From eeeeaafa62ea0cd4b86390f657dc0aea73bff4f5 Mon Sep 17 00:00:00 2001 From: Huacai Chen Date: Sun, 9 Nov 2025 16:02:01 +0800 Subject: [PATCH] LoongArch: Use correct accessor to read FWPC/MWPC CSR.FWPC and CSR.MWPC are 32bit registers, so use csr_read32() rather than csr_read64() to read the values of FWPC/MWPC. Cc: stable@vger.kernel.org Fixes: edffa33c7bb5a73 ("LoongArch: Add hardware breakpoints/watchpoints support") Signed-off-by: Huacai Chen --- arch/loongarch/include/asm/hw_breakpoint.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/loongarch/include/asm/hw_breakpoint.h b/arch/loongarch/include/asm/hw_breakpoint.h index 13b2462f3d8c9..5faa97a87a9e2 100644 --- a/arch/loongarch/include/asm/hw_breakpoint.h +++ b/arch/loongarch/include/asm/hw_breakpoint.h @@ -134,13 +134,13 @@ static inline void hw_breakpoint_thread_switch(struct task_struct *next) /* Determine number of BRP registers available. */ static inline int get_num_brps(void) { - return csr_read64(LOONGARCH_CSR_FWPC) & CSR_FWPC_NUM; + return csr_read32(LOONGARCH_CSR_FWPC) & CSR_FWPC_NUM; } /* Determine number of WRP registers available. */ static inline int get_num_wrps(void) { - return csr_read64(LOONGARCH_CSR_MWPC) & CSR_MWPC_NUM; + return csr_read32(LOONGARCH_CSR_MWPC) & CSR_MWPC_NUM; } #endif /* __KERNEL__ */ -- 2.47.3