linux-kernel - [PATCH 1/2] cxl/hdm: Fix && vs || bug

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Date:   Tue, 31 Oct 2023 12:53:52 +0300
From:   Dan Carpenter <dan.carpenter@...aro.org>
To:     Robert Richter <rrichter@....com>
Cc:     Davidlohr Bueso <dave@...olabs.net>,
        Jonathan Cameron <jonathan.cameron@...wei.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Alison Schofield <alison.schofield@...el.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Terry Bowman <terry.bowman@....com>, linux-cxl@...r.kernel.org,
        linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: [PATCH 1/2] cxl/hdm: Fix && vs || bug

If "info" is NULL then this code will crash.  || was intended instead of
&&.

Fixes: 8ce520fdea24 ("cxl/hdm: Use stored Component Register mappings to map HDM decoder capability")
Signed-off-by: Dan Carpenter <dan.carpenter@...aro.org>
---
 drivers/cxl/core/hdm.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cxl/core/hdm.c b/drivers/cxl/core/hdm.c
index bc8ad4a8afca..af17da8230d5 100644
--- a/drivers/cxl/core/hdm.c
+++ b/drivers/cxl/core/hdm.c
@@ -146,7 +146,7 @@ struct cxl_hdm *devm_cxl_setup_hdm(struct cxl_port *port,
 
 	/* Memory devices can configure device HDM using DVSEC range regs. */
 	if (reg_map->resource == CXL_RESOURCE_NONE) {
-		if (!info && !info->mem_enabled) {
+		if (!info || !info->mem_enabled) {
 			dev_err(dev, "No component registers mapped\n");
 			return ERR_PTR(-ENXIO);
 		}
-- 
2.42.0