linux-kernel - [PATCH 5.10 079/131] usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap

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Date:   Mon, 14 Jun 2021 12:27:20 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH 5.10 079/131] usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap_resource()

From: Andy Shevchenko <andy.shevchenko@...il.com>

commit 843fabdd7623271330af07f1b7fbd7fabe33c8de upstream.

devm_ioremap_resource() can return an error, add missed check for it.

Fixes: 43d596e32276 ("usb: typec: intel_pmc_mux: Check the port status before connect")
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
Cc: stable <stable@...r.kernel.org>
Link: https://lore.kernel.org/r/20210607205007.71458-2-andy.shevchenko@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 drivers/usb/typec/mux/intel_pmc_mux.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/usb/typec/mux/intel_pmc_mux.c
+++ b/drivers/usb/typec/mux/intel_pmc_mux.c
@@ -573,6 +573,11 @@ static int pmc_usb_probe_iom(struct pmc_
 		return -ENOMEM;
 	}
 
+	if (IS_ERR(pmc->iom_base)) {
+		put_device(&adev->dev);
+		return PTR_ERR(pmc->iom_base);
+	}
+
 	pmc->iom_adev = adev;
 
 	return 0;