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Tue, 13 Oct 2026 02:58:01 -0700 (PDT) Received: from localhost.localdomain ([2a06:c701:4778:c500:c7f5:a913:e714:a9c3]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-48de0ab5991sm4466267f8f.29.2026.10.13.02.57.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Oct 2026 02:58:00 -0700 (PDT) From: Avi Weiss To: Conor Dooley , Jonathan Cameron Cc: Paul Walmsley , Samuel Holland , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, Avi Weiss Subject: [PATCH] cache: sifive_ccache: propagate IRQ count errors Date: Tue, 13 Oct 2026 12:57:56 +0300 Message-ID: <20261013095756.1084568-1-thnkslprpt@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit platform_irq_count() returns -EPROBE_DEFER when the interrupt provider is not ready, but sifive_ccache_probe() only checks for a zero count. -EPROBE_DEFER seems to be the only negative return code possible here (currently). A negative count skips the IRQ registration loop and allows the probe to return success without requesting a deferred retry. Return negative IRQ counts so the driver is reprobed when the interrupt provider becomes available. Fixes: c90847bcbfb6 ("cache: sifive_ccache: Partially convert to a platform driver") Signed-off-by: Avi Weiss --- drivers/cache/sifive_ccache.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/cache/sifive_ccache.c b/drivers/cache/sifive_ccache.c index 2acb8bdf06d52..b4033110f34e5 100644 --- a/drivers/cache/sifive_ccache.c +++ b/drivers/cache/sifive_ccache.c @@ -262,6 +262,9 @@ static int sifive_ccache_probe(struct platform_device *pdev) quirks = (unsigned long)device_get_match_data(dev); intr_num = platform_irq_count(pdev); + if (intr_num < 0) + return dev_err_probe(dev, intr_num, + "Failed to count interrupts\n"); if (!intr_num) return dev_err_probe(dev, -ENODEV, "No interrupts property\n"); base-commit: 24a19b953e2a3d0ea5a8c4951a0ab8f32720c907 -- 2.43.0