linux-kernel - [PATCH 05/12] spmi: pmic-arb: Replace three IS_ERR() calls by null pointer checks in spmi_pmic_arb

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Message-ID: <20240507210809.3479953-6-sboyd@kernel.org>
Date: Tue,  7 May 2024 14:07:42 -0700
From: Stephen Boyd <sboyd@...nel.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Markus Elfring <elfring@...rs.sourceforge.net>,
	linux-kernel@...r.kernel.org,
	patches@...ts.linux.dev,
	Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
	David Collins <quic_collinsd@...cinc.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Subject: [PATCH 05/12] spmi: pmic-arb: Replace three IS_ERR() calls by null pointer checks in spmi_pmic_arb_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>

The devm_ioremap() function does not return error pointers.
It returns NULL on error.
This issue was detected once more also by using the Coccinelle software.

Update three checks (and corresponding error codes) for failed
function calls accordingly.

Fixes: ffdfbafdc4f4 ("spmi: Use devm_spmi_controller_alloc()")
Fixes: 231601cd22bd ("spmi: pmic-arb: Add support for PMIC v7")
Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
Link: https://lore.kernel.org/r/82a0768e-95b0-4091-bdd1-14c3e893726b@web.de
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Reviewed-by: David Collins <quic_collinsd@...cinc.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
---
 drivers/spmi/spmi-pmic-arb.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/drivers/spmi/spmi-pmic-arb.c b/drivers/spmi/spmi-pmic-arb.c
index 9ed1180fe31f..937c15324513 100644
--- a/drivers/spmi/spmi-pmic-arb.c
+++ b/drivers/spmi/spmi-pmic-arb.c
@@ -1462,8 +1462,8 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
 	 */
 	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "core");
 	core = devm_ioremap(&ctrl->dev, res->start, resource_size(res));
-	if (IS_ERR(core))
-		return PTR_ERR(core);
+	if (!core)
+		return -ENOMEM;
 
 	pmic_arb->core_size = resource_size(res);
 
@@ -1495,15 +1495,15 @@ static int spmi_pmic_arb_probe(struct platform_device *pdev)
 						   "obsrvr");
 		pmic_arb->rd_base = devm_ioremap(&ctrl->dev, res->start,
 						 resource_size(res));
-		if (IS_ERR(pmic_arb->rd_base))
-			return PTR_ERR(pmic_arb->rd_base);
+		if (!pmic_arb->rd_base)
+			return -ENOMEM;
 
 		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
 						   "chnls");
 		pmic_arb->wr_base = devm_ioremap(&ctrl->dev, res->start,
 						 resource_size(res));
-		if (IS_ERR(pmic_arb->wr_base))
-			return PTR_ERR(pmic_arb->wr_base);
+		if (!pmic_arb->wr_base)
+			return -ENOMEM;
 	}
 
 	pmic_arb->max_periphs = PMIC_ARB_MAX_PERIPHS;
-- 
https://git.kernel.org/pub/scm/linux/kernel/git/clk/linux.git/
https://git.kernel.org/pub/scm/linux/kernel/git/sboyd/spmi.git