba87 Martin Povišer 2022-02-08 185
6641057d5dba87 Martin Povišer 2022-02-08 186 return 0;
6641057d5dba87 Martin Povišer 2022-02-08 187 }
6641057d5dba87 Martin Povišer 2022-02-08 188
6641057d5dba87 Martin Povišer 2022-02-08 189 static unsigned long applnco_recalc_rate(struct clk_hw *hw,
6641057d5dba87 Martin Povišer 2022-02-08 190 unsigned long parent_rate)
6641057d5dba87 Martin Povišer 2022-02-08 191 {
6641057d5dba87 Martin Povišer 2022-02-08 192 struct applnco_channel *chan = to_applnco_channel(hw);
6641057d5dba87 Martin Povišer 2022-02-08 193 u32 div, inc1, inc2, incbase;
6641057d5dba87 Martin Povišer 2022-02-08 194
6641057d5dba87 Martin Povišer 2022-02-08 195 div = applnco_div_translate_inv(chan->tbl,
6641057d5dba87 Martin Povišer 2022-02-08 196 readl_relaxed(chan->base + REG_DIV));
6641057d5dba87 Martin Povišer 2022-02-08 197
6641057d5dba87 Martin Povišer 2022-02-08 198 inc1 = readl_relaxed(chan->base + REG_INC1);
6641057d5dba87 Martin Povišer 2022-02-08 199 inc2 = readl_relaxed(chan->base + REG_INC2);
6641057d5dba87 Martin Povišer 2022-02-08 200
6641057d5dba87 Martin Povišer 2022-02-08 201 /*
6641057d5dba87 Martin Povišer 2022-02-08 202 * We don't support wraparound of accumulator
6641057d5dba87 Martin Povišer 2022-02-08 203 * nor the edge case of both increments being zero
6641057d5dba87 Martin Povišer 2022-02-08 204 */
6641057d5dba87 Martin Povišer 2022-02-08 205 if (inc1 >= (1 << 31) || inc2 < (1 << 31) || (inc1 == 0 && inc2 == 0))
6641057d5dba87 Martin Povišer 2022-02-08 206 return 0;
6641057d5dba87 Martin Povišer 2022-02-08 207
6641057d5dba87 Martin Povišer 2022-02-08 208 /* Scale both sides of division by incbase to maintain precision */
6641057d5dba87 Martin Povišer 2022-02-08 209 incbase = inc1 - inc2;
6641057d5dba87 Martin Povišer 2022-02-08 210
6641057d5dba87 Martin Povišer 2022-02-08 211 return div64_u64(((u64) parent_rate) * 2 * incbase,
6641057d5dba87 Martin Povišer 2022-02-08 212 ((u64) div) * incbase + inc1);
6641057d5dba87 Martin Povišer 2022-02-08 213 }
6641057d5dba87 Martin Povišer 2022-02-08 214
6641057d5dba87 Martin Povišer 2022-02-08 215 static long applnco_round_rate(struct clk_hw *hw, unsigned long rate,
6641057d5dba87 Martin Povišer 2022-02-08 @216 unsigned long *parent_rate)
6641057d5dba87 Martin Povišer 2022-02-08 217 {
6641057d5dba87 Martin Povišer 2022-02-08 218 unsigned long lo = *parent_rate / (COARSE_DIV_OFFSET + LFSR_TBLSIZE) + 1;
6641057d5dba87 Martin Povišer 2022-02-08 219 unsigned long hi = *parent_rate / COARSE_DIV_OFFSET;
6641057d5dba87 Martin Povišer 2022-02-08 220
6641057d5dba87 Martin Povišer 2022-02-08 221 return clamp(rate, lo, hi);
6641057d5dba87 Martin Povišer 2022-02-08 222 }
6641057d5dba87 Martin Povišer 2022-02-08 223
--
0-DAY CI Kernel Test Service
https://01.org/lkp
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-04-18 19:13 UTC | newest]
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