From: Dinh Nguyen <dinguyen@kernel.org>
To: gregkh@linuxfoundation.org
Cc: dinguyen@kernel.org, linux-kernel@vger.kernel.org,
Wang Ming <machel@vivo.com>,
stable@vger.kernel.org
Subject: [PATCH] firmware: Fix an NULL vs IS_ERR() bug in probe
Date: Thu, 27 Jul 2023 14:37:50 -0500 [thread overview]
Message-ID: <20230727193750.983795-1-dinguyen@kernel.org> (raw)
From: Wang Ming <machel@vivo.com>
The devm_memremap() function returns error pointers.
It never returns NULL. Fix the check.
Fixes: 7ca5ce896524 ("firmware: add Intel Stratix10 service layer driver")
Cc: stable@vger.kernel.org
Signed-off-by: Wang Ming <machel@vivo.com>
Signed-off-by: Dinh Nguyen <dinguyen@kernel.org>
---
drivers/firmware/stratix10-svc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/firmware/stratix10-svc.c b/drivers/firmware/stratix10-svc.c
index 260695a8a9e6..c693da60e9a9 100644
--- a/drivers/firmware/stratix10-svc.c
+++ b/drivers/firmware/stratix10-svc.c
@@ -774,7 +774,7 @@ svc_create_memory_pool(struct platform_device *pdev,
paddr = begin;
size = end - begin;
va = devm_memremap(dev, paddr, size, MEMREMAP_WC);
- if (!va) {
+ if (IS_ERR(va)) {
dev_err(dev, "fail to remap shared memory\n");
return ERR_PTR(-EINVAL);
}
--
2.25.1
reply other threads:[~2023-07-27 19:38 UTC|newest]
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