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Sat, 03 Feb 2024 13:26:58 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCXqnLwWYq/Hyd0WZBD8DHXU3p2pIPyRURF9CjiMZvwY6hAjDoAszNdnZzBP7ygHFMcsr91EyzYX4D7nYJuPwRycfmf+XBfxuTdcC7hXyGXyfq03Z0u3FiwrK5SR5oRL+do93G56/KFUadfArHZXafNJGUICrDMspG2qoP651B4P37l8QLlUo7BoIbIajX8tYT4EPGSJ58r0Uso2XorfITHgDUdRAp1MJXthr1orup21IMhfLwaY7nAvZXgn89u4jn0ynh2J3XIlvWAtUAtHygFVRdTZwOGvsqM/G6ypBIk/pqB0xkiVX/qAuJXcHbfFIQHy Received: from prasmi.home ([2a00:23c8:2500:a01:c74c:5b2a:8ca7:1220]) by smtp.gmail.com with ESMTPSA id g9-20020a5d46c9000000b0033af4848124sm4715366wrs.109.2024.02.03.13.26.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Feb 2024 13:26:58 -0800 (PST) From: Prabhakar X-Google-Original-From: Prabhakar To: Geert Uytterhoeven , Conor Dooley Cc: linux-riscv@lists.infradead.org, linux-renesas-soc@vger.kernel.org, linux-kernel@vger.kernel.org, Prabhakar , Biju Das , Lad Prabhakar , Pavel Machek Subject: [PATCH] cache: ax45mp_cache: Align end size to cache boundary in ax45mp_dma_cache_wback() Date: Sat, 3 Feb 2024 21:26:40 +0000 Message-Id: <20240203212640.129797-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1789914682530199759 X-GMAIL-MSGID: 1789914682530199759 From: Lad Prabhakar Align the end size to cache boundary size in ax45mp_dma_cache_wback() callback likewise done in ax45mp_dma_cache_inv() callback. Additionally return early in case of start == end. Fixes: d34599bcd2e4 ("cache: Add L2 cache management for Andes AX45MP RISC-V core") Reported-by: Pavel Machek Signed-off-by: Lad Prabhakar --- drivers/cache/ax45mp_cache.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/cache/ax45mp_cache.c b/drivers/cache/ax45mp_cache.c index 57186c58dc84..1d7dd3d2c101 100644 --- a/drivers/cache/ax45mp_cache.c +++ b/drivers/cache/ax45mp_cache.c @@ -129,8 +129,12 @@ static void ax45mp_dma_cache_wback(phys_addr_t paddr, size_t size) unsigned long line_size; unsigned long flags; + if (unlikely(start == end)) + return; + line_size = ax45mp_priv.ax45mp_cache_line_size; start = start & (~(line_size - 1)); + end = ((end + line_size - 1) & (~(line_size - 1))); local_irq_save(flags); ax45mp_cpu_dcache_wb_range(start, end); local_irq_restore(flags);