linux-kernel - [PATCH] spi: remove return value check of debugfs_create

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Message-Id: <20230423061155.2540-1-ysxu@hust.edu.cn>
Date:   Sun, 23 Apr 2023 14:11:54 +0800
From:   Yingsha Xu <ysxu@...t.edu.cn>
To:     Serge Semin <fancer.lancer@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     hust-os-kernel-patches@...glegroups.com,
        Yingsha Xu <ysxu@...t.edu.cn>, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] spi: remove return value check of debugfs_create_dir()

Smatch complains that:
dw_spi_debugfs_init() warn: 'dws->debugfs' is an error pointer
 or valid

Debugfs checks are generally not supposed to be checked for errors
and it is not necessary here.

Just delete the dead code.

Signed-off-by: Yingsha Xu <ysxu@...t.edu.cn>
Reviewed-by: Dongliang Mu <dzm91@...t.edu.cn>
---
 drivers/spi/spi-dw-core.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c
index c3bfb6c84cab..64eb6dcdaac3 100644
--- a/drivers/spi/spi-dw-core.c
+++ b/drivers/spi/spi-dw-core.c
@@ -63,8 +63,6 @@ static int dw_spi_debugfs_init(struct dw_spi *dws)
 
 	snprintf(name, 32, "dw_spi%d", dws->master->bus_num);
 	dws->debugfs = debugfs_create_dir(name, NULL);
-	if (!dws->debugfs)
-		return -ENOMEM;
 
 	dws->regset.regs = dw_spi_dbgfs_regs;
 	dws->regset.nregs = ARRAY_SIZE(dw_spi_dbgfs_regs);
-- 
2.17.1