From: Thomas Gleixner <tglx@linutronix.de>
Date: Wed, 6 Aug 2025 14:53:18 +0000 (+0200)
Subject: irqchip/mvebu-gicp: Use resource_size() for ioremap()
X-Git-Tag: io_uring-6.17-20250815~5^2
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=9f7488f24c7571d349d938061e0ede7a39b65d6b;p=linux-block.git

irqchip/mvebu-gicp: Use resource_size() for ioremap()

0-day reported an off by one in the ioremap() sizing:

  drivers/irqchip/irq-mvebu-gicp.c:240:45-48: WARNING:
  Suspicious code. resource_size is maybe missing with gicp -> res

Convert it to resource_size(), which does the right thing.

Fixes: 3c3d7dbab2c7 ("irqchip/mvebu-gicp: Clear pending interrupts on init")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Closes: https://lore.kernel.org/oe-kbuild-all/202508062150.mtFQMTXc-lkp@intel.com/
---

diff --git a/drivers/irqchip/irq-mvebu-gicp.c b/drivers/irqchip/irq-mvebu-gicp.c
index fd85c845e015..54833717f8a7 100644
--- a/drivers/irqchip/irq-mvebu-gicp.c
+++ b/drivers/irqchip/irq-mvebu-gicp.c
@@ -237,7 +237,7 @@ static int mvebu_gicp_probe(struct platform_device *pdev)
 		return -ENODEV;
 	}
 
-	base = ioremap(gicp->res->start, gicp->res->end - gicp->res->start);
+	base = ioremap(gicp->res->start, resource_size(gicp->res));
 	if (IS_ERR(base)) {
 		dev_err(&pdev->dev, "ioremap() failed. Unable to clear pending interrupts.\n");
 	} else {