[avpatel:riscv_sbi_dbtr_v3 71/72] arch/riscv/kernel/hw_breakpoint.c:441:22: sparse: sparse: incorrect type in assignment (different base types)

tree:   https://github.com/avpatel/linux.git riscv_sbi_dbtr_v3
head:   beda8d39b4166d1ca21e78d4ff92e8e8ec11ea6a
commit: d24c3a0af904b9db5fdfddac9594f357e94d426d [71/72] riscv: Introduce support for hardware break/watchpoints
config: riscv-randconfig-r112-20260731 (https://download.01.org/0day-ci/archive/20260731/[email protected]/config)
compiler: riscv64-linux-gcc (GCC) 12.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260731/[email protected]/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

sparse warnings: (new ones prefixed by >>)
   WARNING: invalid argument to '-march': '_zacas_zabha'
>> arch/riscv/kernel/hw_breakpoint.c:441:22: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long tdata1 @@     got restricted __le64 [usertype] @@
   arch/riscv/kernel/hw_breakpoint.c:441:22: sparse:     expected unsigned long tdata1
   arch/riscv/kernel/hw_breakpoint.c:441:22: sparse:     got restricted __le64 [usertype]
>> arch/riscv/kernel/hw_breakpoint.c:442:22: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long tdata2 @@     got restricted __le64 [usertype] @@
   arch/riscv/kernel/hw_breakpoint.c:442:22: sparse:     expected unsigned long tdata2
   arch/riscv/kernel/hw_breakpoint.c:442:22: sparse:     got restricted __le64 [usertype]
>> arch/riscv/kernel/hw_breakpoint.c:443:22: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long tdata3 @@     got restricted __le64 [usertype] @@
   arch/riscv/kernel/hw_breakpoint.c:443:22: sparse:     expected unsigned long tdata3
   arch/riscv/kernel/hw_breakpoint.c:443:22: sparse:     got restricted __le64 [usertype]
>> arch/riscv/kernel/hw_breakpoint.c:454:15: sparse: sparse: cast to restricted __le64
   arch/riscv/kernel/hw_breakpoint.c:558:22: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long tdata1 @@     got restricted __le64 [usertype] @@
   arch/riscv/kernel/hw_breakpoint.c:558:22: sparse:     expected unsigned long tdata1
   arch/riscv/kernel/hw_breakpoint.c:558:22: sparse:     got restricted __le64 [usertype]
   arch/riscv/kernel/hw_breakpoint.c:559:22: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long tdata2 @@     got restricted __le64 [usertype] @@
   arch/riscv/kernel/hw_breakpoint.c:559:22: sparse:     expected unsigned long tdata2
   arch/riscv/kernel/hw_breakpoint.c:559:22: sparse:     got restricted __le64 [usertype]
   arch/riscv/kernel/hw_breakpoint.c:560:22: sparse: sparse: incorrect type in assignment (different base types) @@     expected unsigned long tdata3 @@     got restricted __le64 [usertype] @@
   arch/riscv/kernel/hw_breakpoint.c:560:22: sparse:     expected unsigned long tdata3
   arch/riscv/kernel/hw_breakpoint.c:560:22: sparse:     got restricted __le64 [usertype]

vim +441 arch/riscv/kernel/hw_breakpoint.c

   423	
   424	/* atomic: counter->ctx->lock is held */
   425	int arch_install_hw_breakpoint(struct perf_event *event)
   426	{
   427		struct arch_hw_breakpoint *bp = counter_arch_bp(event);
   428		union sbi_dbtr_shmem_entry *shmem = this_cpu_ptr(sbi_dbtr_shmem);
   429		struct sbi_dbtr_data_msg *xmit;
   430		struct sbi_dbtr_id_msg *recv;
   431		struct perf_event **slot;
   432		unsigned long idx;
   433		struct sbiret ret;
   434		int err = 0;
   435	
   436		raw_spin_lock_irqsave(this_cpu_ptr(&ecall_lock),
   437				      *this_cpu_ptr(&ecall_lock_flags));
   438	
   439		xmit = &shmem->data;
   440		recv = &shmem->id;
 > 441		xmit->tdata1 = cpu_to_le(bp->tdata1);
 > 442		xmit->tdata2 = cpu_to_le(bp->tdata2);
 > 443		xmit->tdata3 = cpu_to_le(bp->tdata3);
   444	
   445		ret = sbi_ecall(SBI_EXT_DBTR, SBI_EXT_DBTR_TRIG_INSTALL,
   446				1, 0, 0, 0, 0, 0);
   447	
   448		if (ret.error) {
   449			pr_warn("%s: failed to install trigger\n", __func__);
   450			err = -EIO;
   451			goto done;
   452		}
   453	
 > 454		idx = le_to_cpu(recv->idx);
   455		if (idx >= dbtr_total_num) {
   456			pr_warn("%s: invalid trigger index %lu\n", __func__, idx);
   457			err = -EINVAL;
   458			goto done;
   459		}
   460	
   461		slot = this_cpu_ptr(&pcpu_hw_bp_events[idx]);
   462		if (*slot) {
   463			pr_warn("%s: slot %lu is in use\n", __func__, idx);
   464			err = -EBUSY;
   465			goto done;
   466		}
   467	
   468		pr_debug("Trigger %lu installed at index 0x%lx\n", bp->tdata2, idx);
   469	
   470		/* Save the event - to be looked up in handler */
   471		*slot = event;
   472	
   473	done:
   474		raw_spin_unlock_irqrestore(this_cpu_ptr(&ecall_lock),
   475					   *this_cpu_ptr(&ecall_lock_flags));
   476		return err;
   477	}
   478	

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